Service difficulty report · Web · Boeing 7377H4

Difficulty date
April 28, 2023
Submitted
May 25, 2023
Operation
Air carrier
Aircraft
N416WN
Make and model
Boeing 7377H4
Aircraft serial
32453
Aircraft time
70,967 hours, 42,001 cycles
Part
Web
Condition
Cracked
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

CRACK ON HORIZONTAL PRESSURE DECK WEB AT STA 663+9.5; RBL 41; WL 202.5. APPROXIMATE LENGTH: .75'<[01] HORIZONTAL PRESSURE DECK WEB AT 663+9.5; RBL41; WL202.5 FOUND TO BE OUT LIMITS AND WILL BE REPAIR IAW SRM 53-40-51-2R-2. VERIFIED SRM 53-40-51-2R-2 IS APPLICABLE REPAIR. REMOVED HORIZONTAL PRESSURE DECK WEB AT BS 663-675; CUTOUT DAMAGE AT RBL38- RBL60 IAW SRM 53-40-51-2R-2 STEP 4.C.(3).;[06] FABRICATED REPAIR PARTS ITEM 1 DOUBLER FROM 2024T3 0.080' C LOT # 1376063-1 ITEM 2 STIFFENER (7EA) LOT # 1474979-1 AND ITEM 3 WEB LOT # 1507920-1 APPLIED CHEMICAL CONVERSION COAT;PRIMED ALL I.A.W SRM 53-40-51-2R-2 STEP 4.E-K;[11] CORRECTIVE ACTION 6 SHOULD READ<BR>FABRICATED REPAIR PARTS ITEM 1 DOUBLER FROM 2024T3 0.080' C LOT # 1376063-1 ITEM 2 STIFFENER (7EA) LOT # 1474979-1 AND ITEM 3 WEB FROM 2024T3 0.063' LOT # 1507920-1 APPLIED CHEMICAL CONVERSION COAT;PRIMED ALL I.A.W SRM 53-40-51-2R-2 STEP 4.E-K;[12] ADDED ITEM 3 MATERIAL DESCRIPTION;[13] INSTALLED REPAIR PARTS AND STRUCTURE COMMON TO THE REPAIR I.A.W SRM 53-40-51-2R-2 STEP 4.L-N;

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