Service difficulty report · Actuator · Cessna 560XL

Difficulty date
September 18, 2010
Submitted
September 20, 2010
Operation
Air carrier
Aircraft
N693QS
Make and model
Cessna 560XL
Aircraft serial
5605657
Aircraft time
3,524 hours, 2,745 cycles
Part
Actuator
Part number
W724800
Condition
Worn
Location
Nlg
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

UNSAFE GEAR ANNUNCIATOR ILLUMINATED AFTER GEAR RETRACTION. TROUBLESHOT TO NOSE STRUT EXTENSION GREATER THAN 9.10 INCHES, IT IS 9.25 INCHES. WHEN RETRACTED UPLOCK ROLLERS ON NLG NOT FULLY SEATED IN UPLOCK HOOK. UPLOCK SWITCH IS AT FULL EXTENSION FOR ADJUSTMENT, BARELY MAKES CONTACT WITH ROLLERS. BEARINGS FROZEN TO STRUT. BOTH UPPER AND LOWER TRUNNION/STRUT BEARINGS CAME APART DURING REMOVAL. R & R BOTH BEARINGS IN TRUNNION. RESEALED NOSE STRUT AND SERVICED. NEW MEASUREMENT FOR NOSE STRUT EXTENSION IS 9.05 " WITHIN LIMITS. NOSE UPLOCK RIGGED GOOD. ALL OPS AND LEAK CHECKED NORMAL. WORK DONE IAW MM 32-20-00 AND CMM 32-20-01.

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