SDR CA040616006

Service difficulty report · Uplock Hook · Swrngn SA227*

Difficulty date: June 15, 2004
Submitted: December 3, 2004
Operation: General aviation
Make and model: Swrngn SA227*
Aircraft time: 14,489 hours
Propeller: Mcauly 4HFR34C652
System (JASC): 3230 · Landing Gear Retraction/Extension System
Part: Uplock Hook
Condition: Lack Of Lube
Location: Mlg
Stage of operation: CL
How discovered: O
Nature of condition: J
Precautionary procedure: A

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

What was found

AFTER THE AIRCRAFT TOOK OFF AND THE CREW SELECTED GEAR UP THE 'UNSAFE' GEAR WARNING LIGHTS REMAINED ON. THE CREW SELECTED DOWN AND OBTAINED 3 GREEN LIGHTS AND RETURNED TO BASE. MAINTENANCE WAS ABLE TO REPEAT THE PROBLEM ON THE GROUND ON GEAR SWINGS. THE UPLOCK HOOKS WERE NOT FULLY ENGAGING ON THE UPLOCK ROLLERS. THE MECHANISMS WERE CLEANED AND LUBRICATED AND THE GEAR SWINGS WERE SERVICEABLE. AIRCRAFT RETURNED TO SERVICE.