Service difficulty report · Floor Panel · Boeing 7377H4

Difficulty date
April 8, 2023
Submitted
May 17, 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

AFT FLOOR PANEL 242SF UPPER FACESHEET HAS AREAS OF PULLED STRANDS.<[01] IDENTIFIED FLOOR PANEL 242SF MATERIAL IAW SRM 53-00-50-0I-1 FIGURE 6 TABLE 6. PULLED STRANDS OF FIBERGLASS AT DISCREPANT LOCATION EXCEED ALLOWABLE DAMAGE LIMITS AND REQUIRE REPAIR IAW SRM 53-00-50-1A-1 PARAGRAPH 4.F. DAMAGED AREAS ARE REPAIRABLE IAW SRM 53-00-50-2R-1.<BR><BR>REMOVED INSERTS TO FACILITATE REPAIR IAW SRM 53-00-50-2R-1 PARAGRAPH 3.B<BR><BR>REMOVED DAMAGED PLIES (STRANDS) AT DISCREPANT LOCATION AND CLEANED AREAS IAW SRM 53-00-50-2R-1 PARAGRAPH 3.A;C;E-F.;[02] VALIDATED REPAIR PER SRM 53-00-50-2R-1;[03] VERIFIED CORRECTIVE ACTION STEPS 1 AND 2.;[04] FABRICATED REPAIR PLIES FROM BMS9-3 ST1581 LOT# 1522395-2. OKAY TO INSTALL REPAIR PLIES IAW SRM 53-00-50-2R-1 PARAGRAPH 3.K(1)(A).;[05] VERIFIED CORRECTIVE ACTION 4<BR><BR>OK TO INSTALL REPAIR PLIES;[06] INSTALLED REPAIR PLIES USING BMS8-201 TY4 LOT# 1523449-1. VACUUM BAGGED AND LEAK CHECKED GOOD USING VACUUM GAUGE ID: ATS2441 CAL DUE: 08/2023 IAW SRM 53-00-50-2R-1 PARAGRAPH 3.K(1)(B-C)L(1) CURED REPAIR PLIES USING THERMOMETER ID: ATS2209 CAL DUE: 10/2023. REMOVED VACUUM BAG AND TRIMMED REPAIR EDGES AND CLEANED IAW SRM 53-00-50-2R-1 PARAGRAPH 3.L(1); M(1);INSTALLED ALL INSERTS WITH ADHESIVE BMS5-107 LOT# AK2KP8383K-1; AND CURED USING THERMOMETER ATS2209 CAL DUE: 10/2023 IAW SRM 53-00-50-2R-1 PARAGRAPH 3.N AND BAC DWG 147A5810 ID:0099; ATTACHED CURE SHEETS.;[14] FINAL INSPECTION. JOB COMPLETE

More about the Boeing 737-7H4