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Service ceiling
From Wikipedia, the free encyclopedia
In aeronautics, the service ceiling is the density altitude where the flying in a clean configuration, at the best rate of climb airspeed for that altitude, and with all engines operating and producing maximum continuous power will produce a 100 feet per minute climb. Margin to stall at service ceiling is 1.5g.
The one engine inoperative (OEI) service ceiling of a twin-engine, fixed-wing aircraft is the density altitude where flying in a clean configuration, at the best single rate of climb airspeed for that altitude, with one engine producing maximum continuous power and the other engine shut down and feathered will produce a 50 feet per minute climb.
However some performance charts will define the service ceiling as the pressure altitude at which the aircraft will have the capability of climbing at 50 fpm with one propeller feathered.
