# SDR DALA2024062606531

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 22, 2024
- Submitted: June 26, 2024
- Operation: Air carrier
- Aircraft: [N594NW](https://openairdocs.org/aircraft/N594NW), registered now
- Make and model: Boeing 757351
- Aircraft serial: 32994
- Aircraft time: 71,672 hours, 23,662 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Duct
- Condition: Loose
- Location: Rt A/C Pack
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B, A, G
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2024062606531

## Discrepancy

SHIP 5814 -DIV/PRESS/DE- DUE TO LOSS OF PRESSURIZATION AFTER RIGHT BLEED SHUT OFF PER QRH DUE TO RIGHT BLEED DUCT MESSAGE AND SUBSEQUENTLY LEFT BLEED TRIP. CORRECTIVE ACTION: T/S RT PACK BAY AND FOUND SEVERAL DUCTS LOOSE / LEAKING, REPLACED UPPER DUCT. RPLCD MULTIPLE PERRY SEALS ON COUPLERS, DUCT OFF PACK A/I VLV AND SENSE LINE OFF REHEATER TO ACM. T/S R/R #1 PRSOV, SENSE LINE AND FITTING AND INLET PRESS SENSE LINE @PRSOV. R/R HP VALVE AND HP PILOT. ALL ENG 1 BLEED CKS GOOD.

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