SDR YENA2022120201191

Service difficulty report · O-Ring · Airbus A321231

Difficulty date: November 29, 2022
Submitted: December 2, 2022
Operation: Air carrier
Aircraft: N954JB
Make and model: Airbus A321231
Aircraft serial: 06725
Aircraft time: 26,212 hours, 8,509 cycles
System (JASC): 4930 · APU Engine Fuel and Control
Part: O-Ring
Condition: Leaking
Location: Fmu
Stage of operation: CR
How discovered: 9
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

FLT1216, SJU-JFK. ODOR & FUMES EVENT, DIRTY SOCK, MOLD & MUSTY ODOR. ON THE GROUND AND THEN DURING CRUISE. MILD TO MODERATE ODOR DETECTED BY PILOTS, FA, & PAX. SEVERAL HEADACHE COMPLAINTS. PERSISTENT ODOR. COCKPIT & FWD CABIN. ODOR FROM AIR VENTS. SHUT CROSSBLEED VALVE AND TURNED OFF PACK 1. ODOR MUCH LESS WITH PACK 1 OFF. REPLACED DAMAGED FMU O-RING IAW AMM 49-32-11. THE LEAK TEST IS GOOD.

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