Service difficulty report · Web · Boeing 7377BD

Difficulty date
March 15, 2023
Submitted
March 30, 2023
Operation
Air carrier
Aircraft
N556WN
Make and model
Boeing 7377BD
Aircraft serial
33936
Aircraft time
37,398 hours, 21,958 cycles
Part
Web
Condition
Corroded
Location
Zn 100 Fus Lower
Stage of operation
IN
How discovered
9
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

WHILE PERFORMING OK TO CIC FOUND CORROSION ON THE INTERNAL PRESSURE BULKHEAD WEB SKIN AFT OF BS 1016 TO 2' UP THE PRESSURE WEB FROM RBL5-LBL4. REMOVED CORROSION ON THE INTERNAL PRESSURE BULKHEAD WEB SKIN AFT OF BS 1016 TO 2' UP THE PRESSURE WEB FROM RBL5-LBL4 IAW SRM 51-10-02-0G-0 ; ORIGINAL THICKNESS IS 0.040' IAW SRM 53-80-08-0I-1. VERIFIED CORROSION REMOVAL NOTED SEVERAL OUT OF ROUND HOLES BL 0- RBL 5. REPAIRED PER EA 23-153-00918 WITH FOLLOW-UP INSPECTIONS SCHEDULED IN EA 23-153-00918-DTI.

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