Unification of Training Programs for Aviation Professionals as a Flight Safety Criterion

The research relevance is predefined by the air travel number growth. Accordingly, the relevance of this issue is increasing, especially concerning air travel safety. Also, due to the increasing demand for international flights, it becomes essential to harmonize the standards and methodology of training aviation personnel. The research aims to consider the parameters of flight safety and the impact of the unification of training programs for aviation personnel. The conclusion that unification can significantly affect safety was made with the help of scientific and special methods, including analysis, synthesis, concretization, and generalization. An analysis of existing unification methods was conducted. The multi-crew pilot training program proved to be one of the most advanced compared to standard flight crew training programs. The method was determined to be a specialized training program tailored to the needs of the aviation industry and focused on training pilots for multi-crew and jet operations. The program is more challenging, intensive and dynamic, and includes a significant amount of simulator training. Traditional flight training programs, such as Private Pilot Licenses (PPL), Commercial Pilot Licenses (CPL), instrument qualification, and multi-engine rating, have a broader scope and provide pilots with more career opportunities. Simulator training has been identified as a critical component of many flight training programs and plays a vital role in flight safety. The study may be of interest to a range of readers concerned with the issue of standardizing aviation training and improving safety in aviation, including researchers, faculty, and students of higher education institutions in the aviation field.


INTRODUCTION
Aviation is an essential sphere as it plays an important role in global transportation and trade.It connects people, goods, and services around the world and has a significant impact on the global economy.Aviation is just as important to Kazakhstan as it is to the world.It plays a vital role in the economic growth and development of the country, facilitating trade, tourism, and investment.Kazakhstan is strategically located at the crossroads of Europe and Asia, and has several major airports that serve as hubs for regional and international flights.Among other things, small aviation plays a significant role by providing air transport services to remote rural areas, which helps accelerate local economic development, improve access to health care and education, and support the country's overall infrastructure (Beljatynskij et al. 2010).
• Navigation and communication -This criterion ensures that the aircraft can navigate and communicate effectively to maintain a safe distance from other aircraft and avoid potential hazards (Balbayev et al. 2014).
• Weather -This criterion ensures that the aircraft can operate safely in a variety of weather conditions, including thunderstorms, icing, and turbulence.
• Emergency procedures -This criterion ensures that the aircraft is equipped with the necessary safety equipment and procedures to deal with emergencies such as fires, engine failures, and hijackings (Berestovoi et al. 2020).
• Human factors -This criterion considers the role of human behaviour and actions in ensuring flight safety.This includes training and procedures to minimize the risks associated with human error, such as fatigue and stress.
• A safety management system (SMS) -A proactive approach to safety aimed at identifying and reducing potential hazards before they lead to accidents or incidents.SMS is a systematic approach to safety management, including the necessary organizational structure, responsibilities, policies0 and procedures (Avdieieva et al. 2020;Krayushkina et al. 2016).
• Risk management -This criterion is a systematic process of identifying, assessing, and reducing the risks associated with flight operations.These are just a few examples of the key criteria that are used to ensure flight safety.The aviation industry is constantly evolving, and new technologies and procedures are being developed to improve flight safety.The research aims to study the need for the unification of training programs for aviation specialists and their impact on flight safety, to analyse and study existing methods and their advantages and disadvantages.

METHODOLOGY
This research was based on the qualitative, reliable combination of proven theoretical methods (analysis, synthesis, concretization, generalization, modelling), and empirical methods (study of research experimental works of foreign and Kazakh scientists and their experience in this or a similar area with the application of a similar goal of methods and studying them by experienced specialists).
The research conducted involved a systematic analysis and synthesis of existing methods for unifying aviation specialist training programs, with a strong emphasis on flight safety.This comprehensive study began with an initial analysis of various training program approaches, followed by the synthesis of this information to understand the global landscape of aviation training.
