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 232RF UPPER SURFACE HAS PULLED STRANDS.<[01] IDENTIFIED FLOOR PANEL 232RF MATERIAL IAW SRM 53-00-50-0I-1 FIGURE 4 TABLE 4. DAMAGE EXCEEDS ALLOWABLE DAMAGE LIMITS IAW SRM 53-00-50-1A-1 PARAGRAPH 4.F. DAMAGE TO FLOOR PANEL IS BEYOND ECONOMICAL REPAIR AND MAY BE REPLACED BY FABRICATING A NEW PANEL IAW SRM 53-00-50-2R-0 PARAGRAPH 1.A (NOTE).<BR><BR>FABRICATED NEW FLOOR PANEL AND LOCATED INSERT HOLES USING BMS4-17 TYVI LOT# 1526676 IAW SRM 53-00-50-2R-0 PARAGRAPH 5.S(1) (A-C)AND 4.A(1); AND BAC DWG 144A5810 ID:0004;[02] INSTALLED ALL INSERTS USING BMS5-107 LOT#AK2KP8383K-1 AND CURED USING HEAT LAMP AND THERMOMETER ATS2208 CAL DUE DATE 10/2023 THEN PART MARKED PANEL IAW SRM 53-00-50-2R-0 PARA 5S AND BOEING DWG 144A5810-4.;[03] VERIFIED CORRECTIVE ACTIONS 1 AND 2<BR><BR>VERIFIED MEASUREMENTS TABLE;[04] PANEL WAS REPLACED WITH NEW FABRICATED FROM RAW STOCK IAW SRM 53-00-50-2R-0 AND DRAWING 144A5810. <BR><BR>UPLOADED CURE SHEET. <BR><BR>JOB COMPLETE.;[05] VERIFIED CORRECTIVE ACTION 4

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