Service difficulty report · Flange · Boeing 7377H4

Difficulty date
December 15, 2023
Submitted
January 16, 2024
Operation
Air carrier
Aircraft
N235WN
Make and model
Boeing 7377H4
Aircraft serial
34630
Aircraft time
58,729 hours, 35,469 cycles
Part
Flange
Part number
UNKNOWN
Condition
Corroded
Location
Zn 100 Fus Lower
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 FWD R/H MOP SILL VERTICAL FLANGE FROM STA 294 TO STA 330; RBL 54 TO RBL 59; WL 208.9.<[01] REMOVED AND REPLACED ON FWD R/H MOPSILL BS 260 TO BS 360 RBL 59 IAW SRM 51-40-02 AND DWG 141A8310;[02] VERIFIED CORRECTIVE ACTION COMPLETE.<BR>VERIFIED MEASUREMENT TABLE.

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