Service difficulty report · Web · Boeing 7377H4

Difficulty date
June 1, 2021
Submitted
June 16, 2021
Operation
Air carrier
Aircraft
N732SW
Make and model
Boeing 7377H4
Aircraft serial
27864
Aircraft time
74,727 hours, 43,976 cycles
Part
Web
Condition
Corroded
Location
Bs 847-856
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 ACB FLOOR-TO-SIDEWALL SUPPORT WEB; BS 847-856; RBL 22; WL 160 ; / APPLIED A CHEMICAL CONVERSION COATING IAW SRM 51-20-01-0G-0 AND PRIMED NEW WEB IAW SOPM 20-41-02 AND DWG 146A8322; OK TO INSTALL;BLENDED CORROSION ON ACB FLOOR TO SIDEWALL SUPPORT WEB BS 847-856; RBL 22; WL 160. BLENDED 1'X1'X.020'; ORIGINAL THICKNESS IS .063'. FOUND TO BE OUT OF LIMITS IAW SRM 53-60-15-1A-1.;EDITED MEASUREMENT TABLE;INSTALLED ACB FLOOR TO SIDEWALL SUPPORT WEB BS847 - BS856; RBL22; WL160 IAW SRM 51-40-02-0G-0 AND DWG 146A8321;LOCATED AND DRILLED NEW ACB FLOOR TO SIDEWALL SUPPORT WEB AT BS847 - BS856; RBL22; WL160 IAW SRM 51-40-05-0G-0 AND DWG 146A8321;OK TO INSTALL.;RECEIVED WEB IN FROM O.S.S; VERIFIED HEAT TREAT PER BAC5602 ON PO# 826173-SWA AND VERIFIED FABRICATION PER DWG 146A8322-12 ON PO# 826173-SWA;REMOVED SUPPORT WEB FROM BS 847-856; RBL 22; WL 160 IAW SRM 51-40-02-0G-0.

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