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 400-420
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 BS400 - BS420 RBL22 WL157. / REMOVED; FABRICATED AND INSTALLED NEW FLOOR TO SIDEWALL SUPPORT AT FCB BS. 400-BS 420 RBL 22; W.L. 157 ITEM # BAC 1496-444 #7075T62 LOT #1435481-1 IAW SRM 53-00-53-1A-2; SRM 51-40-02-0G-0; SRM 51-40-05-0G-0; DWG #143A7501; SRM 51-20-01-0G-0 STEP 5; SOPM 20-41-02 STEP 3.; DWG #143A7500 57319U 05-10-20

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