Service difficulty report · Web · Boeing 7378H4

Difficulty date
May 4, 2022
Submitted
May 25, 2022
Operation
Air carrier
Aircraft
N8633A
Make and model
Boeing 7378H4
Aircraft serial
36905
Aircraft time
26,974 hours, 12,433 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 THRESHOLD AT RBL 24 BS 440+3; RBL 28 BS 460+10; RBL 28 BS 460+13; RBL 28 BS 460+18; RBL 28 BS 480; RBL 23 BS 480+10. EVALUATED CORROSION AT ALL LOCATIONS; FOUND DEEPEST LOCATION TO BE AT BS 460+10' REMOVED 0.015' IN A AREA OF 1'X1' ORIGINAL THICKNESS 0.045' FOUND TO BE OUT OF LIMITS PER SRM 53-30-15-1A-1. VERIFIED SRM 53-30-15-1A-1 IS APPLICABLE. VERIFIED FWD CARGO BAY THRESHOLD WEB CORROSION REWORK IS OUT OF LIMITS PER SRM 53-30-15-1A-1. LOCATED AND DRILLED NEW SUB THRESHOLD WEB BS 440 TO 492 PER SRM 51-40-05-0G-0 AND DWG 143A8330. INSTALLED THRESHOLD WEB ON FWD CARGO BAY BS 440 TO 492 PER SRM 51-40-02-0G-0 AND DWG 143A8330

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