# SDR ASAA0956354

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 1, 2009
- Submitted: August 4, 2009
- Operation: Air carrier
- Aircraft: [N558AS](https://openairdocs.org/aircraft/N558AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35177
- Aircraft time: 11,886 hours, 3,389 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Sense Line
- Part number: 1613583
- Condition: Blown
- Location: Bleed Air Sys
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA0956354

## Discrepancy

PRESSURIZATION DUCT SPLIT IN FLIGHT CLIMBING THROUGH 2000 FT L25 R45.  AT FL 350 L28 R44.  AT FL 370 L28 R42.  ACCOMP PNEUMATIC SYS T/S REF M/M 36 00 00 101 NR 1 ENG.  FOUND THE CONT PRESS SENSE LINE FOR THE PRSOV/450 STAT BLOWN OUT.  REPLACED CONT PRESS SENSE LINE, LEAK CHECK GOOD REF M/M 36 11 00 101.  ALL OPS NORMAL REF M/M 36 11 00 700 801.

---
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.