Service difficulty report · Floor Support · Boeing 7377H4

Difficulty date
April 4, 2023
Submitted
April 28, 2023
Operation
Air carrier
Aircraft
N412WN
Make and model
Boeing 7377H4
Aircraft serial
29818
Aircraft time
71,376 hours, 42,351 cycles
Part
Floor Support
Condition
Cracked
Location
Zn 200 Fus Top
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

PASSENGER CABIN FLOOR SUPPORT IS CRACKED BS540 LBL1 WL208.<[01] NO ALLOWABLE DAMAGE FOUND ON SRM PART TO BE REMOVED AND REPLACED I.A.W SRM 51-10-02-0G-0 PAR 9.C REPLACEMENT OF THE PART;[02] LOCATED AND DRILLED NEW PANEL BREAK BS540 LBL1-LBL24 WL208 I.A.W BOEING DRAWING 143A0060 AND SRM. 51-40-05-OG-0. OK TO INSTALL.;[03] REMOVED DAMAGE PANEL BREAK BS540 LBL1-LBL24 WL208 I.A.W SRM 51-40-02-0G-0;[04] VERIFIED CORRECTIVE ACTIONS 1-3 AND MEASUREMENT TABLE.<BR>OK TO INSTALL;[05] INSTALLED NEW PANEL BREAK BS540 LBL1-LBL24 WL208 I.A.W BOEING DRAWING 143A0060 AND SRM. 51-40-02-OG-0.;[06] VERIFIED CORRECTIVE ACTIONS 5 AND MEASUREMENT TABLE.

More about the Boeing 737-7H4