# SDR 96ZZZX1373

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 24, 1996
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N114DS](https://openairdocs.org/aircraft/N114DS), registered now
- Make and model: Cessna 550
- Registry model: [Cessna 550](https://openairdocs.org/model/cessna-550) (OpenAirDocs)
- Aircraft serial: 5500397
- System (JASC): [7714 · Engine RPM Indicating System](https://openairdocs.org/jasc/7714)
- Part: Tach Generator
- Part number: 32005
- Condition: Improper Part
- Location: Lt Eng N1 Tach
- Part time: 376 hours
- Stage of operation: IN
- Nature of condition: W
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/96ZZZX1373

## Discrepancy

THE LT ENGINE N1 TACHOMETER GENERATOR DID NOT RESEMBLE THE OTHER TACHOMETER GENERATORS.  INVESTIGATION FOUND VENDOR-ADVANCE POWER, INC., IS NOT AN APPROVED CESSNA/CITATION VENDOR FOR THIS PART.  ENGINE LOG BOOK SHOWS A CITATION PART NUMBER WHEN THIS UNIT WAS INSTALLED.  THIS UNIT WAS BLACK IN COLOR AND SMALLER IN DIAMETER THAN THE APPROVED UNITS.

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