Service difficulty report · Floor Panel · Boeing 7377BD

Difficulty date
March 19, 2023
Submitted
April 4, 2023
Operation
Air carrier
Aircraft
N556WN
Make and model
Boeing 7377BD
Aircraft serial
33936
Aircraft time
37,398 hours, 21,958 cycles
Part
Floor Panel
Condition
Corroded
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

2 EACH FLOORBOARD FASTENER HOLES ALONG THE AFT EDGE; IN PANEL 241AAF REQUIRE RELOCATION DUE TO FLOOR BEAM REPAIR AT BS 986<DURING REPAIR OF FLOOR BEAM AT BS 986; (2EA) INSERT HOLES IN FLOOR PANEL REQUIRE RELOCATION AND WILL BE REPAIRED AS GIVEN IAW SRM 53-70-51-2R-4 PARA 4.I NOTE.REMOVED (2EA) THROUGH INSERTS IAW SRM 53-00-50-2R-6 PARA 3.B.FABRICATED REPAIR PLIES FOR LOWER SURFACE USING BMS 9-3 ST1581 LOT# 1520142-1 AND CORE PLUGS USING BMS 8-124 CL4 TY5 GR9 LOT# 1287137 IAW SRM 53-00-50-2R-6 PARA 3.F & 3.G (1).INSTALLED LOWER SURFACE REPAIR PLIES AND CORE PLUGS USING LAMINATING RESIN BMS 8-201 TY 4 LOT# AK2KP3165K AND POTTING RESIN BMS 5-28 TY19 LOT# AK2LP8414K; VACUUM BAGGED AND COMPLETED SUCCESSFUL BLEED DOWN TEST ALL IAW SRM 53-00-50-2R-6 PARA'S 3.F; 3.G (1) & 3.H (1). CURED LOWER SURFACE REPAIR PLIES; AND CORE PLUG USING USING HEATCON HOTBONDER ID: ATS883 / CAL DUE DATE: 10/2023. REMOVED VACUUM BAG AND SANDED CORE PLUGS TO CONTOUR IAW SRM 53-00-50-2R-6 PARAGRAPH 3.I(1)J.FABRICATED REPAIR PLIES FOR UPPER SURFACE FROM BMS9-3 ST1581 LOT#1520142-1.INSTALLED REPAIR PLIES ON UPPER SURFACE USING BMS8-201 TY4 LOT#AK2KP3165K. VACUUM BAGGED REPAIR PLIES;CURED; UNBAGGED AND TRIMMED EDGES OF REPAIR PLIES IAW SRM 53-00-50-2R-6 PARA 3. M. (1). LOCATED AND INSTALLED 2 EACH INSERTS WITH BMS5-107 LOT#AK2K2P8383K-1 AND CURED AS REQUIRED IAW SRM 53-00-50-2R-6 PARAGRAPH 3.N; AND BAC DWG 147A5810 ID:0023; AND SRM 53-70-51-2R-4 PARAGRAPH 4.I NOTE. UPLOADED CURE SHEETS.

More about the Boeing 737-7BD