The study then concretized its focus by delving into the specific criteria influencing flight safety, exploring their importance and interplay.This was followed by a generalization of findings, highlighting the potential benefits of standardizing aviation training programs worldwide, for enhancing civil and small aviation flight safety.To achieve these goals, the research employed modelling methods to create frameworks for standardization.It conducted a rigorous comparative analysis of materials from diverse sources, including detailed descriptions, theoretical knowledge, practical experiences, and recommendations from international organizations and academics.The study also prominently featured perspectives from foreign experts in countries like South Korea, Germany, and the United States, further enriching the analysis.Key issues in the aviation sector were outlined, and theoretical assumptions about future developments in aviation training programs were made based on factual insights.
The research utilised a basic theoretical basis, on the analysis of which the basis for further conclusions is built.Various reliable sources of information were searched and analysed.Many information resources dedicated to civil, military, and small aircraft, the development and necessity of flights, and their impact on the economy and living standards in Kazakhstan, South Korea, Germany and other countries were reviewed and filtered.Also, literature was collected on the unification of training programs for aviation personnel, standard training programs for flight personnel, flight practice, simulator practice, flight safety, the use of special simulators for pilot training, and simulators with 3 degrees of freedom.The collected data were studied and systematized for a simplified, quick, and qualitative understanding of the information.
Training of flight personnel in different countries, flight practices, simulator practices, and their impact on flight safety were studied.The differences between civil aviation and small aviation training, levels of training in regions with large resources and opportunities, from regions where resources for training are limited, as well as general differences between training programs, their methods, and requirements depending on countries and regions were considered.The conclusions obtained from the research were analysed, specified, and verified.Then, the materials were finalized and theoretical and practical conclusions were clarified, generalized, verified, and systematized.

General characteristics and global experience of professional training programs in aviation
The purpose of unifying the aviation training program is to ensure that all aviation personnel have the same level of knowledge and skills.This is especially important in the case of emergency procedures, since all personnel must be familiar with the same procedures to respond effectively to an emergency.It also facilitates the movement of the staff between different companies and agencies because they will already have the necessary qualifications.Unification of flight training programs for aviation personnel can have a major impact on flight safety by ensuring that pilots and other aviation personnel are trained to the same high standards and have consistent levels of knowledge and skills, but it is important to balance standardization and innovation to ensure high levels of safety in airspace, as well as the ability to adapt to changing conditions and technologies (Shynkariuk 2022;Wetmore et al. 2008).Figure 1 shows the importance of balance.First, the standardization of flight training programs affects such parameters: • Training consistency -Standardized training programs ensure that pilots and other aviation personnel are trained to the same standards and have a consistent level of knowledge and skills, regardless of where they are trained.This can help reduce the risks associated with human error and ensure that all pilots and aviation personnel are well prepared for the demands of their jobs.
• Efficiency gains -The training programs under consideration can be more time and cost-effective because they can be designed to be more streamlined and focused on the most important aspects of flight safety.
• Improving safety culture -Programs promote safety culture in the aviation industry by making safety a primary focus of training and encouraging all aviation personnel to play an active role in identifying and mitigating risks.
• Improved communication -Standardized-training programs can improve communication between different aviation personnel because they all learn the same language and use the same terminology.This can help reduce the risk of miscommunication and improve communication during flights.
• High classification rating -Standardized training programs can also facilitate easier recognition of pilots' and other aviation personnel's qualifications, making it easier for them to transition between different airlines or countries.This can help improve the mobility of pilots and other aviation personnel and improve the overall efficiency and safety of the aviation industry.
• Mutual recognition -Through standardized training programs, regulators can recognize the training and qualifications of pilots and other aviation personnel from other countries, making it easier for them to work in different countries.
• Harmonization of rules -With such training programs, regulators can harmonize rules across countries, which can help reduce the administrative burden on airlines and other aviation organizations and improve overall flight safety.
To achieve harmonization, a set of uniform standards and guidelines for aviation personnel training should be established.
