in on-the-job training and related instruction.
Airframe and Powerplant Mechanic
USDOL
Work Process Content
On the Job Training
GENERAL TASKS
43
1.1K
- Calculate and measure capacitance and inductance;
- calculate and measure electrical power;
- measure voltage, current, resistance, and continuity;
- determine the relationship of voltage, current, and resistance in electrical circuits;
- read and interpret aircraft electrical circuit diagrams, including solid state devices and logic functions;
- inspect and service batteries.
- Use aircraft drawings, symbols, and system schematics;
- draw sketches of repairs and alterations;
- use blueprint information; use graphs and charts.
- Weigh aircraft;
- perform complete weightandbalance check and record data.
- Fabricate and install rigid and flexible fluid lines and fittings.
- Identify and select appropriate nondestructive testing methods;
- perform dye penetrant, eddy current, ultrasonic, and magnetic particle inspections;
- perform basic heat-treating processes;
- identify and select aircraft hardware and materials;
- inspect and check welds;
- perform precision measurements.
- Start, ground operate, move, service, and secure aircraft and identify typical ground operation hazards;
- identify and select fuels.
- Identify and select cleaning materials, inspect, identify, remove, and treat aircraft corrosion and perform aircraft cleaning.
- Extract roots and raise numbers to a given power;
- determine areas and volumes of various geometrical shapes;
- solve ratio, proportion, and percentage problems;
- perform algebraic operations involving addition, subtraction, multiplication, and division of positive and negative numbers.
- Write descriptions of work performed including aircraft discrepancies and corrective actions using typical aircraft maintenance records;
- complete required maintenance forms, records, and inspection reports.
- Use and understand the principles of simple machines;
- sound, fluid, and heat dynamics;
- basic aerodynamics;
- aircraft structures;
- and theory of flight.
- Demonstrate ability to read, comprehend, and apply information contained in FAA and manufacturer'’ aircraft maintenance specifications, data sheets, manuals, publications, and related Federal Aviation Regulations, Airworthiness Directives, and Advisory materials, read technical data.
- Exercise mechanic privileges within the limitations prescribed by FAR 65.
- Fuels, lubricants, or hydraulic fluids;
- flammable cements, rosins, sealants, paints and thinners;
- fluids under pressure;
- compressed gasses, including oxygen;
- batteries;
- aviation ordnance and pyrotechnics;
- electrical and electronic circuits;
- operating radio transmitters and radar systems;
- hazardous noise sources.
AIRFRAME STRUCTURES
22
800
- Select and apply fabric and fiberglass covering materials;
- inspect, test, and repair fabric and fiberglass.
- Apply trim, letters, and touchup paint;
- identify and select aircraft finishing materials;
- apply finishing materials;
- inspect finishes and identify defects.
- Select, install, and remove special fasteners for metallic, bonded, and composite structures;
- inspect bonded structures;
- inspect, test, and repair fiberglass, plastics, honeycomb, composite, and laminated primary and secondary structures;
- inspect, check, service, and repair windows, doors, and interior furnishings;
- inspect and repair sheet-metal structures;
- install conventional rivets, form, lay out, and bend sheet metal.
- Weld magnesium and titanium;
- solder stainless steel;
- fabricate tubular structures;
- solder, braze gas and arcweld steel, weld aluminum and stainless steel.
- Rig rotary-wing aircraft; rig fixed-wing aircraft;
- check alignment of structures;
- assemble aircraft components, including flight control surfaces;
- balance, rig and inspect movable primary and secondary flight control surfaces;
- jack aircraft.
- Perform airframe conformity and airworthiness inspections.
AIRFRAME SYSTEMS AND COMPONENTS
29
1.2K
- Inspect, check, service and repair landing gear, retraction systems, shock struts, brakes, wheels, tires, and steering systems.
- Repair hydraulic and pneumatic power system components;
- identify and select hydraulic fluids;
- inspect, check, service, troubleshoot, and repair hydraulic and pneumatic power systems.
- Inspect, check, troubleshoot, service, and repair heating, cooling, air conditioning, pressurization systems, and air cycle machine;
- inspect, check, troubleshoot, service, and repair heating, cooling, air-conditioning, and pressurization systems;
- inspect, check, troubleshoot, service and repair oxygen systems.
- Inspect, check, service, troubleshoot, and repair electronic flight instrument systems and both mechanical and electrical heading, speed, altitude, temperature, pressure, and position indication systems to include the use of built-in test equipment;
- install instruments and perform a static pressure systems leak test.
