Service difficulty report · Structure · Boeing 7377H4

Difficulty date
November 3, 2021
Submitted
December 3, 2021
Operation
Air carrier
Aircraft
N206WN
Make and model
Boeing 7377H4
Aircraft serial
34011
Aircraft time
52,876 hours, 31,083 cycles
Part
Structure
Condition
Corroded
Location
Fuselage
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

RT OVERWING EMERGENCY EXIT CUTOUT STRUCTURE IS CORRODED ON THE LWR SILL BS 619 - 638, RBL71, WL221. REMOVED RT LOWER SILL FLAPPER AND LOWER SILL SUPPORT ANGLE IAW SRM 51-40-02-0G-0. REMOVED FASTENERS ON THE FWD, MID AND AFT SILL RETAINERS IAW SRM 51-40-02-0G-0. REMOVED CORROSION AND FOUND TO BE WITHIN LIMITS PER SRM 53-40-15-1A-1. APPLIED CHEMICAL CONVERSION COATING AND PRIMER TO BLENDED AREAS IAW SRM 53-40-15-1A-1 STEPS 2.C.(2)(3). INSTALLED FASTENERS AND LOWER SILL SUPPORT ANGLE IAW SRM 51-40-02-0G-0, AND DWG 144A8201. REINSTALLED THE LOWER SILL FLAPPER IAW SRM 51-40-02-0G-0.

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