# SDR AALA202608124014

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 23, 2026
- Submitted: August 12, 2026
- Operation: Air carrier
- Aircraft: [N908AA](https://openairdocs.org/aircraft/N908AA), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 7775
- Aircraft time: 27,680 hours, 10,999 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Module
- Part number: 41310204
- Condition: Leaking
- Location: Apu Lubrication
- Component: Apu, Honeywell, 1319A
- Component part number: 38007081
- Stage of operation: DE
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202608124014

## Discrepancy

AIRCRAFT GROUNDED, DURING DESCENT, FLT ATTENDS REPORTED A STRONG ODOR IN AFT HALF OF CABIN. LIKENED TO ODOR OF EXHAUST. DISSIPATED AFTER LANDING. NO ODORS  IN FLT DECK OR FWD HALF OF CABIN.  MAINTENANCE FOUND THE APU FCU & LUBE MODULE LEAKING OIL OUT OF THE AFT BELLOW DRAIN PORT ALONG WITH EVIDENCE OF COKING IN THE APU GEABOX VENT TUBE & AIR OIL SEPARATOR - MAINTENANCE REPLACED THE FCU PER AMM 49-32-11 - THE LUBE MODULE WAS REPLACED PER AMM 49-91-45 *AALA202608124014* - THE APU GEARBOX VENT TUBE WAS REPLACED PER AMM 49-26-55 *AALA202608129232* AND THE AIR OIL SEPARATOR REPLACED PER AMM 49-26-54 *AALA202608127582* - A DECONTAMINATION OF THE ECS  ACCOMPLISHED PER JOB CARD 26L00021014 WITH NO LEAKS OR ODORS NOTED

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