Service difficulty report · Floor Panel · Boeing 7377H4

Difficulty date
March 16, 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
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

AFT CABIN FLOOR PANEL 241ABF UPPER SKIN HAS AREAS OF PULLED STRANDS.<FOUND DAMAGE TO BE OUT OF ALLOWABLE LIMITS IAW SRM 53-00-50-1A-1 PARA 4.F.<BR>DAMAGE WILL BE REPAIRED IAW SRM 53-00-50-2R-1.<BR>REMOVED ALL INSERTS ON PANEL TO FACILITATE REPAIR; REMOVED DAMAGED SKIN PLIES ACROSS UPPER SURFACE AND LOOSE PIECES OF CORE; CLEANED REPAIR AREA IAW SRM 53-00-50-2R-1 PARA 3.C-F.;VALIDATED APPLICABILITY OF SRM 53-00-50-2R-1.APPLIED POTTING BMS 5-28TY19 LOT#AK2JP8366K TO EXPOSED CORE; CURED WITH THERMOMETER ID:ATS2208 CAL DUE 10/2023; SANDED SMOOTH TO SURFACE; CLEANED REPAIR AREA AND FABRICATED REPAIR PLIES USING BMS 9-3H2 LOT#1520142-1 IAW SRM 53-00-50-2R-1 PARA 3.G-K(1). INSPECTED AND VERIFIED CORRECTIVE ACTION 4. OKAY TO INSTALL REPAIR PLIES.;[06] INSTALLED REPAIR PLIES USING BMS 8-201TY4 LOT#AK2KP3165K; VACUUM BAGGED; LEAK CHECK GOOD WITH VACUUM GAUGE ID:ATS2798 CAL DUE 10/2023 IAW SRM 53-00-50-2R-1 PARA 3K(1)-L(1). INSPECTED AND VERIFIED CORRECTIVE ACTION 6.;[08] CURED REPAIR PLIES USING HEAT LAMP AND FLUKE THERMOMETER ID: ATS2209; CAL DUE: 10/2023 IAW SRM 53-00-50-2R-1 PARA 3. M. (1).;[09] UNBAGGED PANEL; TRIMMED EXCESS MATERIAL; INSTALLED ALL INSERTS USING BMS 5-107 LOT#AK2KP8383K AND BMS 5-28TY19 LOT#AK2JP8366K; CURED WITH THERMOMETER ID:ATS2208 CAL DUE 10/2023 IAW SRM 53-00-50-2R-1 PARA 3.M(1)-N AND BOEING DWG 147A5810 SHEET 88.

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