Service difficulty report · Floor Panel · Boeing 7377H4

Difficulty date
July 21, 2022
Submitted
August 22, 2022
Operation
Air carrier
Aircraft
N490WN
Make and model
Boeing 7377H4
Aircraft serial
32476
Aircraft time
59,880 hours, 35,571 cycles
Part
Floor Panel
Condition
Broken
Location
Fuselage
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 CABIN FLOOR PANEL 221BF IS BROKEN ON THE AFT O/B END / [01] IDENTIFIED FLOOR PANEL 221BF MATERIAL IAW SRM 53-00-50-0I-1 FIGURE 2 TABLE 2. DAMAGE AT DISCREPANT LOCATION EXCEEDS ALLOWABLE DAMAGE LIMITS IAW SRM 53-00-50-1A-1 PARAGRAPH 4.F. DAMAGE IS REPAIRABLE IAW SRM 53-00-50-2R-1.<BR><BR>REMOVED DAMAGED INSERTS; AND INSERTS IN THE REPAIR AREA IAW SRM 53-00-50-2R-1 PARAGRAPH 3.B<BR><BR>REMOVED A 2.5' X 17.5' AREA OF DELAMINATED CRACKED LOWER SKIN ONLY; AND REMOVED LOOSE PIECES OF CORE; AND CLEANED AREA. NO CONTAMINATION NOTED. OKAY TO APPLY POTTING TO EXPOSED CORE CELLS IAW SRM 53-00-50-2R-1 PARAGRAPH 3A.C-F.;FABRICATED REPAIR PLIES USING BMS9-3 ST1581 LOT#1493221-1 ALL IAW SRM 53-00-50-2R-1 PAR.3 H-K(1)(A)08] INSTALLED REPAIR PLIES WITH BMS8-201 LOT#AK2CP8139K AND VACUUM BAGGED; LEAK CHECKED GOOD USING VACUUM GAUGE ID:ATS2107 CAL DUE 09/2022 AND SET REPAIR TO CURE IAW SRM 53-00-50-2R-1 PARAGRAPH 3.K(1)(B-C)L(1).;[10] CURED REPAIR PLIES USING THERMOMETER ID: ATS2208 CAL DUE: 10/2022. REMOVED VACUUM BAG AND TRIMMED REPAIR EDGES AND CLEANED IAW SRM 53-00-50-2R-1 PARAGRAPH M(1).[13] INSTALLED ALL PREVIOUSLY REMOVED INSERTS USING BMS5-107 LOT# AK1KP9159K IAW SRM 53-00-50-2R-1 PARAGRAPH 3.N; AND FOR INSERT IDENTIFICATION BAC DWG 141A5810 ID:0056.[15] FWD CABIN FLOOR PANEL 221BF WITH DAMAGE AT THE AFT O/B END WAS REPAIRED IAW SRM 53-00-50-2R-1 AND BAC DWG 141A5810 ID:0056.

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