# SDR KBM2005F00083

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 2, 2005
- Submitted: May 26, 2005
- Operation: Air carrier
- Aircraft: [N677JM](https://openairdocs.org/aircraft/N677JM), registered now
- Make and model: Cessna 501
- Registry model: [Cessna 501](https://openairdocs.org/model/cessna-501) (OpenAirDocs)
- Aircraft serial: 5010052
- Aircraft time: 11,484 hours
- Engine: Allsn 250C20B
- System (JASC): [6240 · Main Rotor Indicating System](https://openairdocs.org/jasc/6240)
- Part: Indicator
- Part number: 8DJ150WAD1
- Part serial: R0449
- Condition: Failed
- Location: Dual Tach
- Part time: 1,216 hours
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/KBM2005F00083

## Discrepancy

DUAL TACH, NEEDLE WILL NOT PROVIDE READING.  REMOVED AND REPLACED. (K)

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