AIRPLANE
FLIGHT
PERFORMANCE
ANAC APPROVED 5-01
REVISION 6 code 01 Page 11
TAKEOFF PATH
The takeoff path assumes failure of one engine at V
EF
and extends
from a standing start to a point in takeoff at which the airplane is at
least 1500 ft above takeoff surface and has achieved the enroute
configuration and final segment climb speed. The CAFM determines
the takeoff path up to 3000 ft AGL.
TAKEOFF FLIGHT PATH
The takeoff flight path starts at 35 ft above the takeoff surface, at the
end of the one-engine-inoperative takeoff distance (TOD/OEI), and
ends at 3000 ft AGL, for the CAFM. The takeoff flight path is divided
into four segments related to distinct changes in configuration, power,
and speed: first segment, second segment, acceleration segment, final
segment. All segments are flown with the critical engine inoperative.
GROSS TAKEOFF FLIGHT PATH
It is the actual takeoff flight path.
NET TAKEOFF FLIGHT PATH
It is the actual takeoff flight path (gross path) reduced, at each takeoff
segment, by a gradient of climb defined by the regulations.
LEVEL-OFF HEIGHT
It is the height or altitude where the airplane is leveled for acceleration
and flap retraction, i.e. where the acceleration segment takes place.
The gross level-off height is related to the gross takeoff flight path,
while the net level-off height is related to the net takeoff flight path. The
airplane acceleration in the net takeoff flight path is the actual gross
airplane acceleration reduced by the acceleration decrement
equivalent to the climb gradient reduction defined by the regulations.
MINIMUM LEVEL-OFF HEIGHT
It is defined by regulations as 400 ft AGL. The user can define higher
levels.
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