# SDR IPXA2026101937503

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 14, 2026
- Submitted: October 20, 2026
- Operation: Air carrier
- Aircraft: [N438UP](https://openairdocs.org/aircraft/N438UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 25469
- Aircraft time: 32,017 hours, 20,945 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Control Valve
- Part number: 62594610
- Part serial: 024C4575
- Condition: Faulted
- Location: Cabin Pressure
- Stage of operation: DE
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2026101937503

## Discrepancy

CABIN ALTITUDE EICAS MSG AT FL300. IN ADDITION TO CABIN ALTITUDE FAULT. RT PACK FLOW CONTROL AND SHUTOFF VALVE WAS REMOVED AND REPLACED. OPERATIONAL TESTED BOTH LEFT AND RIGHT PACKS. MOVED PACK TEMPERATURE CONTROLS TO LOW AND HIGH SETTINGS. SYSTEM OPERATIONALLY TEST FUNCTIONAL. NO DISCREPANCIES NOTED. REVERSED DMP. OK TO CONTINUE SERVICE.

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