Engines and propellers

Choose a chapter

• ATA 49 — Auxiliary power unit

  A small onboard power unit that supplies power separately from the main engines.

• ATA 61 — Propellers / propulsors

  Propellers, their controls, brakes and indicators. Check the aircraft manual for the right blades, hubs and control units.

• ATA 70 — Standard practices — engine

  Common engine maintenance practices.

• ATA 71 — Power plant

  The complete engine installation, including its covers and mounts.

• ATA 72 — Engine — turbine / turboprop

  Turbine-engine sections that compress air, burn fuel and turn engine shafts, plus drives for related equipment.

• ATA 73 — Engine fuel and control

  Systems that supply, measure and control fuel within the engine.

• ATA 74 — Ignition

  Equipment that supplies and controls the spark used to start or run an engine. Check the engine model and full part number.

• ATA 75 — Air

  Engine airflow, cooling and compressor air controls. Engine starting has its own section in chapter 80.

• ATA 76 — Engine controls

  Controls for engine power and emergency shutdown. Check the exact unit and any required software before choosing a replacement.

• ATA 77 — Engine indicating

  Sensors and displays for engine power, temperature and condition. Check the exact equipment and location in the engine manual.

• ATA 78 — Engine exhaust

  Engine exhaust, noise-reduction equipment and systems that reverse thrust. Check the installed assembly before choosing a replacement.

• ATA 79 — Oil

  Engine oil tanks, oil supply and oil-level or pressure displays.

• ATA 80 — Starting

  Equipment that starts and turns the engine. Check the engine and aircraft model for the right starter, drive and controls.

• ATA 81 — Turbocharging

  Turbochargers and their controls on piston engines. Check the engine model and exact turbocharger part number.

• ATA 82 — Water injection

  Water-injection tanks, pipes and controls on engines that use this system. Check the engine manual before selecting parts.

• ATA 83 — Accessory gearboxes

  Engine gearboxes and drives for related equipment. Check the gearbox assembly and full part number before requesting a replacement.

• JASC 85 — Reciprocating engine

  Engines with pistons that move back and forth. FAA JASC lists these under family 85; check the engine manual for its chapter numbering.