Service difficulty report · Wire Harness · Boeing 747438

Difficulty date
December 12, 2005
Submitted
June 6, 2006
Operation
General aviation
Make and model
Boeing 747438
Engine
Rroyce RB211524*
Part
Wire Harness
Condition
Worn
Location
Adc
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

UNABLE TO RESET LEFT ADC POWER CIRCUIT BREAKER. INVESTIGATION FOUND TRANSFORMER T131 IN P6 INOPERATIVE. FURTHER INVESTIGATION FOUND P7 WIRING LOOM CHAFING ON `AOA ALT L` CICUIT BREAKER (A13). `L ADC PWR` CIRCUIT BREAKER WIRE W007-131-22 FOUND BURNT AND BROKEN. `LEFT VOR/MAX RCVR` CIRCUIT BREAKER WIRE W007-162-22 FOUND CHAFED AND `AOA L` AND `ALTN L` CIRCUIT BREAKER WIRING AND LUGS FOUND BURNT (W007-587-22).