# SDR 2007FA0001056

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 13, 2007
- Submitted: December 4, 2007
- Operation: General aviation
- Aircraft: N24442
- Make and model: Cessna 172R
- Registry model: [Cessna 172R](https://openairdocs.org/model/cessna-172r) (OpenAirDocs)
- Aircraft serial: 17280862
- Engine: Lyc IO360A1A
- System (JASC): [2450 · AC Power Distribution System](https://openairdocs.org/jasc/2450)
- Part: Circuit Breaker
- Part serial: W31X2M1G10
- Condition: Inoperative
- Part time: 251 hours
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2007FA0001056

## Discrepancy

PILOT SQUAWKED ON INTERMITTENT SWITCH.  THE SWITCH WAS DISASSEMBLED AND INSPECTED.  THE BONDED INTERNAL CONDUCTOR HAD SEPARATED FROM CONTACTOR.  A TOTAL OF 20 SWITCHES IN OUR FLEET, HAVE ALREADY BEEN REPLACED.  UPON INSPECTION, NUMEROUS SWITCHES HAD SIMILAR PROBLEMS INTERNALLY.  (K)

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