# SDR 97ZZZX5067

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 22, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N454MA](https://openairdocs.org/aircraft/N454MA), registered now
- Make and model: Mtsbsi MU2B60
- Aircraft serial: 1535SA
- System (JASC): [7922 · Engine Oil Temperature Regulator](https://openairdocs.org/jasc/7922)
- Part: Bypass Valve
- Part number: 016A4702221
- Condition: Failed
- Location: Temp Regulator
- Part time: 335 hours
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZX5067

## Discrepancy

BYPASS VALVE UNIT INOPERATIVE.  OIL TEMPERATURE REDLINES ON GROUND.  REPLACED WITH NEW UNIT, CORRECTED PROBLEM.

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