# SDR 99ZZZX2754

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 14, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N2369P
- Make and model: Cessna 172R
- Registry model: [Cessna 172R](https://openairdocs.org/model/cessna-172r) (OpenAirDocs)
- Aircraft serial: 17280657
- System (JASC): [7714 · Engine RPM Indicating System](https://openairdocs.org/jasc/7714)
- Part: Indicator
- Part number: S33291
- Condition: Stuck
- Location: Tachometer
- Part time: 4 hours
- Stage of operation: NR
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX2754

## Discrepancy

TACHOMETER NEEDLE STUCK AT ZERO, THEN JUMPED TO 1,700 RPM AND STUCK.  NEEDLE WOULD DROP TO ZERO AGAIN IF GLASS WAS TAPPED.  NEW TACHOMETER, SN 0852, CORRECTED PROBLEM.

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