Service difficulty report · Sidewall Support · Boeing 7377H4

Difficulty date
April 30, 2022
Submitted
June 9, 2022
Operation
Air carrier
Aircraft
N477WN
Make and model
Boeing 7377H4
Aircraft serial
33988
Aircraft time
60,414 hours, 35,826 cycles
Part
Sidewall Support
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 FCB FLOOR TO SIDEWALL SUPPORT AT FASTENER HOLES COMMON TO FLOOR AND SIDEWALL PANEL INSTALLATION. BS480+11 TO BS500D; LBL21; WL156 / [01REMOVED CORROSION FROM FCB L/H FLOOR TO SIDWALL SUPPORT AT BS500+14 MEASURED 2.2"L X 1.2"W AND 0.0045" DEEP FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2 REMOVED CORROSION FROM FCB L/H FLOOR TO SIDWALL SUPPORT AT BS500+18 MEASURED 1.7"L X 0.8"W AND 0.005" DEEP FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2 REMOVED CORROSION FROM FCB L/H FLOOR TO SIDWALL SUPPORT AT BS500A+1.5 MEASURED 2.1"L X 0.8"W AND 0.0045" DEEP FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2 REMOVED CORROSION FROM FCB L/H FLOOR TO SIDWALL SUPPORT AT BS500C+1.5 MEASURED 2.2"L X 0.8"W AND 0.005" DEEP FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2 [04] LOCATED AND DRILLED NEW SIDE PLATE FROM BAC1496-444 7075T62; <BR> LOT. 1487676-1 IAW SRM 51-40-05-0G-0 AND DWG 143A7501 REV:B AT BS 396 TO BS 500D LBL 21; WL 156;[06] LOCATED AND DRILLED REAPIR SPLICE FOR SIDE PLATE IAW SRM 53-00-53-2R-6; BETWEEN BS 480 TO BS 500; LBL 20-25 WL156<BR> FROM BAC1496-444#7075T62 LOT. 1487676-1;

More about the Boeing 737-7H4