# SDR 2011FA0000739

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 10, 2011
- Submitted: November 10, 2011
- Operation: General aviation
- Aircraft: [N5519A](https://openairdocs.org/aircraft/N5519A), registered now
- Make and model: Beech F33A
- Registry model: [Beech F33A](https://openairdocs.org/model/beech-f33a) (OpenAirDocs)
- Aircraft serial: CE1337
- Aircraft time: 21,256 hours, 21,256 cycles
- Engine: Cont IO520BB
- Engine time: 1,358 hours, 1,358 cycles
- Propeller: Hartzl PHCC3YF1
- System (JASC): [3397 · Light System Wiring](https://openairdocs.org/jasc/3397)
- Part: Circuit Breaker
- Part number: 35380132101
- Condition: Failed
- Location: Zone 100
- Part time: 2,008 hours, 8,030 cycles
- Stage of operation: TX
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2011FA0000739

## Discrepancy

PILOT REPORTED NAV LIGHT ON WHEN CIRCUIT BREAKER/SWITCH IN THE OFF POSITION & OFF WHEN CIRCUIT BREAKER WAS IN THE ON POSITION.  MX FOUND CIRCUIT BREAKER TO BE AT FAULT.  AD 2008-13-17 HAD BEEN COMPLETED 2007.5 FLIGHT HOURS PRIOR.

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