# SDR EVCA00017

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 10, 2011
- Submitted: August 11, 2011
- Operation: Air carrier
- Aircraft: [N325AE](https://openairdocs.org/aircraft/N325AE), registered now
- Make and model: Bell 206L-4
- Registry model: [Bell 206L-4](https://openairdocs.org/model/bell-helicopter-textron-canada-206l-4) (OpenAirDocs)
- Aircraft serial: 52009
- Aircraft time: 5,651 hours, 31,292 cycles
- System (JASC): [6240 · Main Rotor Indicating System](https://openairdocs.org/jasc/6240)
- Part: Shaft
- Part number: 5D4407
- Condition: Sheared
- Location: Tach Generator
- Part time: 5,651 hours, 31,292 cycles
- Component: Tach Generator, Bell
- Component part number: 206076373001
- Stage of operation: NR
- How discovered: O
- Nature of condition: F, G
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/EVCA00017

## Discrepancy

THE DRIVE ADAPTOR SPLINE CONNECTION BETWEEN THE ROTOR TACH GENERATOR AND THE TRANSMISSION OIL PUMP SHEARED, RESULTING IN LOSS OF HYD PRESSURE AND ROTOR SPEED INDICATION.

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