# SDR 96ZZZX2142

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 21, 1996
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N9779J
- Make and model: Piper PA-32R-301
- Registry model: [Piper PA-32R-301](https://openairdocs.org/model/piper-pa-32r-301) (OpenAirDocs)
- Aircraft serial: 3213024
- System (JASC): [2434 · DC Generator-Alternator](https://openairdocs.org/jasc/2434)
- Part: Alternator
- Part number: ALU8421LS
- Condition: Wrong Part
- Location: Dc System
- Part time: 1,243 hours
- Component: Prestolite
- 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/96ZZZX2142

## Discrepancy

DURING THE COURSE OF AN ANNUAL INSPECTION, DISCOVERED A 24-VOLT ALTERNATOR WAS INSTALLED ON A 12-VOLT SYSTEM.  PART INSTALLED WAS ALU-8421LS, 24-VOLT, 70-AMP.  ACCORDING TO THE PARTS BOOK PER SERIAL NUMBER OF AIRCRAFT, UNIT SHOULD BE A P/N ALY6421, 12-VOLT, 60-AMP ALTERNATOR.

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