SDR YENA2025022500190

Service difficulty report · Oil System · Airbus A321231

Difficulty date: February 25, 2025
Submitted: February 25, 2025
Operation: Air carrier
Aircraft: N979JT
Make and model: Airbus A321231
Aircraft serial: 07627
Aircraft time: 33,508 hours, 6,572 cycles
System (JASC): 4990 · APU Oil System
Part: Oil System
Condition: Leaking
Location: Apu
Stage of operation: CL
How discovered: O
Nature of condition: K, B
Precautionary procedure: O

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

What was found

FLT#733, BOS-SFO. 'PASSING 5000 FT IN CLOUDS STRONG SMELL OF FUMES FROM COCKPIT TO AFT; COMPLIED WITH INFORMATION NOTICE 2017-T015, SECTION A, ISOLATED FAULT TO TYPE 1. APU OIL LEAK BETWEEN LOAD COMPRESSOR & AIR INLET, PER TSM 05-50-00-810-085-B/ TSM 05-50-00-810-085-D, PERFORMED LEVEL A DECONTAMINATION OF ECS REF AMM 21-00-00-615-802. A/C IS OK FOR SERVICE.'

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