Squawk Box

November 2016 Issue

Circuit Breakers

The following information is derived from the FAA’s Service Difficulty Reports and Aviation Maintenance Alerts.

Pitot heat switch would not stay in the on position. On troubleshooting, the technician found circuit breaker/switch (p/n 35-38013263) to be at fault. AD 2008-13-17 had been completed 2427 flight hours prior. Recommend breaker manufacturer develop a more durable product or aircraft maker look for a different source for its circuit breakers.

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