Service difficulty report · Support · Boeing 7377H4

Difficulty date
January 22, 2023
Submitted
February 10, 2023
Operation
Air carrier
Aircraft
N407WN
Make and model
Boeing 7377H4
Aircraft serial
29817
Aircraft time
71,833 hours, 42,592 cycles
Part
Support
Condition
Cracked
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

MAIN CABON CENTER WING BOX FLOOR SUPPORT BREAK CRACKED @ RBL-1 STA 540 WATER LINE 182<[01] REMOVED CABIN FLOOR PANEL 231UF FOR ACCESS AS PER 53-21-00-000-801.;[02] REMOVED MAIN CABIN CENTER WING FLOOR SUPPORT BREAK AT RBL-1 STA-540 IN REFERENCE B-737-700 SRM 51-40-02-0G-0.;[03] LOCATED AND DRILLED NEW FLOOR SUPPORT BREAK IN ACCORDANCE WITH B-737-700 SRM 51-40-05-0G-0.;[04] VERIFIED LOCATED AND DRILLED.<BR>OK TO INSTALL;[05] INSTALLED NEW FLOOR SUPPORT BREAK IN REFERENCE B-737-700 SRM 51-40-02-0G-0.;[06] VERIFIED INSTALLATION. <BR>OK TO INSTALL PANEL;[07] INSTALLED CABIN FLOOR PANEL 231UF AS PER B-737-700 AMM 53-21-00-400-801.;[08] VERIFIED INSTALLATION

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