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Page Title:
PROCEDURE TROUBLESHOOTING REFERENCE PRIOR TO MAINTENANCE TEST FLIGHT |
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 TM 55-1510-218-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
PRIOR TO MAINTENANCE TEST
FLIGHT (CONT)
*c. Interior, exterior, and annunci-
C45
ator lights - Check.
*d. Fuel control panel- Check the
standby pumps and firewall
valves as follows to ensure that
they are powered through the
essential bus:
C4
(1) Battery switch - OFF.
(2) Standby pump circuit
breakers (left and right) -
Pull.
(3) Firewall shutoff valve cir-
cuit
breakers
(Ieft
and
right) - Pull.
(4) F i r e w a l l s h u t o f f v a l v e
switches - Close, (listen for
operation).
(5) Standby pump switches -
ON, then listen for opera-
tion.
(6) Battery switch - ON. Check
#1 FUEL PRESS and #2
FUEL PRESS
annunciator
Iights illuminated.
(7) F i r e w a l l s h u t o f f v a l v e
switches - OPEN Check #1
FUEL
PRESS and #2
FUEL PRESS annunciator
Iights extinguished.
(8) Standby pump switches -
OFF.
2-2
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