# SDR IPXA2026070971659

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 9, 2026
- Submitted: July 9, 2026
- Operation: Air carrier
- Aircraft: [N148UP](https://openairdocs.org/aircraft/N148UP), 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: 0831
- Aircraft time: 28,060 hours, 17,151 cycles
- System (JASC): [2161 · Cabin Temperature Controller](https://openairdocs.org/jasc/2161)
- Part: Controller
- Part number: 3964323
- Part serial: UP81660
- Condition: Failed
- Location: Zone 100
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2026070971659

## Discrepancy

EMERGENCY DECLARED AT CRUISE 340,  NR 2 A/C PACK FAILED,  RAN ECAM NR 1 A/C PACK ALSO FAILED.  INITIATED DESCENT TO 10,000 FT,  DURING DESCENT BOTH PACKS INTERMITTENTLY WOULD OPERATE THEN FAIL.  AT 10,000 FT,  BOTH PACKS ARE OPERATING.  REPLACED CONTROLLER 37HK IAW AMM 21-61-16/401, TESTED GOOD ALSO ACCOMPLISHED CABIN PRESSURE LEAK CHECK IAW AMM 05-53-00/001 CHECKED GOOD.

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