# SDR FDEA202611011712

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 1, 2026
- Submitted: November 2, 2026
- Operation: Air carrier
- Aircraft: [N657FE](https://openairdocs.org/aircraft/N657FE), registered now
- Make and model: Airbus A300 F4-605R
- Registry model: [Airbus A300 F4-605R](https://openairdocs.org/model/airbus-industrie-a300-f4-605r) (OpenAirDocs)
- Aircraft serial: 748
- Aircraft time: 41,471 hours, 22,645 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Part number: CGDU220000
- Part serial: 657
- Condition: Failed
- Location: Zone 100
- Part time: 12,433 hours, 7,714 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FDEA202611011712

## Discrepancy

MDIS  657     26-12  9422     01NOV26 19:41 MEM  FACT  AVIONICS SMOKE DETECTION ALERT DURING MX PRE-FLT   FACT 01NOV26 20:34   MEM  AMM 26-15-12-04  WITH REF ABOVE. REMOVED AND REPLACED AVIONICS  COMPARTMENT SMOKE DETECTOR UNIT 13WA. OPS CHECK  GOOD. A/C OK FOR SERVICE. UNIT MAKER SIEMENS SAS.  MPN CGDU2200-00. MSN 657.

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