These standards and guidelines should be developed by a group of experts in the field and should be regularly reviewed and updated as necessary.Once approved, these standards and guidelines should be adopted by all aircrew training institutions and companies.The MPL allows airlines to train people to operate more than one type of aircraft, focusing on common skills and procedures for different types of aircraft.This can lead to more effective pilot training and cost savings for airlines.Among the benefits of this method is the fact that MPL allows pilots to be trained and certified on multiple types of aircraft, which can lead to more effective pilot training and cost savings for airlines.This approach also addresses nontechnical skills such as leadership, communication, and decision-making that are necessary for multi-crew operations (Lee et al. 2021).One disadvantage of MPL, however, is that it can require significant investment in initial training and infrastructure, including aircraft and simulators.In addition, it may not be suitable for all types of operators, e.g., those with only one type of aircraft fleet (Schroeder and Harms 2007).
In order to better understand the characteristics of the MPL, the authors decided to compare it with two other pilot licenses (Table 1).The ATQP program is designed to enhance the safety and knowledge of airline pilots through advanced training and testing beyond the standard requirements for the commercial pilot certificate.One of the main advantages of the ATQP program is that it provides pilots with a higher level of training and knowledge than is required for a commercial pilot certificate.This includes training in areas such as flight systems, performance, and emergency procedures that can improve their ability to handle difficult situations and make better cockpit decisions.
Another benefit of the ATQP program is that it can help pilots advance their careers, allowing them to apply for higher-paying pilot positions with airlines.An ATP certificate is required for most airline pilot jobs, and the training and testing required by the ATQP program can help pilots meet those requirements.One major disadvantage of the ATQP program is that it can be quite expensive.Pilots will have to pay for the advanced training and testing required by the program, which can be a significant financial burden.In addition, the program can be time-consuming, requiring pilots to take time off from their normal duties to complete training and testing (Guerrero 2022).
Joint Aviation Authorities -Flight Crew Licensing (JAR-FCL 2006) is a set of rules established by the European Union (EU) in 2003 to standardize the training and licensing of pilots and air traffic controllers throughout the EU.The rules include minimum flight hours, training programs, and evaluation standards for pilots and air traffic controllers.This approach ensures that pilots and air traffic controllers in the EU have the necessary knowledge, skills, and experience to work safely and effectively.Advantages of JAR-FCL include its ability to standardize pilot training across Europe, ensuring that all pilots adhere to consistent standards and requirements, encompassing various facets of training, such as medical certification, practical skills, and theoretical knowledge.This standardization ultimately contributes to enhanced safety measures by upholding rigorous training standards.However, it is not without drawbacks, as JAR-FCL's intricate regulations may be challenging to comprehend, and the associated training expenses can be substantial.Additionally, some argue that these regulations might lack the flexibility needed to accommodate unique individual circumstances, potentially posing difficulties aspiring pilots (JAR 2006).
The ICAO Standards and Recommended Practices (SARPS) are a set of international standards and recommended practices established by ICAO in 1996 for various aspects of civil aviation, including pilot training and licensing.SARPS provide a framework for countries to develop their rules and standards based on ICAO recommendations.Advantages of ICAO SARPs include global aviation safety, standardized air navigation facilities, and orderly air transport development.Disadvantages involve operator awareness of differences with state regulations and potential challenges for flight crews in regions with non-ICAO procedures.
Although it provides a framework for countries to develop their own rules and standards, even these are difficult for countries with limited resources and small airlines, and they can be difficult to apply to new and modern technology in aviation, as new items are developed slowly (Ng et al. 2021).Despite this, these standards are used in more than 190 countries, and their use contributes to the development of international trade and tourism (ICAO 2019).
