f. Loose or corroded ground connection.
g. Defective wiring to inverter.
C44. Battery charge annunciator light inoperative.
a. Defective light bulb.
b. Connections on current detector loose or
c. Defective current detector printed circu.
C45. One portion of interior lighting or lighting con-
trol system inoperative.
a. Defective light circuit board or wheat lights.
b. Defective components in overhead control
c. Defective power supply.
Fuel crossfeed valve inoperative or fuel fail Iight
a. Defective standby fuel pump.
b. Defective crossfeed valve.
Standby fuel pump inoperative.
a. Defective standby pump relay.
b. Defective switch in fuel management panel
c. Defective fuel pressure switch.
C48. Pnuematic surface deicer system inoperative.
a. Defective surface deicer control relay.
Right and left FIRE PULL warning lights do
not illuminate in my test position of fire protec-
tion test switch.
a. Tripped fire detector circuit breaker.
b. Defective fire protection test switch.
c. Defective wiring.
Engine fire detection system wholly or partially