# SDR M3XA2017081205

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 12, 2017
- Submitted: August 14, 2017
- Operation: Air carrier
- Aircraft: [N762MT](https://openairdocs.org/aircraft/N762MT), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 54612
- Aircraft time: 907 hours, 3,008 cycles
- System (JASC): [6340 · Rotor Drive Indicating System](https://openairdocs.org/jasc/6340)
- Part: Pressure Switch
- Part number: 214040806003
- Condition: Defective
- Location: Transmission
- Part time: 907 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/M3XA2017081205

## Discrepancy

ON SHORT FINAL TO THE HOSPITAL THE PILOT HAD A TRANSMISSION OIL PRESSURE WARNING LIGHT ILLUMINATE ON THE CAUTION WARNING PANEL.  HE DECIDED TO DIVERT TO THE LOCAL AIRPORT, WHERE HE LANDED WITHOUT INCIDENT WITH A PATIENT ONBOARD, WHICH WAS TRANSPORTED BY GROUND.  THE MECHANIC TROUBLESHOT THE SYSTEM AND DID A 20 MINUTE GROUND RUN WITHOUT FURTHER INDICATION.  THE ACFT WAS GOING TO RETURN TO THE BASE AND WHEN THE PILOT RAN THE ACFT UP AND PICKED IT UP TO A HOVER THE TRANSMISSION OIL PRESSURE WARNING LIGHT FLICKERED.  THE ACFT WAS FURTHER TROUBLESHOT AND WAS DETERMINED THAT THE OIL PRESSURE SWITCH WAS INOP.  TRANSMISSION OIL PRESSURE SWITCH WAS REPLACED ON 8-13-17 WITH A SATISFACTORY CHECK F

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