FAA Aviation Mechanic Powerplant (AMP)Turbine EnginesMedium
A technician is reading a turbine engine maintenance manual that references 'engine stations' for locating components. In what order are engine stations numbered along the engine?
- AFrom the engine centerline outward radially
- BFrom the turbine section forward toward the inlet
- CFrom the front inlet of the engine progressively to the rear exhaust
- DRandomly assigned based on manufacturer preference
Show answer & explanationAnswer & explanation
Correct answer: C. From the front inlet of the engine progressively to the rear exhaust
Engine stations are standardized numerical designations that progress from the front of the engine (inlet, station 1 or 2) rearward through the compressor, combustor, turbine, and exhaust to the rear of the engine, allowing consistent reference to specific locations for pressure and temperature measurements.
Why the other options are wrong
- A. Stations describe axial location along the engine, not radial position.
- B. Numbering progresses front-to-rear, not rear-to-front.
- D. Station numbering follows a standardized scheme, not random assignment.
Engine Station Numbering
A standardized system of numbers assigned along the length of a gas turbine engine, from inlet to exhaust, used to reference specific measurement or component locations (e.g., Pt2, Pt7).
- Station 2 is typically compressor/fan inlet
- Numbers increase moving aft through engine
- Used in EPR and other performance calculations
Memory trick: 'Front to back, numbers stack' - stations increase moving rearward