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 241AAF HAS MULTIPLE AREAS OF PULLED STRANDS.<[01] IDENTIFIED FLOOR PANEL 241AAF MATERIAL IAW SRM 53-00-50-0I-1 FIGURE 6 TABLE 6. FLOOR PANEL 241AAF DAMAGE EXCEEDS ALLOWABLE DAMAGE LIMITS IAW SRM 53-00-50-1A-1 PARAGRAPH 4.F. FLOOR PANEL UPPER SURFACE DAMAGE IS BEYOND ECONOMICAL REPAIR AND CAN BE REPLACED IAW SRM 53-00-50-2R-0 PARAGRAPH 1.A (NOTE). <BR><BR>FABRICATED AFT FLOOR PANEL 241AAF USING BMS4-17 TY6 LOT#1522265-1. INSTALLED INSERTS USING BMS5-107 LOT#AK2KP8383K AND CURED USING THERMOMETER ID:ATS2208 CAL DUE: 10/2023. INSTALLED TAPE GUA1057-1 LOT# 1515311-2; AND PART MARKED AS REQUIRED. IAW SRM 53-00-50-2R-0 PARAGRAPH 5.S(1); AND BAC DWG 147A5810 ID:008.<BR><BR>AFT FLOOR PANEL 241AAF UPPER SURFACE WAS DAMAGED BEYOND ECONOMICAL REPAIR AND WAS REPLACED BY FABRICATING A NEW PANEL IAW SRM 53-00-50-2R-0; AND BAC DWG 147A5810 ID:008.;[02] INSPECTED AND VERIFIED CORRECTIVE ACTION 1.;[03] ATTACHED CURE SHEET TO THIS FAULT RECORD.;[04] VERIFIED MEASUREMENTS TABLE.<BR><BR>JOB COMPLETE.

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