Service difficulty report · Floor Panel · Boeing 7377H4

Difficulty date
March 17, 2023
Submitted
April 18, 2023
Operation
Air carrier
Aircraft
N281WN
Make and model
Boeing 7377H4
Aircraft serial
36528
Aircraft time
51,516 hours, 31,045 cycles
Part
Floor Panel
Condition
Debonded
Location
Zn 100 Fus Lower
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 242VF UPPER SKIN PREVIOUS REPAIR IS DISBONDED.<[01] IDENTIFIED PANEL 242VF IAW SRM 53-00-50-0I-1 FIGURE 6 TABLE 6 <BR><BR>DAMAGE EXCEEDS ALLOWABLE DAMAGE LIMITS IAW SRM 53-00-50-1A-1 PAR.4 B<BR><BR>DAMAGE TO BE REPAIRED IAW SRM 53-00-50-2R-1 <BR> <BR>REMOVED (38EA) THROUGH INSERTS AND (1EA) BLIND INSERT TO FACILITATE REPAIR IAW SRM 53-00-50-2R-1 PAR.3 A-B;[02] VALIDATED APPLICABILITY OF REPAIR TO BE COMPLETED IAW SRM 53-00-50-2R-1.;[03] REMOVED PLY DAMAGE FROM THE ENTIRE UPPER SURFACE OF THE PANEL WITH NO DISBOND OR CONTAMINATION NOTED; WORK PERFORMED IAW SRM 53-00-50-2R-1 PARAGRAPH 3.C-F.;[04] UPDATED MEASUREMENTS TABLE.;[05] INSPECTED AND VERIFIED CORRECTIVE ACTIONS 1; 2; 3 AND 4.<BR><BR>VERIFIED MEASUREMENTS TABLE.;[06] POTTED OPEN CORE CELLS WITH BMS5-28 TYPE 19 LOT NUMBER AK2LP8414K IAW SRM 53-00-50-2R-1 PARAGRAPH 3.G.;[07] CURED POTTING USING THERMOMETER ID:ATS2209 CAL DUE: 10/2023 AND SANDED TO CONTOUR. FABRICATED REPAIR PLIES USING BMS9-3 ST1581 LOT# 1520142-1. OKAY TO INSTALL REPAIR PLIES IAW SRM 53-00-50-2R-1 PARAGRAPH 3.H-J.K(1);[08] VERIFIED CORRECTIVE ACTIONS 6 AND 7<BR><BR>OK TO INSTALL REPAIR PLIES;[09] INSTALLED REPAIR PLIES USING BMS8-201 TY4 LOT#AK2KP3165K. VACUUM BAGGED REPAIR AND LEAK CHECKED BAG GOOD USING VACUUM GAUGE ID: E11543 CAL DUE: 09/2023 IAW SRM 53-00-50-2R-1 PARAGRAPH 3.K(1)L(1).

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