# SDR HEER201911071414

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 1, 2019
- Submitted: November 7, 2019
- Operation: Air carrier
- Aircraft: [N937PH](https://openairdocs.org/aircraft/N937PH), registered now
- Make and model: Skrsky S92A
- Aircraft serial: 920201
- Aircraft time: 6,324 hours
- Engine: Ge CT78A
- System (JASC): [6300 · Main Rotor Drive System](https://openairdocs.org/jasc/6300)
- Part: Switch
- Part number: MS274091A
- Condition: Inoperative
- Location: Mgb Bypass
- Stage of operation: CR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HEER201911071414

## Discrepancy

IN CRUISE FLIGHT AT 3000 FEET MGB BYPASS AND MGB PRESSURE LIGHTS ILLUMINATED.  REPLACED MGB BYPASS TOGGLE SWITCH, REPAIRED WIRE TO MAIN TRANSMISSION LOW OIL PRESSURE SWITCH CANNON PLUG @ P417.

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