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
Damaged
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 241ZF HAS A RIPPED OUT INSERT ALONG THE O/B EDGE. (MARKED)<FOUND DAMAGE TO INSERT HOLE TO BE OUT OF ALLOWABLE DAMAGE LIMITS IAW SRM 53-00-50-1A-1 PARA 4B. REMOVED 1EA DAMAGED INSERT IAW SRM 53-00-50-2R-6 PARA 3B.REMOVED DAMAGE TO BOTH SKINS AND CORE; FABRICATED CORE PLUG FROM BMS8-124; C4; T5; G9; AND UPPER SURFACE REPAIR PLIES FROM BMS9-3 H2 ST1581 LOT#1520142-1.;CORE PLUG LOT#1287137VALIDATED APPLICABILITY OF SRM 53-00-50-2R-6. INSTALLED CORE PLUG USING BMS5-28 TYPE 19 LOT#AK2JP8366K AND UPPER SURFACE REPAIR PLIES USING BMS8-201 LOT# AK2EP8210K; VACUUM BAGGED; CHECKED FOR LEAKS; LEAK CHECKED GOOD USING VACUUM GAUGE ATS2107 CAL DUE DATE 04/2023 IAW SRM 53-00-50-2R-6 PARA 3F-G(1) AND H(1).;CURED UPPER SURFACE PLIES WITH A HEAT LAMP; USING THERMOMETER ID: ATS2208 DUE: 10/2023; SANDED CORE PLUG FLUSH;FABRICATED BAGSIDE PLIES FROM BMS9-3 LOT NUMBER 1520142-1 IAW SRM 53-00-50-2R-6 PARAGRAPH 3.I.(1)-J AND K.(1).(A) INSTALLED PLIES WITH BMS8-201 CLASS IV LOT NUMBER AK2KP3165K; VACUUM BAGGED PLIES AND PERFORMED A SATISFACTORY 5X5 LEAK TEST; ;CURED PLIES UNDER A HEAT LAMP USING THERMOMETER ID: ATS2208 DUE: 10/2023; TO MONITOR THE TEMPERATURE OF THE CURE; UNBAGGED PLIES AND REPLACED THE REMOVED INSERT USING BMS5-107 CLASS 1 RESIN LOT NUMBER AK2KP8383K - 1; CURED RESIN WITH A HEAT LAMP USING ID: ATS2208 IAW SRM 53-00-50-2R-6 PARAGRAPH 3.M.(1) AND N ALSO IAW DRAWING 147A5810 SHEET 98.

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