# SDR IPXA2026020173379

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 1, 2026
- Submitted: February 6, 2026
- Operation: Air carrier
- Aircraft: [N143UP](https://openairdocs.org/aircraft/N143UP), registered now
- Make and model: Airbus A300 F4-622R
- Registry model: [Airbus A300 F4-622R](https://openairdocs.org/model/airbus-a300-f4-622r) (OpenAirDocs)
- Aircraft serial: 0826
- Aircraft time: 28,507 hours, 17,573 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Loop
- Part number: RCGSK1055
- Part serial: 129
- Condition: Faulted
- Location: Zone 200
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2026020173379

## Discrepancy

DIVERTED,  EMERGENCY DECLARED,  MID 2 MAIN DECK LOOP FAULT DURING CRUISE FOLLOWED CHECKLIST,MID 2 TURNED OFF SHORTLY THEREAFTER MAIN DECK CARGO MID 2 SMOKE WARNING & ECAM. INFLIGHT DIVERT TO STL. ++REMOVED AND REPLACED MID 2 UPPER SMOKE DETECTION CONTROL UNIT 50WU2 IAW AMM 26-19-34/401. OPS CHECK GOOD. THIS CLEARS MEL 26-197-01-1. PLACARD REMOVED.

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