Service difficulty report · Web · Boeing 7377H4

Difficulty date
March 14, 2022
Submitted
April 11, 2022
Operation
Air carrier
Aircraft
N468WN
Make and model
Boeing 7377H4
Aircraft serial
33858
Aircraft time
58,378 hours, 34,580 cycles
Part
Web
Condition
Corroded
Location
Fuselage
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 BS 348 FRAME CLOSE OUT WEB LBL 62 WL 209. / [01] REMOVED CORROSION ON 348 FRAME CLOSEOUT WEB; LBL 62; WL 209. MAX MATERIAL REMOVED WAS .019' 1' BY 2' FROM .071'. OUT OF LIMITS PER SRM 53-10-15-1A-1; SRM 51-10-02-0G-0.;[02] VERIFIED CORRECTIVE ACTION 1.;[03] REMOVED BS 348 FRAME CLOSE OUT WEB LBL 62 WL 209 IAW SRM 51-40-02-0G-0;[04] FABRICATED NEW CLOSE OUT WEB; MADE FROM 7075T6#0.071; LOT# 1478276-1 IAW SRM 51-40-05-0G-0 AND DWG 141A8163;[05] APPLIED A CHEMICAL CONVERSION COATING TO THE NEW CLOSE OUT WEB IAW DWG 141A8163 AND SRM 51-20-01-0G-0; OK TO PRIME;[06] VERIFIED ITEMS 4 AND 5 CORRECTIVE ACTIONS. OK TO PRIME.;[07] APPLIED PRIMER TO THE NEW CLOSE OUT WEB IAW DWG 141A8163 AND SOPM 20-41-02;[08] APPLIED A TOPCOATBTO NEW CLOSE OUT WEB IAW AMM 51-21-73; OK TO INSTALL;[09] VERIFIED ITEMS 7;8 CORRECTIVE ACTIONS.;[10] OK TO INSTALL.;[11] INSTALLED NEW BS 348 FRAME CLOSE OUT WEB LBL 62 WL 209 IAW SRM 51-40-02-0G-0 AND DWG 141A8190;[12] VERIFIED ITEM 11 CORRECTIVE ACTIONS.;[13] VERIFIED ITEM 11 CORRECTIVE ACTIONS.

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