SDR DALA1208976311

Service difficulty report · Unknown · Boeing 747451

Difficulty date: February 15, 2012
Submitted: February 17, 2012
Operation: Air carrier
Aircraft: N671US
Make and model: Boeing 747451
Aircraft serial: 26477
Aircraft time: 7,093 hours, 870 cycles
System (JASC): 2120 · Air Distribution System
Part: Unknown
Condition: Odor
Location: Cabin
Stage of operation: CR
How discovered: O
Nature of condition: B
Precautionary procedure: H

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

What was found

FLT 630, DURING CRUISE AT FL330, A BURNING ELECTRICAL ODOR NOTED THROUGHOUT AIRCRAFT, WITH STRONGEST INDICATION NEAR DOOR 5R. TURNED OFF LEFT & RIGHT UTILITY BUSSES, AND ODOR DISSIPATED. STATUS MESSAGE LAVATORY AND GALLEY FANS DISPLAYED. CONTINUED TO DESTINATION WITH UNEVENTFUL LANDING. REPLACED PRIMARY LAVATORY AND GALLEY FANS, RELAY R8671, AND ASSOCIATED FILTERS. REPLACED WATER SYSTEM COMPRESSOR, RELAY R859, AND PRESSURE SWITCH S251. SYSTEMS CHECKED GOOD.