# SDR AALA202609167972

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 12, 2026
- Submitted: September 16, 2026
- Operation: Air carrier
- Aircraft: [N111ZM](https://openairdocs.org/aircraft/N111ZM), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 5983
- Aircraft time: 44,326 hours, 8,892 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Cooling Fan
- Part number: 707239471
- Part serial: P3725CC
- Condition: Leaking
- Location: Zone 100
- Component: Apu, Hnywl, 1319A
- Component part number: 38007081
- Stage of operation: DE
- How discovered: O
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202609167972

## Discrepancy

AIRCRAFT WAS GROUNDED: DESCENDING THRU10000 FT THE PACKS GIVE OFF STRONG ODOR - MAINTENANCE FOUND THE APU OIL COOLING FAN LEAKING OIL FROM THE FAN SIDE OF THE TRANSFER TUBE AND REPLACED IT PER AMM 49-52-51

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