MD Helicopters MD900 with PW206E, Flight Manual

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CSP–900RFM206E–1
ROTORCRAFT FLIGHT MANUAL
MD900 With PW 206E
Performance Data
FAA Approved
Original
5–52
VIEWING THE PREVIOUS POWER CHECK:
F
Select
POWER CHECK
top level menu on IIDS alphanumeric display.
F
Press the
ENT
key once to access the second level menu.
PERFORM POWER
ASSURANCE CHK
F
Press the key to enter the next second level menu.
VIEW LAST POWER
ASSURANCE CHK
F
Press the
ENT
to view the last power check.
L PA CHK NG−X.X
L PA CHK EGT−XX.X
F
Press the key to view the results for the other engine.
R PA CHK NG−X.X
R PA CHK EGT−XX.X
5–12.POWER ASSURANCE CHECK – MANUAL
HOW TO PERFORM THE CHECK:
F
The engine to be checked should be at FLY.
F
The other engine should be at IDLE or OFF.
F
IPS and CABIN HEAT should be off and the generator load should be 10%
or less.
F
Record the IIDS OAT and pressure altitude.
F
Use the Engine Torque Chart (Ref. Figure 5−43) to determine the torque value
to be utilized based on the OAT and pressure altitude recorded in the previous
step.
F
Increase collective and stabilize at the predetermined torque value. After one
minute, record the EGT and N
G
from the IIDS.
F
Use the EGT Chart (Ref. Figure 5−44) and the N
G
Chart (Ref. Figure 5−45
or Figure 5−46) to determine maximum values of EGT and N
G
for the specific
conditions. Subtracting the recorded values from the maximum values will
result in the EGT and N
G
margins.
NOTE
: The IIDS displays N
G
in tenths (ie. 91.6%) viewable at the third level of the
POWER CHECK menu.
F
The power check is passed if both the EGT and N
G
margins are greater than
or equal to zero. If either the EGT or N
G
margin is negative, repeat the test
allowing torque to stabilize for 5 minutes. If the EGT margin is still negative,
then the power assurance check is failed. If only the N
G
margin is negative
refer to the Rotorcraft Maintenance Manual for additional testing and troubleD
shooting.