# SDR AMTA200600512

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 13, 2006
- Submitted: August 22, 2006
- Operation: Air carrier
- Aircraft: N518AT
- Make and model: Boeing 757-23N
- Registry model: [Boeing 757-23N](https://openairdocs.org/model/boeing-757-23n) (OpenAirDocs)
- Aircraft serial: 27974
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Shutoff Valve
- Part number: 32143067
- Part serial: P191C
- Condition: Unserviceable
- Location: Left
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AMTA200600512

## Discrepancy

LT DUCT PRESS FLUCTUATES BETWEEN 10 AND 60 PSI ON TAXI.  PACKS ON, SMOOTHES OUT WHEN T/O POWER APPLLIED.  REMOVED AND REPLACED PRSOV ON NR 1 ENG IAW MM AND SECURED SENSE LINE FOR THE PRSOV.  PERFORMED ADJ AND TEST IAW MM.  OPS CHECK NORMAL.  (K)

---
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.