ATPL: For a turbine engine, the self-sustaining speed relates to the minimum RPM at which the engine:
Domanda 251, Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot license
| Is Designed To Idle After Starting. |
| Will enable the generators to supply bus-bar voltage. |
| Operates most efficiently in the cruise. |
| Will continue to operate without any starter motor assistance. |
