# SDR AALA202602183501

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 16, 2026
- Submitted: February 18, 2026
- Operation: Air carrier
- Aircraft: [N773XF](https://openairdocs.org/aircraft/N773XF), registered now
- Make and model: Airbus A319-112
- Registry model: [Airbus A319-112](https://openairdocs.org/model/airbus-industrie-a319-112) (OpenAirDocs)
- Aircraft serial: 2012
- Aircraft time: 67,210 hours, 34,614 cycles
- System (JASC): [4930 · APU Engine Fuel and Control](https://openairdocs.org/jasc/4930)
- Part: Fcu
- Part number: 4419215
- Condition: Leaking
- Location: Apu
- 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/AALA202602183501

## Discrepancy

AIRCRAFT WAS GROUNDED: AIRCRAFT HAD SUBTLE HINTS OF ODOR SIMILAR TO SOF EVENT BUT NOT BAD ENOUGH OR PERSISTENT ENOUGH TO WARRANT ACTION AIRBORNE. IT WAS NOTICEABLE FOR A SHORT TIME DURING ENGINE START AND TAXI BUT THEN DISSIPATED, AND AGAIN IN A SIMILAR FASHION BUT NOT LONG ENOUGH OR PERSISTENT ENOUGH TO WARRANT ACTION AIRBORNE. I DO THINK THE POTENTIAL EXISTS FOR IT TO GET WORSE AND THEREFORE AM REFUSING THE AIRCRAFT. MAINTENANCE FOUND FUEL CONTROL UNIT LEAKING AND REPLACED IAW AMM 49-32-11.

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