The AP TRIM FAIL annunciator will
extinguish by pressing the AP/YD
disconnect button on the control
wheel to the second detent.
Repeat steps (i) thru (1) above using
HSI heading marker Move to command a
bank on flight director indicator.
GO-AROUND switch Press and verify that
GA annunciator light illuminates, autopilot
disengages, and that flight director indicator
TEST switch (pilot's flight director indicator)
Press and verify that attitude display
indicates an additional 10° pitch up and 20°
right roll, and GYRO flag is visible.
Autopilot trim fail system Check as follows: a.
Autopilot Engage. Command DN on AP pitch
wheel and hold TRIM TEST switch when elevator
trim wheel starts to rotate.
Verify that autopilot disengages and AP
TRIM FAIL and MASTER WARNING lights
illuminate within 10 seconds. Repeat steps
(a) and (b) using opposite commands.
Avionics Check and set as required.
Altimeters Check and set.
8-36. * TAXIING.
Excessive use of brakes with the
increased weight of this aircraft will
increase the possibility of brake
failure and/or brake fire. Judicious
use of the brakes is recommended
with coordinated use of beta range.
Taxi speed con be effectively controlled by the use
of power application and the use of the variable pitch
propellers in beta range. Normal turns may be made with
the steerable nose wheel; however, a turn may be
tightened by using full rudder and inside brake as
necessary. Turns should not be started with brakes alone,
nor should the aircraft be pivoted sharply on one main
Flight instruments Check for normal operation.
8-37. ENGINE RUNUP.
Mission control panel Set.
Propeller manual feathering Check as follows:
Condition lever LOW IDLE.
Left propeller lever FEATHER. Check that
Left propeller lever HIGH RPM.
Repeat procedure for right propeller.
Autofeather Check as follows:
Condition levers LOW IDLE.
Autofeather switch Hold to TEST. (#1
AUTOFEATHER and #2 AUTOFEATHER
advisory annunciator lights should remain
Power levers Advance to approximately
22% torque, then move autofeather switch
to TEST. Both #1 AUTOFEATHER and #2
lights should illuminate.
Left power lever Retard.
At approximately16 to 21% torque, check
#2 AUTOFEATHER advisory annunciator
At approximately 9 to 14% torque, check #1
AUTOFEATHER advisory annunciator light
extinguished. (Left propeller starts to