- Inspect, check, and troubleshoot autopilot, servos and approach coupling systems;
- inspect, check, and service aircraft electronic communication and navigation systems, including VHF, passenger address interphones and static discharge devices, aircraft VOR, ILS, LORAN, Radar beacon transponders, flight management computers and GPWS;
- inspect and repair antenna and electronic equipment installations.
- Check and service fuel dump systems;
- perform fuel management, transfer and defueling;
- inspect, check, and repair pressure-fueling systems;
- repair aircraft fuel system components;
- inspect and repair fluid quantity indicating systems;
- troubleshoot, service, and repair fluid pressure and temperature warning systems;
- inspect, check, service, troubleshoot, and repair aircraft fuel systems.
- Repair and inspect aircraft electrical system components; crimp and splice wiring to manufacture’s specifications;
- and repair pins and sockets of aircraft connectors;
- install, check, and service airframe electrical wiring, controls, switches, indicators and protective devices;
- inspect, check, troubleshoot, service, and repair alternating and direct current electrical systems;
- inspect, check, and troubleshoot constant speed and integrated speed drive generators.
- Inspect, check, and service speed and configuration warning systems, electrical brake controls, and antiskid systems;
- inspect, check, troubleshoot, and service landing gear position indicating and warning systems.
- Inspect, check, troubleshoot, service and repair airframe ice and rain control systems.
- Inspect, check, and service smoke and carbon monoxide detection systems;
- inspect, check, troubleshoot, and repair aircraft fire detection and extinguishing systems.
POWERPLANT THEORY AND MAINTENANCE
8
600
- Inspect and repair a radial engine;
- overhaul reciprocating engine;
- inspect, check, service, and repair reciprocating engines and engine installations;
- install, troubleshoot, and remove reciprocating engine.
- Overhaul turbine engine;
- inspect, check, service, and repair turbine engines and turbine engine installations;
- install, troubleshoot, and remove turbine engines.
- Perform powerplant conformity and airworthiness inspections.
POWERPLANT SYSTEMS AND COMPONENTS
35
1.3K
- Troubleshoot, service, and repair electrical and mechanical fluid rate-of-flow indicating systems;
- inspect, check, service, troubleshoot, and repair electrical and mechanical engine temperature, pressure, and R.P.M indicating systems.
- Inspect, check, service, troubleshoot, and repair engine fire detection and extinguishing systems.
- Repair engine electrical system components;
- install, check, and service engine electrical wiring, controls, switches, indicators, and protective devices.
- Identify and select lubricants;
- repair engine lubrication system components;
- inspect, check, service, troubleshoot, and repair engine lubrication systems.
- Overhaul magneto and ignition harness;
- inspect service, troubleshoot, and repair reciprocating and turbine engine ignition systems and components;
- inspect service, troubleshoot, and repair turbine engine electrical starting systems;
- inspect, service, and troubleshoot turbine engine pneumatic starting systems.
- Troubleshoot and adjust turbine engine fuel metering systems and electronic engine fuel controls;
- overhaul carburetor;
- repair engine fuel metering system components;
- inspect, check, service, troubleshoot, and repair reciprocating and turbine engine fuel metering systems.
- Repair engine fuel system components;
- inspect, check, service, troubleshoot, and repair engine fuel systems.
- Inspect, check, troubleshoot, service, and repair engine ice and rain control systems;
- inspect, check, troubleshoot, service, and repair heat exchangers, supercharger and turbine engine airflow and temperature control systems;
- inspect, check, service, and repair carburetor air intake and induction manifolds.
- Repair engine cooling system components;
- inspect, check, troubleshoot, service, and repair engine-cooling systems.
- Repair engine exhaust system components;
- inspect, check, troubleshoot, service, and repair engine exhaust systems;
- troubleshoot and repair engine thrust reverser systems and related components.
- Inspect, check, service, and repair propeller synchronizing and ice control systems;
- identify and select propeller lubricants;
- balance propellers;
- repair propeller control systems components;
- inspect, check, service, and repair fixed-pitch, constant-speed, and feathering propellers and propeller governing systems;
- install, troubleshoot, and remove propellers;
- repair aluminum alloy propeller blades.
- Inspect and troubleshoot unducted fan systems and components.
- Inspect, check, service and troubleshoot turbinedriven auxiliary power units.
