Types of AME Licence Categories in India: Scope, Eligibility & Responsibilities

Aircraft Maintenance Engineering (AME) is one of the most specialized fields in the aviation industry. AME Engineers are responsible to ensure the maintenance, repair and check the airworthiness of aircraft before flight. AME license is divided into Three broad categories to fulfill the diverse technical and operational requirements and every category reflects expertise and responsibility to maintain the Safety and security of an aircraft. (1)

Category A engineers in AME repair the basic line maintenance and minor repairs. Category B works on detailed mechanical and avionics systems of an aircraft. While category C are responsible to release the aircrafts after major maintenance checks. (1)

Overview of AME Categories

In India Aircraft Maintenance Engineering (AME) is regulated by the Directorate General of Civil Aviation (DGCA) and follows similar international standards as EASA Part-66. The AME license system by DGCA ensures that maintenance personnel or engineers should be trained and certified as per aircraft type and system specialization. Its main aim is to ensure aviation safety and aircraft reliability. (1) (2)

Here is a table given below which gives a short and concise understanding of AME Categories in aviation industry:

This AME Categories classification defines every level of aircraft maintenance step by step to ensure the safety and efficiency of the aviation industry. (1) (2)

AME Category A – Line Maintenance

Category A AME professionals are authorized to perform minor line maintenance tasks and rectify simple defects. Their primary goal is to ensure that aircraft are ready and safe for flight operations. (1) (2)

AME Cat-A Sub-Categories

A1: Turbine Engine Aircraft: This category is related to those engineers who want to work on turbine engines (jet engines) of aircrafts. These engineers are responsible for maintaining the line maintenance, minor repairs and engine performance checks. (1) (2)

A2: Piston Engine Aircraft: This category is related to those engineers who want to work on maintenance and inspection of the Piston engine of aircraft . These engineers are responsible for replacement of engine components and troubleshooting. (1) (2)

A3: Turbine Engine Helicopter: A3 category engineers work on turbine engine helicopters. Professionals ensure daily maintenance, system checks and minor repairs of helicopter safe flying condition. (1) (2)

A4: Piston Engine Helicopter: This category is related to maintenance of piston engine helicopters. Engineers do servicing of mechanical parts, engine systems and essential controls to ensure the flight safety. (1) (2)

Responsibilities of AME Category A

AME Category A professionals are responsible for carrying out basic line maintenance, minor repairs, component replacements, inspections, and defect rectification to ensure aircraft remain safe and ready for flight operations.

• Conduct Pre-flight and Post-flight Inspections: AME Category A engineers check the aircraft before flight and identify all safety issues or technical faults in the aircraft. (1)

• Replace Components and Perform Simple Repairs: These engineers check and replace the small components of aircraft like filters, sensors and other parts which ensures that the aircraft is operational. (1)

• Troubleshoot Minor Issues During Aircraft Turnaround: If there is any issue at the time of turnaround of aircraft time, Category engineers are responsible to troubleshoot and rectify the issue to prevent flight delay. (1)

Career Opportunities for AME Category A

• Domestic and International Airlines: AME Category A professionals can work with airlines, performing line maintenance, inspections, component replacements, and minor defect rectification on aircraft.
  They help ensure aircraft remain operational and safe for scheduled flight operations.
• MRO (Maintenance, Repair & Overhaul) Organizations: Professionals can work in MRO organizations involved in aircraft maintenance, servicing, inspections, and repair activities.
  They gain practical experience by supporting routine maintenance and resolving technical issues.
• Ground Handling and Aircraft Service Stations: Category A professionals can work at aircraft service stations supporting airlines during aircraft turnaround and ground operations.
  Their work may include basic inspections, servicing, component replacement, and minor maintenance tasks. (3)

AME Category B – Mechanical and Avionics Maintenance

The AME Category B license is divided into two sub categories- B1 (Mechanical) and B2 (Avionics). Engineers in this category are responsible for detailed inspections, system testing, troubleshooting and certification to ensure the airworthiness and safety of aircraft. (1) (2)

AME B1 – Mechanical Stream

Category B1 engineers work on mechanical systems of aircrafts like engines, airframes, landing gear, fuel, hydraulic and pneumatic systems. These engineers ensure that every mechanical component of the aircraft is working properly and there is no mechanical defect, if any, correct and rectify it on time. (1) (3)

AME B1 Sub Categories:

• B1.1: This category is related to the turbine engine powered aircrafts. (1) (2)

• B1.2: This category is related to the Piston Engine Aircraft. (1) (2)

• B1.3: This category is related to the Turbine Engine Helicopter. (1) (2)

• B1.4: This category is related to the Piston Engine Helicopter. (1) (2)

AME Category B1 Responsibilities

AME Category B1 Responsibilities

• Perform scheduled maintenance and repairs: To work on regular maintenance of aircraft mechanical systems to optimize the performance of aircraft. (1)
• Inspect engines and structural components: To work on inspection of engine, landing gear, airframe and other structural parts to detect the defect and rectify it on time. (1)
• Certify mechanical systems for flight readiness: To certify the aircraft after maintenance and testing for safe flight operations. (1) (3)
• Troubleshoot Mechanical Defects: To identify and rectify faults in aircraft engines, hydraulic, pneumatic, fuel, landing gear and other mechanical systems. (1)
• Inspect Aircraft Systems: To examine aircraft mechanical systems and components during scheduled and unscheduled maintenance to identify wear, damage or other defects. (1)
• Perform Component Replacement: To remove and replace defective mechanical components and ensure that the replacement is carried out according to approved maintenance procedures. (1)
• Conduct Functional Tests: To perform necessary operational and functional checks after maintenance to confirm that aircraft systems are working correctly and safely. (1)
• Maintain Technical Records: To accurately record maintenance activities, inspections, repairs and component replacements in accordance with applicable maintenance procedures and documentation requirements. (1)

AME B2 – Avionics Stream

Category B2 engineers specialize in the electronic systems of aircraft, ensuring proper functioning of communication, navigation, and instrumentation equipment. (1) (2)

AME Category B2 Responsibilities

• To Maintain and troubleshoot radar, autopilot and navigation systems for smooth flight operations.

