# SDR FDEA202601110022

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 11, 2026
- Submitted: January 12, 2026
- Operation: Air carrier
- Aircraft: [N748FD](https://openairdocs.org/aircraft/N748FD), registered now
- Make and model: Airbus A300 B4-622R
- Registry model: [Airbus A300 B4-622R](https://openairdocs.org/model/airbus-a300-b4-622r) (OpenAirDocs)
- Aircraft serial: 633
- Aircraft time: 47,568 hours, 20,391 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Apu
- Part number: GTCP331250H
- Part serial: P1160
- Condition: Leaking
- Location: Zone 100
- Stage of operation: TX
- How discovered: O
- Nature of condition: K, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FDEA202601110022

## Discrepancy

PRIOR TO PUSHBACK, WITH ALL DOORS CLOSED EXCEPT CREW ENTRANCE DOOR, RECEIVED AN ECAM ALERT FOR MAIN DECK CARGO SMOKE DETECTED MID &  EXPERIENCED SMOKE IN COCKPIT FROM GASPERS.   SMOKE ON SET RAPID & HIGHLY  CONCENTRATED.  SMOKE CLEARLY VISIBLE IN COCKPIT,   APU BLEED AIR SELECTED OFF.  FLIGHT CREW & LOAD CREW EXITED ACFT.  APU HAD BEEN RUNNING FOR FIVE TO TEN MINS PRIOR TO SMOKE EVENT.  AMM 21-51-00-03, OIL WETTING FOUND IN APU, APU WAS APROVED FOR R & R IAW W/C 4910000-00-00. OPS & LEAK CHKD GOOD.  PERFORMED PACK BURN OUT, CHANGED COALESCER SOCKS IAW AMM 21-51-16-03-0. RAN BOTH ENGINES AGAIN AND RAN APU BLEED AIR FOR EXTENDED PERIOD OF TIME, NO SMOKE OR ODOR NOTED. ACFT OK FOR SERVICE.

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