# SDR DALA2026020200793

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 2, 2026
- Submitted: February 2, 2026
- Operation: Air carrier
- Aircraft: [N650DL](https://openairdocs.org/aircraft/N650DL), registered now
- Make and model: Boeing 757232
- Aircraft serial: 24390
- Aircraft time: 93,302 hours, 41,375 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Relief Valve
- Part number: 1036423
- Part serial: 653329
- Condition: Damaged
- Location: Zone 100
- Part time: 103,597 hours, 12,135 cycles
- Stage of operation: CL
- 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/DALA2026020200793

## Discrepancy

DIVERTED TO ATL DUE TO PRESSURIZATION PROBLEM & CABIN ALTITUDE WARNING.  FOUND UPPER POSITIVE PRESSURE RELIEF VALVE OPEN WITH INSULATION STUCK IN VALVE. REPLACED POSITIVE PRESSURE RELIEF VALVE AND REMOVED LOOSE INSULATION AROUND VALVE IAW AMM. PERFORMED CABIN HULL LEAK CHECK, SINGLE PACK CONFIDENCE CHECK, AND OUTFLOW VALVE TESTS.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.