Service difficulty report · Lug · Cessna 421C

Difficulty date
August 22, 2010
Submitted
November 1, 2010
Operation
Air carrier
Aircraft
N87561
Make and model
Cessna 421C
Aircraft serial
421C0017
Engine
Cont GTSIO520L
Propeller
Mcauly 3FF32C501
Part
Lug
Part number
571304034
Condition
Broken
Location
Nlg Actuator
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

ACFT SUFFERED NOSE GEAR COLLAPSE NEAR THE END OF ITS ROLL OUT AFTER LANDING. PART OF UPPER MOUNTING BRACKET FOR NOSE GEAR ACTUATOR BROKE FREE OF AIRFRAME RELEASING DOWNLOCK CAUSING NOSE TO DROP. BOTH PROPS MADE CONTACT WITH PAVEMENT STOPPING ENGINES WHILE TURNING AT IDLE. PILOT WAS ONLY SOUL ON BOARD AND WAS UNHURT. BOTH EARS OF UPPER ACTUATOR ATTACH/PIVOT POINT LUG WERE BROKEN OFF. EXPOSED CLEAN METAL AT BREAK INDICATED FRESH DAMAGE WITH NO APPARENT CORROSION. IN ADDITION TO PROP STRIKE DAMAGE, ACFT SUFFERED DAMAAGE TO LOWER NOSE SECTION FWD OF STATION. 43, TRANSPONDER ANTENNA PITOT TUBES, PREVIOUSLY MENTIONED DAMAGE TO UPPER ACTUATOR MOUNTING LUG AND ASSOCIATED STRUCTURE, RADOME, AND NOSE GEAR DOORS. NOSE GEAR FORK AND ASSOC STRUCTURES WILL BE INSPECTED BUT APPEAR UNDAMAGED.

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