Service difficulty report · Odor · Boeing 747422

Difficulty date
February 17, 2004
Submitted
February 24, 2004
Operation
Air carrier
Aircraft
N197UA
Make and model
Boeing 747422
Aircraft serial
26901
Aircraft time
25,389 hours, 3,187 cycles
Engine
Pwa PW4056
Part
Odor
Condition
Detected
Location
Cockpit
Stage of operation
NR
How discovered
O
Nature of condition
J, B
Precautionary procedure
H

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

What was found

RIGHT ELEC UTIL EICAS MSG WITH ELECTRICAL ODOR IN GALLEY. AFTER SHUTTING DOWN RIGHT UTIL BUS, LEFT BUS TRIPPED. W/U STATES ELECTRIC BURNING ODOR FOLLOWED BY "ELEC UTILITY BUS R" AND THEN BY "ELEC UTILITY BUS L" BOTH UTILITY BUS SW'S SELECTED "OFF" PER FLT MAN IRRG 7-21 NO FURTHER RESET ATTEMPTED AND ODOR STOPPED. MAINTENENACE REPORTED THEY ACP ENGINE RUNS FOR APPROX 40 MIN; ALL ELECTRICAL SYSTEMS USED; NO CHAPTER 24 FAULTS FOUND OP CK'D OK, CHECK CABIN FOR ELECTRICAL ODOR NONE NOTED. RAN THE OVENS NO ODORS NOTED.