SDR HYI2006F00006

Service difficulty report · Uplock Switch · Cessna 402C

Difficulty date: December 2, 2005
Submitted: February 7, 2006
Operation: Air carrier
Aircraft: N618CA
Make and model: Cessna 402C
Aircraft serial: 402C0620
Engine: Cont TSIO520*
System (JASC): 3230 · Landing Gear Retraction/Extension System
Part: Uplock Switch
Part number: 602EN556B
Condition: Failed
Location: Lg Sys
Component: Uplock Hook Asy
Stage of operation: CL
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

CREW REPORTED GEAR UNSAFE LIGHT REMAINED ON WITH GEAR HANDLE IN UP POSITION, MAINTENANCE ATTEMPTED TO REMOVE AND REPLACE THE RT UPLOCK MICROSWITCH, 2 SWITCHES FAILED (BAD FROM STOCK) BEFORE INSTALLING A SERVICEABLE UNIT, GEAR SWING CHECKS, OK. AIRCRAFT RELEASED FOR SERVICE. (K)

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