Service difficulty report · Spar Cap · Cessna 402C

Difficulty date
November 6, 2019
Submitted
November 6, 2019
Operation
Air carrier
Aircraft
N1376G
Make and model
Cessna 402C
Aircraft serial
C4020271
Aircraft time
39,072 hours, 39,190 cycles
System (JASC)
5711 · Wing Spar
Part
Spar Cap
Part number
512204124
Condition
Corroded
Location
Rt Wing
Part time
39,072 hours, 39,190 cycles
Stage of operation
IN
How discovered
V
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 MAINTENANCE AN AREA OF CORROSION WAS IDENTIFIED ON THE RIGHT HAND LOWER AFT OUTBOARD SPAR CAP P/N: 5122041-24. THIS CORROSION IS LOCATED BETWEEN RIGHT WING STATIONS 223.21 AND 228.71, AND MEASURES 5.5 INCHES LONG BY .75 INCHES WIDE, AND HAS A MAX DEPTH OF .025 INCHES DEEP. THESE MEASUREMENTS ARE BEYOND THE REPAIRABLE LIMITS ALLOWED FOUND IN MEB 95-11R1. THIS CAP WILL BE REMOVED AND REPLACED WITH A NEW PART.

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