Service difficulty report · Feeder Cable · Boeing 747422

Difficulty date
September 26, 2010
Submitted
October 8, 2010
Operation
Air carrier
Aircraft
N178UA
Make and model
Boeing 747422
Aircraft serial
24385
Aircraft time
84,206 hours, 10,256 cycles
Engine
Pwa PW4056
Part
Feeder Cable
Condition
Burned
Location
Apu Gen
Stage of operation
IN
How discovered
V
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

FOUND APU GEN-1 FEEDER CABLES BURNED IN THE BULK CARGO COMPARTMENT LOCATION STA 2060 INNER FRAME NEAR FWD LEFT WASTE TANK. ALSO HAVE CMC EXISTING FAULT MESSAGES: APU GENERATOR-FEEDER-1 FAIL 24049 & APU GENETATOR-1 FAIL 24048. FOUND WIRE W944-113 OUTER SKIN WORN AT STA 2060 NEAR BRACKET. TAPE FEEDER CABLE. APU GEN 1 UNABLE TO BE USED UNTIL FEEDER CABLE REPLACED. PICTURES ON RVI SITE. CHK WITH LINE EG FOR POSSIBLE EVA UNTIL C-CK OR REPAIR AS NECESSARY. SFOLE IS TO MEET AC & EVAL REPAIR TO CABLES. SUGGEST REPLACING SECTION BETWEEN SP430 AND SM3 ONLY. SEE WIRE LIST PAGE 744. REPAIRED REF EVA 80190. IDG OPS CHECKED NORMAL.