Service difficulty report · Web · Boeing 7378H4

Difficulty date
July 1, 2022
Submitted
July 25, 2022
Operation
Air carrier
Aircraft
N8641B
Make and model
Boeing 7378H4
Aircraft serial
60085
Aircraft time
27,233 hours, 12,566 cycles
Part
Web
Condition
Corroded
Location
Fwd Cargo
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; STA 440+1 TO STA 480+12; RBL 23 TO RBL 29.5; WL 156. / [01] EVALUATED CORROSION AT ALL LOCATIONS; FOUND DEEPEST LOCATION TO BE AT BS 470 REMOVED 0.015' IN A AREA OF 1'X1' ORIGINAL THICKNESS 0.040' FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2 USING ATS TOOL ID ATS2678 EXP 4/2023;09] INSTALLED FWD CARGO BAY NEW SUB-THRESHOLD WEB 654A0003-58 AT BS 440 TO 492 PER SRM 51-40-02-0G-0; DWG143A8122; DWG 143A8120 AND DWG 143A8330.;[10] CORRECTION ACTION: INSTALLED FWD CARGO BAY SUB-THRESHOLD WEB AT BS 440 TO 492 PER SRM 51-40-02-0G-0; DWG143A8122; DWG 143A8120 AND DWG 143A8330.;[11] VERIFIED CORRECTIVE ACTION 8-10

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