# SDR 2023FA0000264

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 16, 2023
- Submitted: May 16, 2023
- Operation: General aviation
- System (JASC): [2400 · Electrical Power System](https://openairdocs.org/jasc/2400)
- Part: Alternator
- Part number: 101050C
- Condition: Burned Out
- Location: Engine
- Part time: 3 hours, 2 cycles
- Stage of operation: CR
- How discovered: V
- Nature of condition: H
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2023FA0000264

## Discrepancy

3 FLIGHT HOURS AFTER INSTALLATION THE ALTERNATOR BURNT THE MAIN LUG COMPLETELY OFF MELTING THE 6 AWG WIRE TERMINAL. MANUFACTURER INVESTIGATED AND REPORTED NUT LOST TORQUE AND THEY HAVE SEEN THIS HAPPEN MANY TIMES. NUT HAS NO LOCKING FEATURES. THE USE OF A LOCKING NUT WOULD HAVE PREVENTED THIS FAILURE WHICH HAS POTENTIAL TO CREATE AN IN FLIGHT FIRE AND OR LOSS OF ELECTRICAL POWER.

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