Service difficulty report · Stringer · Boeing 7377H4

Difficulty date
November 23, 2021
Submitted
December 20, 2021
Operation
Air carrier
Aircraft
N409WN
Make and model
Boeing 7377H4
Aircraft serial
27896
Aircraft time
67,505 hours, 40,058 cycles
Part
Stringer
Condition
Corroded
Location
Fuselage
Stage of operation
UK
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

AFT OF FWD CARGO COMP. STRINGER 23 R/H AT BULKHEAD STA 540 IS CORRODED ; / [01] REMOVED FASTENERS FROM STRINGER 26L AND STA 540 PER B737-700 SRM 51-40-02-0G-0; EVALUATED CORRODED AREA AND FOUND OUT OF LIMITS PER B737-700 SRM 53-00-03-1A-1 FIG 103; ORIGINAL MATERIAL .045'; MATERIAL LOSS .045'; REMAINING MATERIAL .000'.[30] STARTING REPAIR PARTS INSTALLATION AS PER REF B737-700 SRM 53-00-03-2R-1 AND EA 21-153-03629-WIP1; [31] OK TO INSTALL CLIP AND SHEAR TIES REMOVED ON STEP 2.; [32] INSTALLED REPAIR PARTS AT FWD CARGO R/H SIDE STR 23R STA 500D-540 AS REF. B737-700 SRM 53-00-03-2R-1 AND EA 21-153-03629 WIP1; [33] INSTALLED SHEAR TIES AND CLIP AT FWD CARGO R/H STA 520 IAW SRM 51-40-02-0G-0.

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