Computer based training (CBT) is a method developed in 1994 that uses computer-based training methods, including simulations, interactive modules, and multimedia presentations to teach various topics such as flight systems, flight procedures, and accident scenarios.This method allows for more adaptive training and can be used for pilot retraining and testing.Among the main advantages over other methods are that CBT provides more flexible and efficient training, allows students to be trained regardless of their location, and allows content to be updated at any time.It is a cost-effective and efficient method that can be used in addition to traditional classroom instruction (Kjulavkovska et al. 2021).However, one disadvantage of CBT is that it may not provide the same level of hands-on experience as traditional methods, and the effectiveness of learning may depend on the quality of the software and simulation used (ILO 2020).
The customer relationship management (CRM) method was developed in 1988 and is aimed at teaching pilots and other flight crew members how to work effectively as a team and how to manage and use all available resources, including other crew members, the aircraft, and the cockpit.This approach aims to reduce human error, improve communication and teamwork in the cockpit, and improve overall flight safety.However, one disadvantage of CRM is that it requires significant investment in initial training and infrastructure, including aircraft and simulators.In addition, it may not be suitable for all types of operators, for example, for those who have a fleet of only one type of aircraft (Mizrak and Mizrak 2020).
Evidence-based training (EBT) is a research and evidence-based training method created in 1987 (Han 2020).Although it is considered a more efficient and effective training method, the use of EBT in aviation has some drawbacks (Robeck 2014): • Cost -Implementing EBT can be expensive because it requires significant investment in research and development.It may also require the development of new training materials and equipment.
• Time requirements -EBT often takes longer to develop and implement than traditional training methods.This can lead to delays in training and certification.
• Complexity -EBT can be complex and requires a high level of expertise to develop and implement effectively.This can make implementation difficult for some training providers.
• Limited applicability -EBT may not be appropriate for all types of learning or all students.It may be more effective for certain types of instruction or certain groups of students.
• Lack of standardization -EBT is not yet widespread and standardized, which can lead to confusion and inconsistency in its implementation.
• Limited amount of research -The amount of research and evidence supporting the effectiveness of EBT in aviation, especially compared to traditional training methods, is limited.• Change unwillingness -Some people and organizations may resist changing their traditional training methods, which can make it difficult to implement EBT.The unification of flight training programs has significantly bolstered flight safety by instilling standardized procedures, enhancing pilot competency, and promoting a safety-oriented culture within the aviation industry.With consistent training across the board, pilots receive comprehensive instruction in essential skills and emergency protocols, resulting in reduced error rates and improved risk management.This standardization also facilitates better communication and teamwork among flight crews, ensuring efficient and safe operations.Moreover, the alignment of training with international regulations and best practices ensures that pilots are well prepared to navigate the complexities of modern aviation, contributing to safer skies and reducing the likelihood of accidents and incidents.

Kazakh aviation: history, accidents, and introduction of aviation training programs
Aviation in Kazakhstan dates back to the early 1920s when the first planes were introduced in the country.During the civil war, the planes were used for transportation operations and propaganda.After the war, most military planes were used in the national economy.The first testing civil flight dates back to April 1924, which was a flight from Tashkent to Alma-Ata and back.Regular air traffic by Kazakhstan's only airway began on July 11, 1924, using Yu-13 planes made of metal (SCAT Airlines 2023).Following the dissolution of the Soviet Union in 1991, the Kazakh division of the state-owned airline, Aeroflot, was transformed into Kazakhstan Airlines, with scheduled flights from its hub at Almaty International Airport being launched in 1992.Kazakhstan Airlines served as the national flag carrier of the country from its independence in 1991 until 1996.Following the disaster of the Charkhi Dadri mid-air collision, Kazakhstan Airlines ceased operations, and its role as flag carrier was transferred to Air Kazakhstan (ASN 1996;Makhanov 2020).
