Service difficulty report · Plate · Grob G120A

Difficulty date
May 13, 2005
Submitted
June 1, 2005
Operation
General aviation
Aircraft
N863AF
Make and model
Grob G120A
Aircraft serial
85003
Part
Plate
Part number
120A3115
Condition
Debonded
Location
Rudder Spar
Part time
1,997 hours
Component
Rudder · Grob
Component part number
120A3100
Stage of operation
IN
How discovered
C
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

DURING FLEET - WIDE INSPECTION OF AIRCRAFT, TECH FOUND EXCESSIVE MOVEMENT BETWEEN RUDDER AND RUDDER LEVER ASSY. FURTHER INSPECTION SHOWED DISBONDING BETWEEN THE RUDDER SPAR AND THE RUDDER LEVER ASSY SPACER PLATE. PROBABLE CAUSE APPEARS TO BE EXCESSIVE FLEXING OF THE SPAR OR IMPROPER BONDING. (SPAR AND SPACER ARE COMPOSITE MATERIAL) THE SPAR MAY NOT BE RIGID ENOUGH IN THIS AREA. RECOMMENDATION AT THIS TIME IS TO INCREASE STRENGTH/RIGIDITY OF THE SPAR AND IMPROVED BONDING METHOD.

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