# SDR ASAA0955689

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 19, 2009
- Submitted: May 21, 2009
- Operation: Air carrier
- Aircraft: [N557AS](https://openairdocs.org/aircraft/N557AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35176
- Aircraft time: 11,312 hours, 3,290 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Sense Line
- Part number: 1613583
- Condition: Leaking
- Location: Bleed Air Sys
- Stage of operation: NR
- 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/ASAA0955689

## Discrepancy

LEFT A/C PACK READS 20 25 PSI BELOW RIGHT PACK IN CLIMB AND CRUISE. GROUNDED YES. LEAK CHECKED ALL SENSE LINES FOUND LINE FROM PRSOV LEAKING. REMOVED AND REPLACED LINE REF MM 36 11 04.

---
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.