Service difficulty report · Floor Panel · Boeing 7377H4

Difficulty date
April 8, 2023
Submitted
May 18, 2023
Operation
Air carrier
Aircraft
N958WN
Make and model
Boeing 7377H4
Aircraft serial
36673
Aircraft time
38,993 hours, 23,664 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

FWD PANEL 222AF UPPER FACESHEET HAS MULTIPLE AREAS OF PULLED STRANDS.<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 ALL DAMAGED PLIES ON UPPER AND LOWER SURFACE; REMOVED LOOSE PIECES OF CORE; CLEANED REPAIR AREA IAW SRM 53-00-50-2R-1 PARA 3.B-F;[02] VALIDATED APPLICABILITY OF SRM 53-00-50-2R-1.;[03] INSPECTED AND VERIFIED CORRECTIVE ACTIONS 1 AND 2.<BR><BR>VERIFIED MEASUREMENTS TABLE.;[04] APPLIED POTTING BMS 5-28TY19 LOT#AK2IP3152K AND CURED WITH THERMOMETER ID:ATS2208 CAL DUE 10/2023 IAW SRM 53-00-50-2R-1 PARA 3.G-H.;[05] SANDED POTTING SMOOTH TO SURFACE; CLEANED REPAIR AREA AND FABRICATED REPAIR PLIES USING BMS 9-3H2 LOT#1522395-2 IAW SRM 53-00-50-2R-1 PARA 3.I-K(1).<BR>OK TO INSTALL.;[06] INSPECTED AND VERIFIED CORRECTIVE ACTIONS 4 AND 5. OKAY TO INSTALL REPAIR PLIES.;[07] INSTALLED REPAIR PLIES USING BMS 8-201 LOT#1523449-1; VACUUM BAGGED REPAIR; LEAK CHECK GOOD USING VACUUM GAUGE ID: ATS2441 CAL DUE:10/2023 IAW SRM 53-00-50-2R-1 PARA 3.K-L.;[08] VERIFIED CORRECTIVE ACTION 7;[09] CURED REPAIR USING THERMOMETER ID:ATS2208 CAL DUE 10/2023; UNBAGGED AND TRIMMED EXCESS MATERIAL IAW SRM 53-00-50-2R-1 PARA 3.M(1).;[10] INSTALLED ALL INSERTS USING BMS 5-107 LOT#AK2KP8383K-1 IAW SRM 53-00-50-2R-1 PARA 3.N AND BOEING DWG 141A5810 ID 769

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