SDR AALA201911029010

Service difficulty report · O-Ring · Airbus A321231

Difficulty date: October 29, 2019
Submitted: November 4, 2019
Operation: Air carrier
Aircraft: N559UW
Make and model: Airbus A321231
Aircraft serial: 5292
Aircraft time: 24,142 hours, 9,636 cycles
System (JASC): 4950 · APU Bleed Air System
Part: O-Ring
Condition: Defective
Location: Apu
Stage of operation: NR
How discovered: O
Nature of condition: B
Precautionary procedure: K

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

What was found

AIRCRAFT WAS GROUNDED: STRANGE ODOR (LIKE BURNING PLASTIC) FOUND THROUGHOUT INTERIOR OFAIRCRAFT UPON CREW ARRIVAL. REMOVED APU COOLING FAN, REPLACED O-RINGS, REFERENCE IPC 49-52-09-1, ITEMS 80 & 100. REINSTALLED APU COOLING FAN. OPS CHECK GOOD, NO LEAKS NOTED. ALL DONE IAW AMM 49-52-51-400-002A.

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