Service difficulty report · Floor Panel · Boeing 7377H4

Difficulty date
July 7, 2022
Submitted
August 18, 2022
Operation
Air carrier
Aircraft
N202WN
Make and model
Boeing 7377H4
Aircraft serial
33999
Aircraft time
58,974 hours, 35,001 cycles
Part
Floor Panel
Part number
221DF
Condition
Pulled
Location
Cabin Floor
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 221DF UPPER SURFACE HAS AREAS OF PULLED STRANDS. / REMOVED AN APPROX. 19'X9' AREA OF DAMAGED TOOLSIDE PLY DAMAGE LOCATED 10' FROM THE OUTBOARD EDGE AND 14' FROM THE FORWARD EDGE WITH NO DISBOND; EXPOSED CORE CELLS OR CONTAMINATION NOTED; ALSO REMOVED 19 EA INSERTS FROM PANEL; WORK PERFORMED IAW SRM 53-00-50-2R-1 PARAGRAPH 3.A-F.;[02] VALIDATED APPLICABILITY OF SRM 53-00-50-2R-1.;[03] VERIFIED CORRECTIVE ACTION #1; 2;[04] FABRICATED REPAIR PLIES FROM BMS9-3 TYPE H2 CLASS 7 STYLE 1581 LOT NUMBER 1493221-1 IAW SRM 53-00-50-2R-1 PARAGRAPH 3.K.(1).(A). OK TO INSTALL REPAIR PLIES.;[05] VERIFIED CORRECTIVE ACTION #4;[06] INSTALLED PLIES USING BMS8-201 LOT NUMBER 1494809-1; AND VACUUM BAGGED; VERIFIED SATISFACTORY 5X5 SUING VACUUM GAUGE ID: ATS2438 DUE: 03/2023; WORK PERFORMED IAW SRM 53-00-50-2R-1 PARAGRAPH 3.K.(1).(B-C) AND L.(1).(A-C).;[07] VERIFIED CORRECTIVE ACTION #6;[08] CURED PLIES UNDER HEAT LAMP USING THERMOMETER ID: ATS1174 DUE: 03/2023; WORK ACCOMPLISHED IAW SRM 53-00-50-2R-1 PARAGRAPH 3.M.;[09] UNBAGGED PANEL AND INSTALLED THROUGH INSERTS USING BMS5-107 LOT#AK1KP9159K AND INSTALLED BLIND INSERTS USING BMS5-28 TYPE 19 LOT#AK2AP8108K IAW SRM 53-00-50-2R-1 PARA 3M-N;[10] CURED BLIND INSERTS USING HOTBONDER ID: IS000678 CAL DUE DATE 04/2023 AND THROUGH INSERTS WITH A HEAT LAMP AND THERMOMETER ATS2208 CAL DUE DATE 10/2022 IAW SRM 53-00-50-2R-1 PARA 3N;[

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