Aviation in the Republic of Kazakhstan has been growing rapidly in recent years.The Civil Aviation Committee of the Ministry of Transport of the Republic of Kazakhstan is responsible for the regulation of civil aviation in the country.Kazakhstan Aviation Industry (KAI) was established as a Maintenance and Repair Organisation (MRO) in 2012 to develop the domestic aviation industry and provide maintenance services to the Ministry of Defence.The Aviation Administration of Kazakhstan (AAK) is responsible for ensuring technical aviation control and supervision in the field of flight safety.There are currently 56 airline companies registered in Kazakhstan, but only five of them are involved in regular passenger transportation.Kazakhstan's effective implementation of ICAO safety standards is now 15% higher than the global average (UK Civil Aviation Authority 2021).
In May 2023, the first Kazakhstan Aviation Talks were held in Astana.The talks explored challenges facing the aviation fuel industry in the region, with a focus on energy transition for sustainability and transit development in Central Asia.The talks were a foundation for cooperation between countries, and the director general of AAK stated that the talks were the first of their kind.The talks also addressed the issue of jet fuel shortage and its high cost as one of the main constraints for developing the country's civil aviation (Sakenova 2023).The aviation industry is constantly working to improve safety measures and training programs to prevent future accidents.
Kazakhstan played a significant role in space exploration by hosting the Baikonur Cosmodrome, which has been successfully operated by Roscosmos State Corporation under the leasing agreement with the Russian Federation since 1994.Kazakh pilots have also had the privilege to explore the cosmos, with the first Kazakh person to go to space being Tokhtar Aubakirov, in 1991, followed by Talgat Mussabayev, in 1994, 1998, and 2001, and Aidyn Aimbetov, in 2015(The Astana Times 2021).
To better understand what errors and gaps are contained in pilot training programs, the authors analysed two of the largest aeroplane crashes in the history of Kazakhstan.On December 27, 2019, a Bek Air plane crashed shortly after take-off from Almaty International Airport, killing 12 people and injuring dozens more (Calder 2019).The cause of the crash was attributed to pilot error, specifically the pilot's failure to de-ice the plane's wings before take-off, which led to loss of control.This incident highlights a gap in the training programs for pilots in Kazakhstan, particularly in the area of safety procedures and protocols.Even though Kazakhstan was rated well above global standards for regulating operations and airworthiness in the most recent oversight check conducted by the ICAO, the crash suggests that there may be weaknesses in the training programs for pilots.Another incident that highlights gaps in the training programs for pilots in Kazakhstan is the 1996 mid-air collision involving a Kazakhstan Airlines jet and a Saudi Arabian Airlines plane (Government of India 1996).The collision occurred shortly after take-off from New Delhi, India, and resulted in the deaths of all 349 people on board both planes.While the cause of the collision was attributed to pilot error, investigators called for an analysis of the training program rather than retraining the pilots.This incident suggests that there may be a need for more comprehensive and effective training programs for pilots in Kazakhstan.The Kazakh aviation sector has grown significantly in recent years, with a focus on safety and regulatory compliance.Kazakhstan actively participates in international aviation collaborations and discussions, addressing challenges such as jet fuel shortages and sustainability.The country plays a role in space exploration and is investing in pilot training programs to enhance safety.Despite past incidents, Kazakhstan is committed to the growth and improvement of its aviation industry.

DISCUSSION
The MPL program is a type of flight training that is becoming increasingly popular among aspiring commercial pilots.It is considered one of the most advanced programs because it allows the model developer to formulate complicated optimization models in a clear way.Additionally, MPL is used in various fields such as aviation, gaming, and prosthetics, which shows its versatility and adaptability.MPL is designed to provide cadets with the specific skills and knowledge needed to function effectively as a co-pilot in a multi-crew environment.Compared to traditional flight training programs such as Private Pilot License (PPL) and Commercial Pilot License (CPL), MPL has several key differences: • The MPL is specifically designed to meet the needs of the aviation industry, with an emphasis on multi-crew and jet aircraft.
