Service difficulty report · Floor Panel · Boeing 7377H4

Difficulty date
April 22, 2023
Submitted
May 25, 2023
Operation
Air carrier
Aircraft
N959WN
Make and model
Boeing 7377H4
Aircraft serial
36674
Aircraft time
38,285 hours, 23,370 cycles
Part
Floor Panel
Condition
Pulled
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

AFT FLOOR PANEL 241ZF HAS AN AREA OF PULLED STRANDS.<[01] IDENTIFIED PANEL IAW SRM 53-00-50-0I-1 FIGURE 6. AREA OF PULLED STRAND DAMAGE IS BEYOND ALLOWABLE LIMITS IAW SRM 53-00-50-1A-1 PARAGRAPH 4.F AND WILL BE REPAIRED IAW SRM 53-00-50-2R-1. REMOVED AN APPROX. 42'X15' AREA OF DAMGED TOOLSIDE PLIES; ALSO REMOVED AN APPROX. 1' RADIAL AREA OF DAMGED BAGSIDE PLIES LOCATED 4.25' FROM THE LEADING EDGE AND ON THE OUTBOARD EDGE AND CLEANED PANEL WITH NO DISBOND OR CONTAMINATION NOTED; WORK PERFORMED IAW SRM 53-00-50-2R-1 PARAGRAPH 3.A-F.;FABRICATED THE REPAIR PLIES FROM BMS9-3 TYPE H3 LOT 1512777-1; WORK PERFORMED IAW SRM 53-00-50-2R-1 PARAGRAPH 3.H-J AND K.(1).(A). OK TO INSTALL THE REPAIR PLIES.;[06] INSPECTED AND VERIFIED CORRECTIVE ACTIONS 4 AND 5.;[07] OKAY TO INSTALL REPAIR PLIES.;[08] INSTALLED PLIES WITH BMS8-201 TYPE IV LOT 1524651-1; VACUUM BAGGED PLIES AND VERIFIED A SATISFACTORY 5X5 USING VACUUM GAUGE ID: ATS2798 DUE: 10/2023 IAW SRM 53-00-50-2R-1 PARAGRAPH 3.K.(1).(B-C) AND L.(1).;[09] INSPECTED AND VERIFIED CORRECTIVE ACTION 8.;

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