# SDR DALA2026090905060

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 9, 2026
- Submitted: September 10, 2026
- Operation: Air carrier
- Aircraft: [N934DZ](https://openairdocs.org/aircraft/N934DZ), registered now
- Make and model: Boeing 737-9GPER
- Registry model: [Boeing 737-9GPER](https://openairdocs.org/model/boeing-737-9gper) (OpenAirDocs)
- Aircraft serial: 37289
- Aircraft time: 28,312 hours, 21,609 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Actuator
- Part number: 5416744
- Part serial: 12575
- Condition: Faulted
- Location: Ram Air
- Part time: 103,116 hours, 11,761 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: B, G, I
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2026090905060

## Discrepancy

DIV/PRES/DE- DIVERTED TO LAS DUE TO LOSS OF CABIN PRESSURE.  FOUND CLAMP ON APU DUCT BOOT IN KEEL BEAM DAMAGED CAUSING LARGE LEAK. REPLACED CLAMP. REPLACED LT RAM AIR INLET ACTUATOR, FLEXIBLE SLEEVE AFT OF LT PACK CK VLV, SEALS BETWEEN LT CONDENSER AND REHEATER AND RT PACK FLOW CONTROL VALVE. PERFORMED LEAK CHECK AND PACK CONFIDENCE CHECKS, RESTOWED MASKS AND REPLACED O2 GENERATORS. ALL OPS AND LEAK CHECKS GOOD. (8779794) AIRCRAFT WAS GROUNDED.

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