• MPL training is usually provided by an airline or training organization in partnership with an approved flight training organization.This allows cadets to receive training directly related to the type of aircraft they will be flying in their future careers.Likewise, MPL training includes a significant amount of simulator training that is used to replicate the complex procedures and systems used in today's jets.In addition, the program includes an integrated type of evaluation that allows cadets to complete their training and almost immediately begin flying as airline co-pilots.
Currently, MPL has several disadvantages.MPL is a more complex and demanding program of study than traditional programs.This can increase training costs for students and airlines.In addition, instructors who teach in an MPL program must have a higher level of qualifications, which can also affect costs.Another disadvantage of MPLs is the difficulty with regulation and licensing.Each country has its rules and standards for pilot training and licensing, and some countries may not accept MPL licenses.This can lead to additional difficulties for pilots who are licensed under the MPL and wish to work overseas.Despite these disadvantages, MPL offers many advantages to companies and students.Mostly, it provides a more effective and faster learning experience because it combines theoretical and practical training (EASA 2020).This allows students to start their careers as a pilot faster, which ultimately reduces training costs for airlines.In addition, MPL allows airlines to obtain more qualified pilots who will be better prepared to work on commercial aircraft (Kjulavkovska et al. 2021).MPL can also help airlines meet the increasing need for qualified pilots expected in the future, as stated by Carey et al. (2012)  • Full Flight Simulator (FFS) -These are the most advanced and realistic simulators designed to replicate the cockpit and systems of a particular aircraft type (Sadovoy et al. 2021;Wikander and Dahlstrom 2020).FFS are typically used for typical evaluation and retraining of commercial pilots (Lee 2020).
• Flight Training Devices (FTD) -These simulators are less complex than FFS and are usually used for early training or in addition to teaching specific procedures or manoeuvres (Pavliuk 2022;Tran et al. 2022).• Synthetic Training Devices (STD) -These simulators are used to train pilots in certain procedures, such as instrument approaches and emergency procedures (Kharlamov et al. 2015;Tran et al. 2022).
Among all flight simulators, it is possible to distinguish simulators with 3 degrees of freedom.They are widely used in aviation training, both for pilots and maintenance crews.They provide an economical and safe way to train pilots and other personnel in various scenarios, including emergencies and other challenging flight conditions.One of the main advantages of using a flight simulator with 3 degrees of freedom is that it provides a high degree of realism and immersion.Trainees can experience the same movements and sensations as in a real aircraft, allowing them to better understand how the aircraft behaves in different situations.
It is especially useful for pilot training because it allows them to develop the necessary skills and knowledge to operate the aircraft safely in a variety of conditions.
Another advantage of three-degree-of-freedom simulators is that they can be used to replicate a wide range of aircraft types stated that developing and conducting training for an MPL pilot license can be difficult and complex in many ways.There is no doubt that the initiative to introduce an MPL program was to improve pilot training, but only preliminary information is currently available to determine if this goal will be achieved.

CONCLUSION
It was concluded that several key criteria can be identified that are used to ensure flight safety.These include airworthiness, pilot qualifications, navigation and communication, weather, emergency procedures, human factors, SMS, and risk management.These criteria are regularly evaluated and updated to ensure that flight safety is maintained at the highest

Figure 1 .
Figure 1.Balance of standardization and innovation.
There are several current ways to standardize aviation training programs.One of them is the Multi-Crew Pilot License (MPL).This is a new type of license developed by ICAO for commercial pilots in 2006.MPL provides unification of pilot training and evaluation requirements, as well as increased safety in aviation.It provides uniform minimum training and assessment requirements for pilots, allowing airlines and educational institutions to provide a uniform quality standard for pilot training and education.
