# SDR AMTA200600539

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 3, 2006
- Submitted: September 15, 2006
- Operation: Air carrier
- Aircraft: N308TZ
- Make and model: Boeing 737-83N
- Registry model: [Boeing 737-83N](https://openairdocs.org/model/boeing-737-83n) (OpenAirDocs)
- Aircraft serial: 28244
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Shutoff Valve
- Condition: Malfunctioned
- Location: Bleed Air Sys
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AMTA200600539

## Discrepancy

LEFT AND RIGHT DUCT PRESSURE SPLIT R-DUCT PRESSURE 10-15 PSI LOWER THAN L DUCT AT CRUISE.  REMOVED AND REPLACED PRSOV, AND HP REGULATOR.  PERFORMED BLEED AIR CHECK PER FIM 36-10-00-810-804, L/R BLEED PRESS`S MATCH AT ALL TESTED N1 SPEEDS.  (M)

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