Service difficulty report · Odor · Boeing 737522

Difficulty date
March 21, 2004
Submitted
March 30, 2004
Operation
Air carrier
Aircraft
N937UA
Make and model
Boeing 737522
Aircraft serial
26668
Aircraft time
33,070 hours, 20,943 cycles
Engine
Ge CFM56*
Part
Odor
Condition
Detected
Location
Cockpit
Stage of operation
CL
How discovered
O
Nature of condition
B
Precautionary procedure
A

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

What was found

RETURNED TO FIELD UNDER AMBER ALERT DUE TO A BURNING ODOR IN COCKPIT. CHECKED BEHIND P6-3 PANEL, FOUND WIRE ON R4 APPEARING TO BE BURNT. UPPER ROW OF WIRES THIRD FROM OTBD, WAS BLUE NOW BLACK. RELAY R4 AND REPAIRED BURNED CONNECTOR.