# SDR AMTA200600740

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 23, 2006
- Submitted: December 28, 2006
- Operation: Air carrier
- Aircraft: [N317TZ](https://openairdocs.org/aircraft/N317TZ), registered now
- Make and model: Boeing 737-83N
- Registry model: [Boeing 737-83N](https://openairdocs.org/model/boeing-737-83n) (OpenAirDocs)
- Aircraft serial: 28246
- Engine: Cfmint CFM567B22
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Control Valve
- Part number: 32895625
- Part serial: 7743
- Condition: Unserviceable
- Location: Engine
- Part time: 12,785 hours, 5,599 cycles
- Stage of operation: DE
- 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/AMTA200600740

## Discrepancy

HAD LT BLEED AIR TRIP OFF IN DESCENT, RESET OK IAW CHECKLIST.  REPLACED PRECOOLER CONTROL VALVE.  (K)

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