SDR 2007UALA00645

Service difficulty report · Unknown · Boeing 757222

Difficulty date: March 3, 2007
Submitted: March 13, 2007
Operation: Air carrier
Aircraft: N540UA
Make and model: Boeing 757222
Aircraft serial: 25252
Aircraft time: 52,040 hours, 19,063 cycles
Engine: Pwa PW2037
System (JASC): 2120 · Air Distribution System
Part: Unknown
Condition: Odor
Location: Cabin
Stage of operation: DE
How discovered: O
Nature of condition: B
Precautionary procedure: O

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

What was found

NOTICED BURNING PLASTIC ODOR ON DESCENT OUT OF 240. TURNING OFF RIGHT RECIRC FAN NO CHANGE. PER CREW, ODOR IN FLT DECK AREA, WENT AWAY AT APPROX 8000 FT. [SUP 05-18-07] CHECKED MEC FOR ELEC MODULE FAULTS OR ODOR IN AREA AND NONE FOUND. CHECKED WINDOW HEAT CONNECTIONS FOR EVIDENCE OF LOOSE OR OVERHEATING AND ALL CHECKED OK. NO PROTECTIVE CAPS MELTED. NO EICAS MESSAGES FOUND. RIGHT HALF OF THE VNAV SWITCH IS BURNED OUT. RELAMPED.