Service difficulty report · Sidewall Support · Boeing 7377H4

Difficulty date
April 24, 2026
Submitted
May 20, 2026
Operation
Air carrier
Aircraft
N258WN
Make and model
Boeing 7377H4
Aircraft serial
32516
Aircraft time
64,221 hours, 38,671 cycles
Part
Sidewall Support
Part number
146A750251
Condition
Corroded
Location
Zone 100
Stage of operation
IN
How discovered
V
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

ACB FLOOR TO SIDEWALL SUPPORT R/H BS 727-767 HAS AREAS OF CORROSION. REMOVED AND REPLACED SIDEWALL SUPPORT BS 727 TO 767, RBL 24, WL 158 IAW SRM 51-40-02-0G-0 AND DWG 146A7502, REV -. REJECTION OF STEP 6 ITEM 3: FLOOR TO SIDEWALL SUPPORT AT RBL 24 HAS 1EA BAD RIVET AT BS 727A, 2EA BAD RIVETS AT BS 727B, 1EA BAD RIVET AT BS 727C, 1EA BAD RIVET AT BS 747, AND 1EA BAD RIVET AT BS 767+1. REMOVED AND INSTALLED FASTENERS AT BS 727A, 2EA BAD RIVETS AT BS 727B, 1EA BAD RIVET AT BS 727C, 1EA BAD RIVET AT BS 747, AND 1EA BAD RIVET AT BS 767+1 IAW SRM 51-40-02.

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