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

FWD FLOOR PANEL 221CF UPPER SKIN HAS AN AREA OF PULLED STRANDS. (MARKED)<[01] IDENTIFIED PANEL 221CF MATERIAL IAW SRM 53-00-50-0I-1 FIG. 2 TABLE 2.<BR><BR>DAMAGE EXCEEDS ALLOWABLE DAMAGE LIMITS IAW SRM 53-00-50-1A-1 PAR. 4.F.<BR><BR>REMOVED 15EA INSERTS IAW SRM 53-00-50-2R-1 PAR 3.B.<BR><BR>REMOVED 16' X 16' AREA OF DAMAGED PLIES ON UPPER SURFACE AND CLEANED AREA IAW SRM 53-00-50-2R-1 PARA 3.A-C AND PARA 3.E-F.;[02] VALIDATED REPAIR PER SRM 53-00-50-2R-1;[03] VERIFIED CORRECTIVE ACTIONS 1 AND 2<BR><BR>VERIFIED MEASUREMENTS TABLE<BR><BR>VALIDATED REPAIR PER SRM 53-00-50-2R-1;[04] CLEANED REPAIR AREA AND FABRICATED REPAIR PLIES USING BMS 9-3 ST1581 LOT#1522395-2 IAW SRM 53-00-50-2R-1 PARA 3.K(1).<BR>OK TO INSTALL REPAIR PLIES;[05] INSPECTED AND VERIFIED CORRECTIVE ACTION 4. OKAY TO INSTALL REPAIR PLIES.;[06] INSTALLED REPAIR PLIES USING BMS 8-201 TY6 LOT#1524651-1; VACUUM BAGGED; LEAK CHECK GOOD USING VACUUM GAUGE ID:ATS2798 DUE:10/23 AND SET TO CURE UNDER HEAT LAMP IAW SRM 53-00-50-2R-1 PARA 3.K(1);L(1) AND M(1).

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