Service difficulty report · Floor Panel · Boeing 7378H4

Difficulty date
February 20, 2023
Submitted
March 20, 2023
Operation
Air carrier
Aircraft
N8528Q
Make and model
Boeing 7378H4
Aircraft serial
36927
Aircraft time
19,732 hours, 9,567 cycles
Part
Floor Panel
Condition
Delaminated
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

CABIN FLOOR PANEL 221FF SURFACE IS DELAMINATED.<DAMAGE IS BEYOND ALLOWABLE LIMITS IAW SRM 53-00-50-1A-1 PARAGRAPH 4.F AND WILL BE REPAIRED IAW SRM 53-00-50-2R-1. REMOVED FIVE INSERTS FROM THE PANEL AND REMOVED AN APPROX. 13'X24' AREA OF DAMGED TOOLSIDE PLIES STARTING AT THE FORWARD EDGE WITH NO DISBOND OR CONTAMINATION NOTED; WORK PERFORMED IAW SRM 53-00-50-2R-1 PARAGRAPH 3.A-F.;[02] VALIDATED APPLICABILITY OF SRM 53-00-50-2R-1.;[03] RII BUYBACK OF CORRECTIVE ACTIONS 1 AND 2.;[04] FABRICATED REPAIR PLIES FROM BMS9-3 STYLE 1581 LOT NUMBER 1513216-1 IAW SRM 53-00-50-2R-1 PARAGRAPH 3.K.(1).(A). OK TO INSTALL REPAIR PLIES.;[05] RII BUYBACK FOR CORRECTIVE ACTION 4. INSPECTED AND VERIFIED. OKAY TO INSTALL REPAIR PLIES.<BR><BR>VERIFIED MEASUREMENTS TABLE.;[06] INSTALLED PLIES WITH BMS8-201 CLASS III LOT NUMBER AK2EP8210K; VACUUM BAGGED PLIES AND VERIFIED A SATISFACTORY 5X5 WITH VACUUM GAUGE: ID: ATS2797 DUE: 10/2023 WORK ACCOMPLISHED IAW SRM 53-00-50-2R-1 PARAGRAPH 3.K.(1).(B-C) AND L.(1).;[07] RII BUYBACK FOR CORRECTIVE ACTION 6. 5X5 LEAK CHECK PASSED.;[08] CURED PLIES WITH A HEAT LAMP; UNBAGGED PLIES AND REPLACED REMOVED INSERTS USING BMS5-107 CLASS 1 LOT NUMBER AK2KP8383K; USED THERMOMETER ID: ATS2209 DUE: 10/2023 FOR THE CURES; WORK PERFORMED IAW SRM 53-00-50-2R-1 PARAGRAPH 3.M.(1) AND N.;[09] IN ITEM 8: USED DRAWING 141A5810 SHEET 157.

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