# SDR CALA2015041600289

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 16, 2015
- Submitted: April 16, 2015
- Operation: Air carrier
- Aircraft: [N75854](https://openairdocs.org/aircraft/N75854), registered now
- Make and model: Boeing 757324
- Aircraft serial: 32813
- Aircraft time: 41,905 hours, 14,253 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Valve
- Part number: 32143044
- Condition: Unserviceable
- Location: Bleed Air Sys
- Stage of operation: CR
- How discovered: O
- Nature of condition: M
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2015041600289

## Discrepancy

RIGHT ENG OVERHEAT PERFORMED CHECKLIST & LIGHT WENT OUT.  HAD A PNEUMATIC DUCT SURGE PRIOR TO THIS MSG & THE STATUS STRUT OVERHEAT MSG.  TROUBLE SHOT IAW FIM26-12-00, FOUND POSSIBLE LEAK DOWNSTREAM OF HPSOV.  LOCKED HPSOV IN CLOSED POSITION IAW MEL 3611R.  REF NR 4897732 & 44.0008 FOR W/P FAN AIR VLV & PRE-COOLER CONTROL VLV REPLACED.  OPERATIONS LEAK CHECKED OK.

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