# SDR DALA2023051904032

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 17, 2023
- Submitted: May 19, 2023
- Operation: Air carrier
- Aircraft: [N397DA](https://openairdocs.org/aircraft/N397DA), registered now
- Make and model: Boeing 737832
- Aircraft serial: 30537
- Aircraft time: 66,024 hours, 30,753 cycles
- Engine: Cfmint CFM567B262
- Engine time: 69,787 hours, 27,713 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Valve
- Part number: 1296663
- Part serial: 7864
- Condition: Inoperative
- Location: #1
- Part time: 68,974 hours, 26,063 cycles
- Stage of operation: CR
- 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/DALA2023051904032

## Discrepancy

SHIP 3727 -DIV- TO DTW DUE TO LEFT BLEED TRIP AND AUTOPILOT INOP. CORRECTIVE ACTION: MAINTENANCE REPLACED PRECOOLER CONTROL VALVE AND 390 SENSOR PER B737 AMM 36-12.

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