Altitude engine Regulation
Altitude engine means a reciprocating aircraft engine having a rated takeoff power that is producible from sea level to an established higher altitude.
Also defined in 3 more sources
A reciprocating engine whose rated sea-level takeoff power can be produced to an established higher altitude.
Guidance: Aviation Maintenance Technician Handbook — Airframe, p. G-2
An aircraft reciprocating engine equipped with a supercharger that allows it to maintain its rated sea-level horsepower to an established higher altitude.
Guidance: Aviation Maintenance Technician Handbook — Powerplant, p. G-2
A reciprocating aircraft engine having a rated takeoff power that is producible from sea level to an established higher altitude.
Guidance: Pilot's Handbook of Aeronautical Knowledge, p. G-3