# SDR CA010703038

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 14, 2001
- Submitted: July 5, 2001
- Operation: General aviation
- Make and model: Cessna 305A
- Registry model: [Cessna 305A](https://openairdocs.org/model/cessna-305a) (OpenAirDocs)
- Aircraft time: 11,261 hours
- Engine: Cont O47011B
- System (JASC): [2434 · DC Generator-Alternator](https://openairdocs.org/jasc/2434)
- Part: Retainer
- Part number: 6682
- Condition: Failed
- Location: Alternator
- Part time: 76 hours
- Component: Alternator, Skytronics, 7565T1
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA010703038

## Discrepancy

(CAN) ALTERNATOR REMOVED FROM A/C ENGINE FOR INST ON A NEW ENGINE FOR THIS A/C. NO PILOT RPTED LOSS OF CHARGE BEFORE ENGINE WAS STOPPED FOR HIS TBO. SMALL PIECES OF METAL & RUBBER FELL OFF THE ACCESSORIES CASE UPON REMOVAL OF ALTNR. LOOKING CLOSELY TO ALTNR SPLINE GEAR & DRIVE SHAFT, EVIDENCE OF DAMAGES WERE FOUND. RETAINING CUP & RUBBER BUSHINGS WERE COMPLETELY SHREDED. SPLINE GEAR LUGS WERE ALSO BROKEN OFF & THIS PARTICULAR ALTNR, ROTOR SHAFT SHEARED. RETAINING CUP & RUBBER BUSHINGS ARE MOUNTED BETWEEN SPLINE GEAR DRIING SHAFT & THEROTOR SHAFTOF ALTERNATOR. THIS INST IS DESIGNED TO SHEAR OFF & PREVENT DAMAGES TO ENGINE IN CASE WHERE AN ALTNR SHAFT

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