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FIRST ENGINE START (GPU START)-continued
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TM-1-1510-223-MTF Maintenance Test Flight Manual Army Model RC-12
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AC and DC GPU units
TM 1-1510-223-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
FIRST ENGINE START (GPU START) (CONT)
CAUTION
Monitor TGT to avoid a hot start. If there is a rapid rise in
TGT, be prepared to abort the start before limits are exceeded.
During engine start, the maximum allowable TGT is 1000
C
for 5 seconds. If this limit is exceeded, initiate Abort Start
procedure and discontinue start. Enter the peak temperature
and duration on DA Form 2408-13-1.
7.
TGT and N1 - Monitor (TGT 1000 maximum).
C
8.
Oil pressure - Check (60 PSI minimum).
9.
# 1 ENG START switch - OFF after TGT peaks.
10. CONDITION lever - HIGH IDLE.
Monitor TGT as CONDITION lever is advanced.
11. DC GPU disconnect - As required.
12. # 1 GENERATOR switch - RESET
then ON, for second engine battery start.
SECOND ENGINE START (GPU START)
1.
Propeller area - Clear.
2.
# 2 ENG START switch - START- IGNITION.
# 2 IGN ON annunciator should illuminate and # 2
FUEL PRESS annunciator should extinguish.
3.
CONDITION lever (after N1 RPM passes 13%
minimum) - LOW IDLE.
2-38

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