Service difficulty report · Spar Cap · Cessna 402C

Difficulty date
September 11, 2020
Submitted
September 11, 2020
Operation
Air carrier
Aircraft
N810BW
Make and model
Cessna 402C
Aircraft serial
402C0279
Aircraft time
22,360 hours, 11,903 cycles
System (JASC)
5711 · Wing Spar
Part
Spar Cap
Part number
512204123
Condition
Corroded
Location
Lt Wing
Part time
22,360 hours, 11,903 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 DAMAGE WAS IDENTIFIED ON BOTTOM FACE OF THE HORIZONTAL LEG OF THE LEFT HAND LOWER OUTBOARD SPAR CAP (P/N: 5122041-23). THIS DAMAGE IS LOCATED BETWEEN LWS 203.21 AND 212.46. AT IT'S DEEPEST THIS DAMAGE MEASURES .027 INCHES DEEP. THIS MEASUREMENT EXCEEDS THE MAXIMUM ALLOWABLE REMOVAL LIMIT OUTLINED IN MEB95-11R1 SECTION 3. THIS CAP WILL BE REMOVED AND REPLACED USING NEW PARTS.

More about the Cessna 402C