Service difficulty report · Web · Boeing 7377H4

Difficulty date
December 3, 2021
Submitted
January 4, 2022
Operation
Air carrier
Aircraft
N234WN
Make and model
Boeing 7377H4
Aircraft serial
32502
Aircraft time
52,359 hours, 31,270 cycles
Part
Web
Condition
Corroded
Location
Bs 440-500
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CORRSION FWD CARGO BAY THRESHOLD SUBWEB BS 440+10-BS 500 RBL 29 ; / [01] EVALUATED CORROSION AT ALL LOCATIONS; FOUND DEEPEST LOCATION TO BE AT BS 440+10 RBL 29 WL 156. FOUND 0.015 REMOVED FROM ORIG 0.045 IN 1'X1' AREAS FOUND TO BE OUT OF LIMITS PER SRM 53-30-15-1A-1 USING DIAL DEPTH GAUGE ATS2678 S/N UNKNOWN; [02] VERIFIED EVALUATED CORROSION AT ALL LOCATIONS; FOUND DEEPEST LOCATION TO BE AT BS 440+10 RBL 29 WL 156. FOUND 0.015 REMOVED FROM ORIG 0.045 IN 1'X1' AREAS FOUND TO BE OUT OF LIMITS PER SRM 53-30-15-1A-1 USING DIAL DEPTH GAUGE ATS2678 S/N UNKNOWN; [03] LOCATED; DRILLED; AND INSTALLED NUTPLATES ON NEW FCB SUB THRESHOLD WEB BS440-BS492; RBL 29. PER DWG 143A8330; SRM 51-40-05-0G-0; AND SRM 51-40-02-0G-0.; [04] VERIFIED CORRECTIVE ACTION 3. <BR><BR>PART TO BE INSTALLED ON TTG8Q004E4MG

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