• To Conduct system tests and calibration to ensure accurate performance of all electronic components.

• To Certify avionics systems after maintenance ensuring compliance with DGCA safety standards and airworthiness requirements. (1) (2)

Career Opportunities After AME B2 Category

After completing AME B2 training and meeting applicable licensing requirements, professionals can explore opportunities in airlines, MROs, avionics, manufacturing, research, and other aviation organisations. (3)

• Airlines and Corporate Aviation Firms: AME B2 professionals can work on aircraft avionics systems, including communication, navigation, instrumentation and electronic systems, ensuring their proper functioning and maintenance.
• Avionics and Component Manufacturers: Professionals can work with manufacturers involved in producing avionics equipment and aircraft components, supporting testing, inspection, maintenance and technical activities.
• Government and Private Research Centers: AME B2 professionals may work in research and technical organisations involved in aviation electronics, aircraft systems, testing and development of new aviation technologies.
• Airlines: Professionals can work with airlines in avionics maintenance, troubleshooting, inspections and testing of aircraft electronic systems to support safe flight operations.
• Maintenance, Repair and Overhauls (MRO) Industries: MRO organisations offer opportunities to work on inspection, troubleshooting, repair and maintenance of aircraft avionics systems and components.
• Aircraft Manufacturing Companies: AME B2 professionals can work with aircraft manufacturers in areas involving avionics installation, inspection, testing and maintenance support for aircraft electronic systems.

AME Category C – Base Maintenance Engineer

Category C engineers hold the highest level of certification in the AME hierarchy. They are responsible for supervising B1 and B2 engineers during base maintenance and certifying the aircraft for service after major inspections or overhauls. (1) (2)

AME Category C Responsibilities

• To Oversee heavy maintenance tasks and system testing during major aircraft inspections and repair.

• To Sign off aircraft after base checks, confirming that all maintenance activities meet regulatory and safety standards.

• To ensure compliance with DGCA and international safety regulations, maintaining the overall airworthiness and reliability of the aircraft before returning to service. (1) (2)

Career Opportunities After AME Category C

• MRO Organizations and Aircraft Manufacturing Units: Category C professionals can work in MRO organizations and aircraft manufacturing units, where they may oversee major maintenance activities and coordinate the completion of base maintenance checks.
• Regulatory Authorities and Defense Sectors: Professionals may explore technical and maintenance-related opportunities in regulatory or defense organisations, depending on their qualifications, experience and applicable recruitment requirements.
• Senior Engineering and Management Positions in Aviation: With relevant experience and licensing, Category C professionals can progress into senior technical, supervisory and management roles involving aircraft maintenance operations and maintenance planning.
• Aircraft Operation Organizations: Professionals can work with aircraft operators in roles related to maintenance management, technical coordination and oversight of aircraft maintenance activities.
• Flying Clubs: Flying clubs operating aircraft for training and other activities may offer opportunities in aircraft maintenance supervision, inspection and technical support.
• Aviation Training Centres: Experienced Category C professionals may contribute to aviation training organisations through technical instruction, practical training and maintenance-related guidance.
• Civil Defence Forces: Professionals may find opportunities in organisations operating aircraft for civil protection and related activities, subject to the specific technical qualifications and recruitment requirements. (3)

AME Eligibility & Training Requirements

• Educational Qualification: 10+2 with Physics, Chemistry, and Mathematics (PCM) or any 3 year engineering diploma in any stream or equivalent.

• Course Duration: 2 to 3 years (depending on category and institute)

• Regulatory Body: DGCA (Directorate General of Civil Aviation), Government of India

• Training Includes: Theoretical classes on aircraft systems and safety procedures

  • Practical training on live aircraft and simulators

  • Internship or On-the-Job Training (OJT) at DGCA-approved MROs or airlines (4)

Average Salary of AME Professionals

Aircraft Maintenance Engineering (AME) is a specialised aviation field, which enables professionals to work on maintenance, inspection, repair and safety related technical activities. Salary figures are indicative monthly ranges, not guaranteed earnings. Actual salary of an AME Professionals depends upon experience, licence status, technical skills, employer and job role. The table given below is showing.

Note: These are indicative ranges for website content, not verified category-specific averages. The latest available salary data shows substantial variation across roles and employers.

Aircraft Maintenance Engineering (AME) is a highly respected and globally recognized career that ensures the safety and efficiency of the aviation industry. Each AME category — A, B, and C plays a critical role, from basic maintenance to complete aircraft certification. With growing demand for air travel and advancements in aviation technology, the need for licensed AME professionals continues to rise. A career in AME not only offers technical expertise but also provides exciting opportunities and global exposure in one of the most dynamic industries in the world.

References

(1) DGCA / CAR-66 – Aircraft Maintenance Engineer Licensing Framework

(2) EASA – Part-66 Licence Categories

(3) AME CET – Aircraft Maintenance Engineering Course Details

(4) DGCA – CAR-147 (Basic) Aircraft Maintenance Training Organisation Requirements