TM 55-1510-219-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
PRIOR TO MAINTENANCE TEST FLIGHT (CONT)
*c. Interior, exterior, and annunci-
C41
ator lights - Check.
*d. Fuel control panel - Check the standby
pumps and firewall valves as follows to
insure that they are powered through the
essential bus:
(1) Battery switch - OFF.
(2) Standby pump circuit breakers (left and
right) -Pull.
(3) Firewall shutoff valve circuit breakers
(left and right) - Pull.
(4) Firewall shutoff valve switches - Close
(listen for operation).
(5) Standby pump switches -
C43
ON, then listen for operation.
(6) Battery switch - ON. Check #1 FUEL
PRESS
and
#2
FUEL
PRESS
annunciator lights illuminated.
(7) Firewall shutoff valve switches - OPEN.
Check #1 FUEL PRESS and #2 FUEL
PRESS annunciator lights extinguished.
(8) Standby pump switches -OFF.
2-2