Kazakhstan has been investing in aviation pilot training programs to enhance the capabilities of its pilots.Air Astana, the national airline of Kazakhstan, recently commissioned a new Flight Training Centre to avoid the need to send pilots abroad for training.Epic Flight Academy has also designed a Kazakhstan Pilot Program to train pilots under Kazakhstan's Civil Aviation Committee with structured flight training (Epic Flight Academy 2023).In addition, Kazakhstan has been expanding its air cargo control through the UNODC-WCO Global Container Control Programme (UNODC 2019).The country has also been collaborating with international aviation training providers, such as CAE and Textron Aviation Defence, to enhance next-generation training and expand its business aviation training network (CAE 2023).
in their study of the problem of the severe pilot shortage.PPL training is the first step for novice pilots and focuses on the basics of flight, including take off, landing, navigation, and emergency procedures.PPL training typically includes a minimum of 40 flight hours and pilots are qualified to fly a single-engine aeroplane under visual flight rules.MPL, in other ways, is specifically tailored to the needs of the aviation industry and focuses on multi-crew operations and jets.Analysing a study by Adanov et al. (2020) of pilot training and recruitment in Europe, it can be concluded that compared to the PPL program, MPL training is more intensive and faster, with shorter total training time and a significant amount of simulator training.PPL training typically takes 40 to 60 hours of flight training and 20 to 40 hours of classroom training.Training costs can range from 15 thousand dollars to 30 thousand dollars, depending on the training location and aircraft type.Training for MPLs usually takes anywhere from 18 months to 2 years, depending on the airline and program.It can include both theoretical and practical training.Training costs can range from 100 thousand dollars to 250 thousand dollars, depending on the airline and program (Lee et al. 2021).In addition, MPL training often requires additional medical checks and medical consent, which can add additional costs (ICAO 2011).CPL training builds on the skills and knowledge gained during PPL training and focuses on advanced flight and navigation techniques, including instrument flight rules.CPL training typically includes a minimum of 250 hours of flight time, and pilots are authorized to fly single-engine or multi-engine aircraft for hire.The MPL, in other ways, is specifically tailored to the needs of the aviation industry and includes an integrated type of evaluation that allows cadets to complete their training and almost immediately begin flying as a co-pilot with an airline.The cost of training for CPL and MPL varies by country, air school, and scope of training.Typically, MPL training can be more expensive than CPL because it involves more intensive training and practice on simulators.CPL and MPL may also have different qualifications and medical clearance requirements.For example, CPL requires a Class 1 medical qualification, while MPL may have a Class 2 qualification requirement (Carey et al. 2012).It is important to note that CPL and MPL have different purposes and uses.The CPL is for people who want to become commercial pilots and fly as solo pilots, while the MPL is for people who want to become commercial pilots and fly as a team aboard two-cockpit aircraft.Airline Transport Pilot License (ATPL) programs are one of the highest levels of pilot licensing in aviation and are designed to train professional commercial pilots.Typically, an ATPL program consists of theoretical and practical training, which can take from 18 to 24 months, depending on the intensity of training and airline requirements.During the program, pilots receive a wide range of knowledge, including flight physics, meteorology, navigation, air traffic regulations, flight safety, flight techniques, human resources management, and many other topics.After completing the theoretical part of the training, pilots must go through the practical part, which includes training flights on single-engine and multi-engine aircraft.During the practical part of the training, pilots learn how to perform various manoeuvres, including take-offs and landings, low altitude flight, aviation navigation, emergency management, and more.Upon successful completion of the ATPL program, pilots receive an ATPL license, which allows them to work as aircraft captains for airlines.Typically, to obtain an ATPL license, pilots need to have a certain number of flight hours as pilots, which can be achieved by working for airlines as co-pilots.ATPL training is expensive, but pilots who complete the program can earn high salaries and have career prospects in the aviation industry (FlightGlobal 2008).There is also Instrument Rating (IR) training.It focuses on the skills and knowledge needed to fly in instrument weather conditions when visibility is poor and pilots must rely on instruments to navigate and control the aircraft.IR training typically includes a minimum of 50 hours of flight time and pilots are qualified to fly in IFR conditions.MPL, in other ways, is specifically adapted to the needs of the aviation industry and includes a significant amount of simulator training, which is used to replicate the complex procedures and systems used in modern jets, as follows fromHanáková et al. (2020) on the problem of pilot fatigue, helps to better prepare for the workload.Multi-Engine Rating (MER) training focuses on the skills and knowledge needed to fly multi-engine aircraft, which are usually more complex and require more advanced skills than single-engine aircraft.MER training typically involves at least 20 hours of flying time.MPL is specifically adapted to the needs of the aviation industry and focuses on multi-crew operations and jet aircraft, which in consequence through more competent education will increase safety, as stated byMendonca et al. (2019).Traditional flight training programs, such as PPL and CPL, offer more extensive training that allows pilots to fly different types of aircraft and gives them more flexibility in terms of career options.Simulator training is a key component of many flights training programs, including the MPL program.Simulator training allows pilots to practice and improve their skills in a safe and controlled environment without the risks and costs associated with flying a real aircraft.Several types of flight simulators are used in pilot training, including:

•
Basic Aviation Training Device (BATD) -These simulators are the simplest type of flight simulator and are used for basic flight training (Yusuf et al. 2019).
