Aircraft Mechanics and Service Technicians ·  Diagnose, adjust, repair, or overhaul aircraft engines and assemblies, such as hydraulic and pneumatic systems. Includes helicopter and aircraft engine specialists. Excludes "Avionics Technician" (49-2091).



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Occupational Tasks ·  Read and interpret maintenance manuals, service bulletins, and other specifications to determine the feasibility and method of repairing or replacing malfunctioning or damaged components.
· Inspect completed work to certify that maintenance meets standards and that aircraft are ready for operation.
· Maintain repair logs, documenting all preventive and corrective aircraft maintenance.
· Conduct routine and special inspections as required by regulations.
· Examine and inspect aircraft components, including landing gear, hydraulic systems, and de-icers to locate cracks, breaks, leaks, or other problem.
· Inspect airframes for wear or other defects.
· Maintain, repair, and rebuild aircraft structures, functional components, and parts such as wings and fuselage, rigging, hydraulic units, oxygen systems, fuel systems, electrical systems, gaskets, and seals.
· Measure the tension of control cables.
· Replace or repair worn, defective, or damaged components, using hand tools, gauges, and testing equipment.
· Measure parts for wear, using precision instruments.
· Assemble and install electrical, plumbing, mechanical, hydraulic, and structural components and accessories, using hand tools and power tools.
· Test operation of engines and other systems, using test equipment such as ignition analyzers, compression checkers, distributor timers, and ammeters.
· Obtain fuel and oil samples, and check them for contamination.
· Reassemble engines following repair or inspection, and re-install engines in aircraft.
· Read and interpret pilots' descriptions of problems in order to diagnose causes.
· Modify aircraft structures, space vehicles, systems, or components, following drawings, schematics, charts, engineering orders, and technical publications.
· Install and align repaired or replacement parts for subsequent riveting or welding, using clamps and wrenches.
· Locate and mark dimensions and reference lines on defective or replacement parts, using templates, scribes, compasses, and steel rules.
· Clean, strip, prime, and sand structural surfaces and materials to prepare them for bonding.
· Service and maintain aircraft and related apparatus by performing activities such as flushing crankcases, cleaning screens, and lubricating moving parts.
· Examine engines through specially designed openings while working from ladders or scaffolds, or use hoists or lifts to remove the entire engine from an aircraft.
· Remove or install aircraft engines, using hoists or forklift trucks.
· Inventory and requisition or order supplies, parts, materials, and equipment.
· Fabricate defective sections or parts, using metal fabricating machines, saws, brakes, shears, and grinders.
· Remove or cut out defective parts, or drill holes in order to gain access to internal defects or damage, using drills and punches.
· Clean, refuel, and change oil in line service aircraft.
· Communicate with other workers to coordinate fitting and alignment of heavy parts, or to facilitate processing of repair parts.
· Trim and shape replacement body sections to specified sizes and fits, and secure sections in place, using adhesives, hand tools, and power tools.
· Clean engines, sediment bulk and screens, and carburetors, adjusting carburetor float levels.
· Prepare and paint aircraft surfaces.
· Spread plastic film over areas to be repaired in order to prevent damage to surrounding areas.


Educational Requirements: ·  Postsecondary vocational training


Occupational Skill Set
Skill Relevance
·  Repairing 81%
·  Reading Comprehension 81%
·  Troubleshooting 75%
·  Equipment Maintenance 74%
·  Equipment Selection 70%
·  Complex Problem Solving 70%
·  Writing 70%
·  Critical Thinking 69%
·  Active Listening 69%
·  Quality Control Analysis 68%