# SDR HEEA0011977

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 12, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N3911L
- Make and model: Bell 412
- Registry model: [Bell 412](https://openairdocs.org/model/bell-412) (OpenAirDocs)
- Aircraft serial: 33023
- Engine: Allsn 250C47B
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Housing Assy
- Part number: 3026669
- Condition: Mismanufactured
- Location: Eng Oil
- Part time: 80 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/HEEA0011977

## Discrepancy

MISMANUFACTURED, SEAT FOR RELIEF VALVE NOT FINISHED.  OIL PRESSURE SLOW TO COME UP AND LOW AT 100%.  REMOVED FROM ENGINE S/N CPPS-TB0040 AT ENGINE TOTAL TIME 80:00.  REPLACEMENT HOUSING AND BUILD UP PARTS WERE RECEIVED AGAINST OUR RO#8077 AND SO#S:600971 AND 00032722, INVOICE 546987, 547438, 547665 AND 548081.

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