Service difficulty report · Fitting · Cessna 402C

Difficulty date
November 5, 2025
Submitted
November 7, 2025
Operation
Air carrier
Aircraft
N26156
Make and model
Cessna 402C
Aircraft serial
402C0112
Aircraft time
30,630 hours, 26,388 cycles
Part
Fitting
Part number
529202921
Condition
Cracked
Location
Zone 400
Part time
15,713 hours, 14,706 cycles
Stage of operation
IN
How discovered
E
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 NDT INSPECTION AS NOTED IN SID 57-10-16, A CRACK WAS DISCOVERED ON THE LEFT HAND INBOARD NACELLE FITTING. (P/N: 5292029-21) THIS CRACK MEASURES APPROXIMATELY .100 INCHES LONG ON THE INBOARD LOWER LEG OF THE FITTING, AND IS CONSISTENT WITH OTHER CRACKS FOUND USING THE LIGHTED BORESCOPE INSPECTION TECHNIQUE (TEXTRON MEL54-02R2) TO SATISFY REQUIREMENT OF AD2017-10-09. THIS FITTING WILL BE REPLACED USING NEW PARTS.

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