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
Cracked
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 242XF TOP SURFACE IS CRACKED.<[01] IDENTIFIED PANEL MATERIAL IAW SRM 53-00-50-0I-1 FIG 6 TABLE 6.<BR>FOUND DAMAGE TO BE OUT OF ALLOWABLE LIMITS IAW SRM 53-00-50-1A-1 PARA 4.B.<BR>DAMAGE WILL BE REPAIRED IAW SRM 53-00-50-2R-6.<BR>REMOVED DAMAGED SKIN AND CORE; CLEANED REPAIR AREA; FABRICATED CORE PLUG USING BMS 8-124 C4 T5 G9 LOT#1287137 AND UPPER SURFACE REPAIR PLIES USING BMS 9-3H2 LOT#1522395-2 IAW SRM 53-00-50-2R-6 PARA 3.C-G(1).<BR>OK TO INSTALL.;;[06] CURED REPAIR WITH THERMOMETER ID:ATS2208 CAL DUE 10/2023; SANDED CORE PLUG CONTOUR TO SURFACE; CLEANED REPAIR AREA AND FABRICATED LOWER SURFACE REPAIR PLIES IAW SRM 53-00-50-2R-6 PARA 3.I(1)-K(1).<BR>OK TO INSTALL.;[07] INSPECTED AND VERIFIED CORRECTIVE ACTION 6. OKAY TO INSTALL LOWER SURFACE REPAIR PLIES.<BR><BR>VERIFIED MEASUREMENTS TABLE.;[08] INSTALLED LOWER SURFACE PLIES USING BMS 8-201TY4 LOT#1524543-1; VACUUM BAGGED; LEAK CHECK GOOD WITH VACUUM GAUGE ID:ATS2441 CAL DUE 08/2023 IAW SRM 53-00-50-2R-6 PARA 3.K(1)-L(1).;[09] INSPECTED AND VERIFIED CORRECTIVE ACTION 8.;[10] CURED REPAIR PLIES USING THERMOMETER ID:ATS2208 CAL DUE 10/2023 ; UNBAGGED AND TRIMMED EXCESS MATERIAL IAW SRM 53-00-50-2R-6 PARA 3.M(1)

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