Service difficulty report · Spar Cap · Beech 95B55

Difficulty date
September 28, 2005
Submitted
October 6, 2005
Operation
General aviation
Aircraft
N1071T
Make and model
Beech 95B55
Aircraft serial
TC2002
Engine
Cont IO470L
Propeller
Hartzl BHCC2YF2
System (JASC)
5711 · Wing Spar
Part
Spar Cap
Part number
00011001316
Condition
Corroded
Location
Wings
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

DURING AN ANNUAL INSPECTION, SOME CORROSION WAS FOUND IN THE AREA OF THE RT WING TIE DOWN ASSY, UPON FURTHER INVESTIGATION AN AREA OF APPROXIMATELY 8 INCHES IN LENGTH WITH SEVERE INTERGRANULAR CORROSION WAS DISCOVERED ON THE LOWER SPAR CAP POSSIBLY CAUSED BY DISSIMILAR METAL OF THE TIE DOWN ASSY AND THE LOWER SPAR CAP. THIS AC HAD SUFFERED THE SAME TYPE OF CORROSION ON THE LT WING AT EXACTLY THE SAME LOCATION. (K)

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