Service difficulty report · Attach Fitting · Cessna 402C

Difficulty date
August 16, 2021
Submitted
August 17, 2021
Operation
Air carrier
Aircraft
N494BC
Make and model
Cessna 402C
Aircraft serial
C4020308
Aircraft time
36,976 hours, 22,829 cycles
Part
Attach Fitting
Part number
082255047
Condition
Corroded
Location
Lt Wing
Part time
36,976 hours, 22,829 cycles
Stage of operation
IN
How discovered
V
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 MAINTENANCE A SPOT OF CORROSION WAS VISUALLY IDENTIFIED ON THE LEFT HAND UPPER FORWARD WING ATTACH FITTING. IT IS LOCATED ON THE BOTTOM FACE OF THE UPPER HORIZONTAL LEG OF THE FITTING AND MEASURES APPROXIMATELY .555 INCHES LONG, .300 INCHES WIDE, AND .020 INCHES DEEP. THIS CORROSION IS CONSISTENT WITH OTHERS FOUND USING A VISUAL INSPECTION TECHNIQUE. THIS FITTING WILL BE REPLACED USING NEW PARTS.

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