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FADEC.
a. RFD Check.
* (6) IGN circuit breaker switch IGN.
b. RPM, TGT, and TRQ v e r t i c a l s c a l e
c. FORMATION LIGHTS switch As desired. instruments Check.
d. CONSOLE LT switch As desired. c. MFD Check.
e. INST LT switch As desired.
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TM 1-1520-248-10
d. MFD auxiliary control panel Check; Slip
indicator full of fluid. d. Throttle Check; full travel, idle detent,
and return to closed position.
e. Clock Check.
O* 5. BATT 2 switch BATT 2.
O f. Radar detector indicator Check.
* 6. BATT 1 switch BATT 1.
g. Magnetic compass Full of fluid.
WARNING
NOTE
When helicopter is loaded with rockets,
Do not adjust standby altimeter until DC d o n o t u s e e x t e r n a l p o w e r .
power has been applied. Electromagnetic interference from
external source may cause accidental
h. Standby flight instruments Check. firing of rockets.
i. FADEC AUTO/MAN switch Check. * 7. GPU Connect as required (DC only).
j. MPD Check. * 8. Caution, warning, and advisory messages
and audio Check; audio activated, caution,
k. MFK Check; ZERO and EMER switch warning, and advisory messages review and
covers down. acknowledge.
NOTE * 9. FADEC AUTO/MAN switch Check
AUTO.
If gun is installed, and rounds are not
loaded, place GUN switch in the ARMED 10. MPD Test and set; switches as follows:
position.
a. TEST/DGT OFF TEST. V e r i f y a l l
l. ACP Check and set switches as required. segments and digits are displayed on
vertical scales and MPD.
m. CSC control panel Set as desired.
b. MPD SEL Select BATT V - START V
n. External RMT/ICS switch As desired. position.
O o. (OH-58D) Fuel control panel Check, c. BRT Set as desired.
cover down.
p. SCAS control panel Check and set 8-20. BEFORE STARTING ENGINE CPG (AS
switches as follows: REQUIRED).
(1) SCAS PWR OFF.
(2) FORCE TRIM FORCE TRIM * 1. Seat belt, shoulder harness, and inertia reel
(3) HYD SYS HYD SYS. Fasten and check.
4. Flight controls and switches Check and set 2. Instrument panel instruments and switches
as follows: Check and set as follows:
a. Antitorque pedals Check; freedom of a. CSC control panel Set as desired.
movement, full travel, and pedals centered.
b. MMS switches Set.
b. Cyclic Neutral, friction as required.
c. MFD Check.
c. Collective Down and unobstructed,
friction as required, and switches set as 3. Flight controls Check; engage/disengage
required. cyclic as required, collective unobstructed.
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TM 1-1520-248-10
g. Rotor blades Turning by 25% NG.
8-21. (OH-58D) ENGINE START.
h. START switch Release at 50% NG.
* 1. Fireguard Posted (if available).
i. NG Check stabilized at idle (63 to 65%).
* 2. Rotor blades Clear and untied.
NOTE
* 3. Engine start Accomplish as follows:
For cold temperature starts, if ENG OIL and/
CAUTION or XMSN OIL pressures are above limits, or
ENG OIL and/or XMSN OIL temperatures
are below limits, do not accelerate engine
• DO NOT attempt start if BATT V is less above idle.
than 21 volts.
• BATT V may go below 14 volts during * 4. XMSN OIL pressure and ENG OIL pressure
the initial starting cycle; however, Within limits.
BATT V must be at least 14 volts prior
to advancing the throttle. If after 8-22. ENGINE START (AUTOMATIC advancing the throttle the BATT V
decreases to less than 14 volts, abort MODE).
the start.
* 1. Fireguard Posted (if available). • If the TGT does not begin to rise by
18% NG, abort start. * 2. Rotor blades Clear and untied.
• To prevent damage to engine if the
FUEL CONT c a u t i o n message i s * 3. Engine start Accomplish as follows:
displayed on the MFD, do not start the
engine. a. AUTO/MAN switch Check AUTO.
• To prevent damage to engine if auto
acceleration occurs when the throttle CAUTION
is opened, abort start.
• To prevent damage to engine if it becomes apparent that temperature • DO NOT attempt start if BATT V is less
limits will be exceeded before 50% NG than 21 volts.
is attained, abort the start. • To prevent a hot start if the NO AUTO
START advisory is displayed on the
a. START switch Press and hold. Start time. MFD, do not attempt an automatic start
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OPERATOR’S MANUAL FOR ARMY OH-58D HELICOPTER 2(76)
