Service difficulty report · Spar Cap · Cessna 402C

Difficulty date
March 15, 2019
Submitted
March 19, 2019
Operation
Air carrier
Aircraft
N2748Y
Make and model
Cessna 402C
Aircraft serial
C4020248
Aircraft time
33,742 hours, 36,447 cycles
System (JASC)
5711 · Wing Spar
Part
Spar Cap
Part number
512204122
Condition
Corroded
Location
Rt Wing
Part time
33,742 hours, 36,447 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 CORROSION WAS DISCOVERED ON THE RIGHT HAND UPPER AFT SPAR CAP (P/N: 5122041-22) AT APPROXIMATE RWS 223.71. THIS CORROSION MEASURES APPROXIMATELY .036 DEEP AND IS GREATER THAN THE MAXIMUM REMOVABLE LIMITS ALLOWED UNDER MEB95-11R1 SECTION 3. THIS CAP WILL BE REMOVED AND REPLACED USING NEW PARTS.

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