Service difficulty report · Switch · Cessna 402B

Difficulty date
February 9, 2000
Submitted
April 14, 2000
Operation
Air carrier
Make and model
Cessna 402B
Aircraft time
7,828 hours
Engine
Cont TSIO520E
Part
Switch
Part number
719983
Condition
Shorted
Location
Cockpit
Component
Combustion Heater · 8259
Stage of operation
CR
How discovered
O
Nature of condition
B
Precautionary procedure
H

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

(CAN) WHILE IN CRUISE FLIGHT, THE CREW NOTICED THE PANEL LIGHTS FLICKER FOLLOWED BY A BURNING SMELL AND COMBUSTION HEATER FAILURE. AFTER LANDING, THE MAINTENNANCE CREW FOUND THE HEATER DUCT SWITCH HAD OVERHEATED AND FAILED.

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