# SDR AALA202606284611

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 23, 2026
- Submitted: June 28, 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): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Fcu
- Part number: 4419215
- Condition: Leaking
- Location: Apu
- Component: Apu, Hnywl
- Component part number: 38007081
- Stage of operation: DE
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202606284611

## Discrepancy

AIRCRAFT GROUNDED: ON DESCENT, FLT ATTS REPORTED A STRONG ODOR IN AFT HALF OF CABIN.  LIKENED TO ODOR OF EXHAUST.  IT DISSIPATED AFTER LANDING. NO ODORS DETECTED IN FLT DECK OR FRWD HALF OF CABIN.   MAINT REPLACED FCU IAW AMM 49-32-11. THE LUBE MODULE REPLACED IAW AMM 49-91-45, AALA202608124014.   APU GEARBOX VENT TUBE WAS REPLACED IAW AMM 49-26-55 AALA202608129232 & AIR OIL SEPARATOR REPLACED IAW AMM 49-26-54, AALA202608127582. DECONTAMINATION OF ECS ACCOMPLISHED IAW JOB CARD 26L00021014.  NO LEAKS OR ODORS NOTED.

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