Service difficulty report · Floor Panel · Boeing 7377H4

Difficulty date
May 25, 2023
Submitted
June 29, 2023
Operation
Air carrier
Aircraft
N960WN
Make and model
Boeing 7377H4
Aircraft serial
36675
Aircraft time
38,108 hours, 23,248 cycles
Part
Floor Panel
Part number
UNKNOWN
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

FLOOR PANEL 241SF UPPER SKIN HAS AREAS OF PULLED STRANDS.<[01] IDENTIFIED FLOOR PANEL 241SF MATERIAL IAW SRM 53-00-50-0I-1 FIGURE 5 TABLE 5. MOST OF THE UPPER SURFACE HAS LARGE AREAS OF PULLED STRANDS OR DELAMINATION. AREAS EXCEED ALLOWABLE DAMAGE LIMITS 53-00-50-1A-1 PARAGRAPH 4.F. FLOOR PANEL 241SF DAMAGE TO UPPER SURFACE IS BEYOND ECONOMICAL REPAIR AND MAY BE REPLACED IAW 53-00-50-2R-0 PARAGRAPH 1.A NOTE.<BR><BR>ROUGH CUT A NEW FLOOR PANEL USING BMS4-23 TY2 LOT#1525675-1. LOCATED INSERT HOLES AND COUNTERBORED HOLES IAW SRM 53-00-50-2R-0 PARAGRAPH 4.A(2); AND PARAGRAPH 5.S(1)(A-D); AND BAC DWG 146A5810 ID:0465.;[02] INSTALLED INSERTS USING BMS5-107 LOT# AK2KP8383K-1 AND CURED USING THERMOMETER ID: ATS2209 CAL DUE: 10/2023. APPLIED TAPE BMS 8-283 LOT# 0CN000057073; AND PART MARKED AS REQUIRED. IAW SRM 53-00-50-2R-0 PARAGRAPH 5.S(1)(E-H) AND BAC DWG 146A5810 ID:0465.;[03] VERIFIED CORRECTIVE ACTIONS 1 AND 2<BR><BR>VERIFIED MEASUREMENTS TABLE;[04] CURE SHEET UPLOADED.<BR><BR>JOB COMPLETE;[05] JOB COMPLETE.

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