Eurocopter AS 350 83 Flight Manual page 82

..FLIGHT MANUAL
SECTION 4.2
.ENGINE POWER CHECK
1 IN-FLIGHT CHECK PROCEDURE
-Stabilize level flight preferably at an altitude where turbulence is
zero or very low.
CAUTION: THESE CHECKS ARE ONLY VALID WITH P2 BLEED SELECTED OFF
(ELECTRICAL CONSUMPTION LESS THAN 50A).
-Select a power setting close to max continuous power on the FLI.
These bleed valve flag should not be visible under these conditions,
otherwise increase altitude.
.1.1 VEMD procedure
The torque margin and t4 checks are performed automatically
by the VEMD. Select the "Engine Power Check" page using the SCROLL
button (VEMD on collective pitch).
The result and the calculation parameters required are displayed on the
VEMD lower display, record the results.
The values provided by the VEMD can be checked against the graphs
(Figures 1 and 2) (Refer to paragraph 1.2).
R
1.2 Use of the chart
-Record The following parameters: torque, Ng, t4, NR, altitude and
outside air temperature.
-Use the graphs (Figures 1 and 2) as indicated by the direction of
the arrows.
TorQue marQin check:
~
Determine the position of point P on Figure 1.
The engine power is correct if point P is in the "correct" area in
the graph.
t4 marQin check:
Determine the position of point T in Figure 2.
The thermodynamic loading is correct if point T is in the "correct"
area in the graph.
MQI£ : If in doubt as to condition of the engine, repeat the check to
eliminate any error of reading.
.
DGAC Approved: 350 83 ~.~
I A I 8 I C I D I F I 98-36 Page 1