Service difficulty report · Floor Panel · Boeing 7377H4

Difficulty date
May 13, 2023
Submitted
June 20, 2023
Operation
Air carrier
Aircraft
N429WN
Make and model
Boeing 7377H4
Aircraft serial
33658
Aircraft time
66,602 hours, 39,316 cycles
Part
Floor Panel
Condition
Pulled
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

FLOOR PANEL 231ZF UPPER SURFACE HAS PULLED STRANDS.<[01] IDENTIFIED FLOOR PANEL 231ZF MATERIAL IAW SRM 53-00-50-0I-1 FIGURE 4 TABLE 4 AND BAC DWG 144A5810 ID: 0160. DAMAGE TO UPPER SURFACE EXCEEDS ALLOWABLE DAMAGE LIMITS IAW SRM 53-00-50-1A-1 PARAGRAPH 4.F. FLOOR PANEL DAMAGE IS BEYOND ECONOMICAL REPAIR AND MAY BE REPLACED IAW SRM 53-00-50-2R-0 PARAGRAPH 1.A NOTE.<BR><BR>ROUGH CUT FLOOR PANEL AND LOCATED INSERT HOLES USING BMS4-17 TY6 LOT#1526676-1 IAW SRM 53-00-50-2R-0 PARAGRAPH 1.A NOTE; AND PARAGRAPH 4.A TABLE 204; AND PARAGRAPH 5.S(1)(A-D).;[02] INSTALLED INSERTS USING BMS5-107 LOT#AK2KP8383K-1 AND CURED USING THERMOMETER ID: ATS2208 CAL DUE: 10/2023. APPLIED TAPE BMS8-283 LOT# OCN056838; AND PART MARKED FLOOR PANEL AS REQUIRED IAW SRM 53-00-50-2R-0 PARAGRAPH 5.S(1)(D-H); AND BAC DWG 1144A5810 ID: 0160.;[03] VERIFIED CORRECTIVE ACTIONS 1 AND 2<BR><BR>VERIFIED MEASUREMENTS TABLE;[04] FLOOR PANEL WAS REPLACED WITH NEW FABRICATED FROM RAW STOCK IAW SRM 53-00-50-2R-0 AND DRAWING 144A5810.<BR><BR>UPLOADED CURE SHEETS.<BR><BR>JOB COMPELTE.;[05] CORRECTION FOR LINE 2; 'DWG 1144A5810 ID: 0160.' SHOULD READ 'DWG 144A5810 ID: 0160.';[06] VERIFIED CORRECTIVE ACTIONS 4 AND 5

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