and models.This allows training on several types of aircraft, which is especially useful for airlines operating fleets of different models.An important aspect of flight simulators with 3 degrees of freedom is the use of sophisticated computer simulation and simulation to reproduce the physical and aerodynamic characteristics of the aircraft.This provides a high degree of accuracy and realism, which is essential for effective training.In addition, these simulators can be used for both initial and refresher training, which means that pilots and other personnel can continue to use them throughout their careers to maintain and improve their skills.Simulator training can include a wide range of exercises, such as normal and abnormal procedures, emergency scenarios, and flying in different weather conditions.Simulator training can also be used to teach specific skills, such as crew resource management and threat and error management(Bondarenko et al. 2013;Mageramov et al. 2014).Simulator training has several advantages over training on a real aircraft.It allows pilots to practice and improve their skills in a primarily safe and controlled environment without risk or cost.Simulator training also allows for repeated practice of certain procedures and scenarios, which is necessary to master complex skills and procedures.The MPL program is used by many airlines and flight training organizations around the world.The MPL program was first introduced by the European Aviation Safety Agency(EASA)  in 2006 and has since been adopted by several other aviation regulatory agencies(Wikander and Dahlstrom 2020).Countries that have adopted the MPL program include many EU countries, such as France, Germany, Spain, and Italy.Also, the Australian Civil Aviation Safety Authority (CASA), Canadian Transportation Agency (CTA), Civil Aviation Authority of Singapore (CAAS), Directorate General of Civil Aviation in India (DGCA), Civil Aviation Authority of China (CAAC), General of the Arab Civil Aviation Organization (GACAO) in the United Arab Emirates, and other countries have adopted MPL and have several training organizations on this program(Kim 2021).Wikander and Dahlstrom (2020)

Table 1 .
Comparison of flight pilot licenseIn other ways, the Alternative Training Qualification Programme (ATQP)(CAA 2013), a program designed to standardize Airline Transport Pilot (ATP) worldwide, was also developed in 2006.The program includes a set of minimum standards for pilot training and evaluation, as well as an ATP training program.ATQP uses the Airport Facility CADding (AFCAD) file format.The AFCAD files contain information on take-off and landing lanes, taxiways, parking areas, navigation lights, and other objects necessary for piloting in a virtual space.Its program provides pilots with the necessary knowledge and skills to fly for scheduled commercial airlines.The advantages of the ATP certificate program include its status as the highest level of pilot certification, preparation for a career in scheduled commercial airlines, a fixed-cost pricing structure, and valuable knowledge and experience opportunities.However, disadvantages include the costly and time-consuming 1,500-hour flight experience requirement, challenging written and practical exams, and federal prerequisites that may restrict eligibility.A visualization of the ATQP process is shown in Fig.2.
Source: Elaborated by the authors.Source: Elaborated by the authors based on Schroeder and Harms (2007).