Related Instruction Content
Training Provider(s):
Crew Resource Management
16
Maintenance Resource Management
7
High Altitude Pressure Chamber and Underwater Egress
25
Oxygen and oxygen equipment Rapid decompression and night visual problem trainer Underwater egress trainer
Aircraft hydraulic systems
21
Hydraulics System components and their common faults Associated safety precautions Hydraulic system schematics and fluid flow Hydraulic contamination Hydraulic Seals Stock number, part number, nomenclature, and manufacture date of seals Inspection of seals for defects, cuts, punctures, and abrasions Removal and installation of seals and backup rings Hydraulic Electrical Hydraulic system electrical schematics, current flow, and control circuitry
Aircraft fuel systems
11
Safety precautions associated with fuel system maintenance Fuel system components and their function Fuel quantity system schematics, components and their functions Fuel system fuel flow Fuel system current flow and multiple fuel quantity indication
Landing Gear Systems
4
Landing gear system components and their function Landing gear system fluid flow Landing gear system current flow Sequence of electrical and mechanical events during landing gear system operation
Aircraft Brake Systems
7
Systems Types of aircraft brake systems and their distinguishing characteristics Brake system components and their function Aircraft brake systems safety precautions Sequence of mechanical, hydraulic, and electrical events for normal and emergency brake system operation 9 Brake Anti Skid Anti skid system purpose Anti skid system components and their function Anti skid system operation
Helicopter Power Train Systems
9
Rotary wing power train system components and their function Rotary wing power train main gearbox sections Main gearbox oil system components Rotor head components and their function Gearbox indicating system purpose
Aircraft Propeller Systems
7
T56 Controls/Propellers C130 engine control throttle positions and their corresponding definitions Temperature datrum system operation Powerplant and propeller operation when the Fire Emergency system is activated Assemblies and sections of a Hamilton Standard propeller Function of the propeller governor during over speed and under speed conditions Alpha and Beta ranges of propeller operation
Aircraft Powerplant Systems
76
Basic Engines Basic engine major sections Axial and centrifugal flow compressors Accessory section components Turboprop, turbo shaft, and turbofan engine distinguishing characteristics Auxiliary powerplants T56 Powerplant T56A15 sections T56A15 power section assemblies T56A15 compressor section Propeller brake functions Compressor stall avoidance system Oil system components and functions T700 Engines T700 basic modules T700 engine accessory module T700 engine inlet particle separator components and functions Operating parameters sensed by Hydromechanical Unit for fuel flow metering Hydromechanical Unit controlled components Digital Electronic Control Unit control parameters LTS101 Engines LTS101 modules Power turbine control anticipator system LTS101 compressor LTS101 engine airflow Accessory reduction gearbox module components Torque meter system Inlet airflow modulation system operation Gas producer speed and power turbine speed sensors Measured gas temperature thermocouples ATF3 Turbofan Engine ATF3 modules ATF3 compressors ATF3 internal components Normal and manual fuel scheduling Engine fuel flow control Permanent Magnet Generator Surge control components Engine Component Replacement Common hand tool usage Precision measuring equipment Safety locking devices Safety equipment and procedures Seal installation Hardware installation Corrosion inspection and preventive maintenance Aircraft Pressurization Aircraft pressurization components and operation Aircraft pressurization equipment maintenance and safety
Aircraft Environmental Control Systems
8
Air Cycle Air Condition System Air cycle air condition system components and operation Air cycle air condition system maintenance and safety Vapor Cycle System Vapor cycle air conditioning system components and operation
Aircraft Start Systems
4
Engine Start and Ignition Operation of a basic jet engine Engine start system starters Ignition system components and functions
Flight Control Systems
17
Aerodynamics Newton’s law and Bernoulli’s principle Main rotor flap Rotor blade hunt Tail rotors Autorotation Airfoils and associated terms Forces affecting lift Fixed Wing Flight Controls Flight control surfaces, components and their functions/effects Flight control electrical components Trim system current flow Flight control system maintenance and safety Rotary Wing Flight Controls Flight control parts and functions Flight control movement sequencing Flight control inputs and results Flight control system maintenance and safety
Aircraft Engine Electrical/Electronic Controls
150
