Service difficulty report · Spar Cap · Cessna 402C

Difficulty date
June 12, 2014
Submitted
June 14, 2014
Operation
Air carrier
Aircraft
N121PB
Make and model
Cessna 402C
Aircraft serial
402C0507
Aircraft time
32,421 hours
System (JASC)
5711 · Wing Spar
Part
Spar Cap
Part number
52920292
Condition
Corroded
Location
Rt Wing
Part time
12,402 hours
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

SERVICE KIT SK402-47, CONCURRENT WITH AD2005-12-13 & MEB02-5, WAS INSTALLED ON 07/24/2003 AT AFTT 20,019.7 AS TERMINATING ACTION FOR AD2005-05-52. EDDY CURRENT PRESCRIBED IN SID 57-10-16 REVEALED MULTIPLE AREAS OF SUBSURFACE CORROSION IN LWR FWD SPAR CAP STRAP, PN 5292029-1, WHICH WERE NOT EVIDENT DURING DETAILED VISUAL INSPECTION. CORRECTIVE ACTION WILL BE TO REPLACE CORRODED PARTS WITH NEW. RESULT OF INSPECTION WILL ALSO BE REPORTED AS DIRECTED IN SID PROGRAM OUTLINED CHAPTER 5-13-01 OF AMM D2527-10-13.

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