# SDR 99ZZZX3598

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 26, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N4873G](https://openairdocs.org/aircraft/N4873G), registered now
- Make and model: Cessna 172N
- Registry model: [Cessna 172N](https://openairdocs.org/model/cessna-172n) (OpenAirDocs)
- Aircraft serial: 17273420
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Bolt
- Part number: DOFF10300BR
- Condition: Broke
- Location: Alternator
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX3598

## Discrepancy

PENN YAN CONVERION WAS COMPLETED 1-22-97 AT TT 2,954 HRS.  ON 4-28-99 AT 2,987 = 33 HRS IN SERVICE, AN ALTERNATOR THROUGH-BOLT WAS FOUND BROKEN.  UNIT REPAIRED AT PENN YAN RE-INSTALLED.  ON 8-7-99 AT 3,066 = 112:00 HRS IN SERVICE, THROUGH-BOLTS BROKEN AGAIN.  UNIT REPLACED THIS TIME WITH S/N 202511 PENN YAN OVERHAULED UNIT.

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