Service difficulty report · Support · Boeing 7377H4

Difficulty date
June 4, 2020
Submitted
August 17, 2021
Operation
Air carrier
Aircraft
N476WN
Make and model
Boeing 7377H4
Aircraft serial
32475
Aircraft time
55,307 hours, 32,813 cycles
Part
Support
Condition
Corroded
Location
Bs 500a-500d
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 FLOOR TO SIDEWALL SUPPORT AT FCB BS500A - BS500D RBL23 WL157. / REMOVED; FABRICATED; AND INSTALLED NEW FCB FLOOR TO SIDEWALL SUPPORT AT BS500A-500D RBL23; WL157 ITEM# BAC1496-444 #7075T62 LOT#1435481-1 IAW SRM 51-40-02-0G-0; SRM 51-10-02-0G-0; SRM 53-00-53-1A-2; STEP 4.A(2) FIG 103; SRM 51-40-05-0G-0; SRM 51-20-01-0G-0; STEP 5; SOPM; 20-41-02-STEP3; DWG# 143A7501; DWG#143A7500 57319U 05-10-20

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