Service difficulty report · Web · Boeing 7377H4

Difficulty date
January 7, 2023
Submitted
February 7, 2023
Operation
Air carrier
Aircraft
N209WN
Make and model
Boeing 7377H4
Aircraft serial
32484
Aircraft time
59,684 hours, 35,490 cycles
Part
Web
Part number
NOTREPORTED
Part serial
NOTREPORTED
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

CORROSION ON FWD CARGO BAY DOOR CUT-OUT SUB-THRESHOLD WEB FROM STA 440+7 TO STA 480+10; RBL 26 TO RBL 29; WL 156.<[01] VERIFIED APPLICABILITY IAW SRM 53-30-15-0L-1 FOR IDENTIFICATION AND SRM 53-30-15-1A-1 FOR ALLOWABLE DAMAGE.<BR>REMOVED CORROSION ON FWD CARGO BAY DOOR CUT-OUT SUB-THRESHOLD WEB<BR>FROM STA 440+7 TO STA 480+10; RBL 26 TO RBL 29; WL 156.<BR><BR>EVALUATED BLENDED AREA L=1.600' W=1.900' ORIGINAL THICKNESS 0.045' REMAINING 0.039' LOSS 0.006'; MAX MAT REMOVED ALLOWED 0.004'; WAS FOUND OUT LIMITS IAW SRM 53-30-15-1A-1 TABLE 101 PARA 4G (2) FIG 103 DETAIL D.<BR>TOOL ID: ATS1672 S/N: 65092939 DUE:03/2023;[02] INSPECTED ACTION 1;[03] VERIFIED MEASUREMENT TABLE;[04] FABRICATED; LOCATED AND DRILLED NEW THRESHOLD WEB IAW SRM 51-40-05-0G-0 AND DWG 143A8330.;[05] THIS PART WILL BE INSTALLED WITH THE CUSTOMER CARD NBR: 5530-E-16461-NG (TTG8Q004GCTG);[06] VERIFIED CORRECTIVE ACTIONS #4 AND #5;[07] MEASUREMENT TABLE VERIFIED

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