Service difficulty report · None · Boeing 7377H4

Difficulty date
August 23, 2022
Submitted
September 27, 2022
Operation
Air carrier
Aircraft
N489WN
Make and model
Boeing 7377H4
Aircraft serial
33855
Aircraft time
57,460 hours, 34,246 cycles
Part
None
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 PASSENGER CABIN FLOOR BEAM UPPER SURFACE AT STA 727A+18; LBL 23; WL 208. / [01] REMOVED CORRODED FILLER FOR LONGITUDINAL BEAM BS 727A+18; LBL 23; WL 208 PER SRM 51-40-02; FABRICATED REPLACEMENT FROM 7075T6-C#.090' LOT# 1482311 AS SHOWN ON EA 1-757-9666 REV-; APPLIED CHEMICAL CONVERSION COATING AND PRIMER PER SRM 51-20-01 AND AMM 51-21-72 OK TO INSTALL;[02] CORRECTED LOT# 1482311-1;[03] VERIFIED CORRECTIVE ACTION 1.;[04] INSTALLED REPLACEMENT FILLER PER SRM 51-40-02 AS SHOWN ON EA 1-757-9666 REV-;[05] VERIFIED CORRECTIVE ACTION 4.;[06] VERIFIED MEASUREMENT TABLE.

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