Service difficulty report · Floor Panel · Boeing 7377H4

Difficulty date
March 22, 2023
Submitted
April 25, 2023
Operation
Air carrier
Aircraft
N957WN
Make and model
Boeing 7377H4
Aircraft serial
41528
Aircraft time
38,518 hours, 23,626 cycles
Part
Floor Panel
Condition
Broken
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

FWD CABIN FLOOR PANEL 221BF AFT O/B CORNER (TANG) IS BROKEN<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 3EA INSERTS TO FACILITATE REPAIR IAW SRM 53-00-50-2R-6 PARA 3.B.<BR>REMOVED DAMAGED SKIN PLIES AND DAMAGED CORE; CLEANED REPAIR AREA AND FABRICATED CORE PLUG USING BMS 8-124 C4T5G9 LOT#1287137 AND UPPER REPAIR PLIES USING BMS 9-3H2 LOT#1520142-1 IAW SRM 53-00-50-2R-6 PARA 3C-G(1).] INSTALLED CORE PLUG USING BMS 5-28TY19 LOT#AK2LP8414K AND UPPER REPAIR PLIES USING BMS 8-201TY4 LOT#AK2KP3165K; VACUUM BAGGED; LEAK CHECK GOOD WITH VACUUM GAUGE ID:ATS2441 CAL DUE 08/2023 IAW SRM 53-00-50-2R-6 PARA 3.F-H(1).;[06] INSPECTED AND VERIFIED CORRECTIVE ACTION 5.;[07] CURED UPPER SKIN AND CORE USING THERMOMETER ATS2208 CAL DUE 10/2023. REMOVED VACUUM BAG AND TRIMMED CORE LEVEL WITH THE OUTER FACE SHEET. FABRICATED REPAIR PLIES FOR LOWER SKIN USING BMS 9-3H2 LOT#1520142-1 IAW SRM 53-00-50-2R-6 PARA 3.H.(1)(A)-(C); I.(1)(A)AND(B);J;K(1)(A) INSTALLED LOWER REPAIR PLIES USING BMS 8-201TY4 LOT#AK2KP3165K; VACUUM BAGGED; LEAK CHECK GOOD WITH VACUUM GAUGE ID:ATS2107 CAL DUE 04/2023 IAW SRM 53-00-50-2R-6 PARA 3.K(1)-L(1).;CURED REPAIR; TRIMMED EXCESS MATERIAL AND INSTALLED ALL PREVIOUSLY REMOVED INSERTS USING BMS 5-107 LOT#AK2KP8383K IAW SRM 53-00-50-2R-6 PARA 3.M(1); N AND BOEING DWG 141A5810 SHEET 729

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