# SDR 2015FA0000653

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 16, 2015
- Submitted: December 16, 2015
- Operation: General aviation
- Aircraft: [N864AF](https://openairdocs.org/aircraft/N864AF), registered now
- Make and model: Grob G 120A
- Registry model: [Grob G 120A](https://openairdocs.org/model/grob-werke-g-120a) (OpenAirDocs)
- Aircraft serial: 85004
- Aircraft time: 7,948 hours
- Engine: Lyc AEIO540D4D5
- Engine time: 749 hours
- Propeller: Hartzl HCC3YR
- System (JASC): [7430 · Ignition Switching](https://openairdocs.org/jasc/7430)
- Part: Ignition Switch
- Part number: 103572101
- Part serial: H10D
- Condition: Failed
- Part time: 1,252 hours, 1,252 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2015FA0000653

## Discrepancy

PILOT REPORTED SMOKE OUT OF IGNITION SWITCH DURING START UP.  INVESTIGATION FOUND THE STARTER SWITCH HAD INTERNALLY ARCED ACROSS THE CONTACTS.

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