Shop Safety Basic DC Circuits Calculate voltage, current, and resistance using Ohm’s Law Circuit valves in series circuits Circuit values in parallel circuits Isolate series circuit faults Isolate parallel circuit faults Voltage and current in series parallel circuits Isolate series parallel circuit faults Introduction to Electricity Basic electrical experiments/applications Mathematic calculations Basic electric circuit properties, principles, and schematics Resistor types Circuit control and protection components and schematic symbols Introduction to AC Alternating current properties and principles AC generator properties, principles, and schematic symbols Inductance Properties, principles, and schematic symbols Capacitance Properties, principles, and schematic symbols Transformers Calculate, measure, and isolate circuits Relays and AC Circuits Isolate relay circuits Diodes and Diode Circuits Isolate diode circuits Electric Troubleshooting Procedures Fundamental electrical circuit troubleshooting techniques Voltmeter readings Schematics and publications Checks, Causes, Flowcharting Troubleshooting application
Aircraft Anti-ice/De-ice Systems
7
Bleed air antiice components and functions Electrical heat antiice components and functions Electrical heat deice components and functions Antice and deice maintenance and safety
Aircraft Fire Protection Systems
4
Detection components and schematics Detection and prevention system maintenance and safety
Aircraft Flotation Systems
4
Flotation system diagrams and components Flotation system electrical/mechanical schematics Flotation system sequence of operations
Aircraft Rescue Hoist Systems
5
Hoist system components and their function Inspect Aircraft Stainless Steel Cable Assemblies
Aircraft Structural Material Identification
4
Material thickness, alloy type, and heat treatments Alloy characteristics, uses, and designations Sheet metal heat treatment processes Metal working processes
Safety Wire and Shear Wire
22
Securing devices safety precautions Single strand safety wire procedures Double strand safety wire procedures Cotter pin installation “Breakaway” wire installation Cannon plug safety wiring
Repair Damaged and Broken Aircraft Electrical Wires, Cables, and Connectors
25
Soldering – Wire Harness Fabrication Safety precautions Preparation of wiring and material Solder and desolder wires to cups, hooks, and turrets Soldering – Multipin Connectors Proper tools Connector assembly and disassembly Pin insertion and extraction Connector testing Soldering – Wiring Harness Repair Repair procedures Raychem environmental splices Shielding terminations Terminal lugs Harness testing Soldering – Coaxial Cable Coaxial preparation and tools Connector Installation Cable TDR and megger testing
Aircraft Electrical Circuit Test Equipment and Fault Isolation
7
Multimeter Measurements Digital and analogy meter usage and operation Electrical circuit current Electrical circuit resistance
Aircraft Structures Corrosion Control
18
Corrosion types and terms Corrosion tools and procedures
Aircraft Structural Repair
160
Rivet Joint Layout Single and multiple row patterns Procedures and formulas Material identification and application Pneumatic Riveting Rivet sizing and application Specifications, tolerances, and methods Removal and replacement of defective rivets Fasteners Identification. Turnlock fastener, Cherrymax rivet, Plate Nut, HiLok, Pin rivet, Channel Nut Application. HiLok, Pin rivet, Huckrimp, Blind rivet, Turnlock Replacement. Turnlock fastener, Cherrymax rivet, Plate Nut, HiLok, Channel Nut Aircraft Construction Fixed wing major airframe sections and components Rotary wing major airframe sections and components Stresses Structural types and construction Fuselage structural members Wing rib types and structural components Fuselage and wing stations Basic Drawings Types Interpreting Standard lines Solid Rivet Identification Part number identification Material identification Application Power Tools Proper utilization of drill press, pneumatic drill, and bench grinder Safety precautions and equipment Maintenance Sheet Metal Forming and Bending 90 degree bends Brake finger alignment/use Aircraft Skin Repair Structural damage evaluation Lap patch fabrication General damage repair types Scratch burnishing Crack repair Metal types Cut, Trim, Deburr, Burnish, and Chamfer metal/metal edges Filler tolerances Precision Measuring Instruments Vernier Caliper Outside and Depth Micrometers Cable Tensiometer Universal Propeller Protractor
Paint and Sealant Application
20
Remove defective sealants Prepare and apply sealants Prepare aluminum surfaces and coatings Apply coatings Assembly, disassembly, and usage of paint guns
Composite Repair
31
Scarf procedures Cutting fabric Mixing resin and catalyst Fabric layup sequence and orientation Material application
Non-Destructive Inspection
15
Cleaning Application and removal of penetrant, cleaner, and developer Black Light inspection Eddy Current setup and use
Stainless Steel Cable Fabrication
9
Flight Control Cable Inspection Cable type and parts identification Cable components and function Adjustment and securing of cable assemblies Cable Assembly Fabrication Cut, Swage, and Pull Test
Shop Safety
3
Personal protective equipment Removal of burrs, chips, and metal cuttings Safety publications Emergency procedures Location of first aid and emergency equipment