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 222DF HAS SURFACE DELAMINATION AND CORRODED INSERTS.<FOUND DAMAGE TO BE OUT OF ALLOWABLE LIMITS IAW SRM 53-00-50-1A-1 PARA 4.F.<BR>DAMAGE TO BE REPAIRED IAW SRM 53-00-50-2R-1.<BR><BR>REMOVED 33EA INSERTS TO FACILITATE REPAIR; REMOVED DAMAGED PLIES; AND CLEANED REPAIR AREA IAW SRM 53-00-50-2R-1 PARA 3.A-C;E AND F.;[02] VALIDATED APPLICABILITY OF SRM 53-00-50-2R-1.;[03] RII BUYBACK FOR STEPS 1 AND 2. INSPECTED AND VERIFIED. <BR><BR>VERIFIED MEASUREMENTS TABLE.;[04] CORRECTION TO ITEM 3: SHOULD READ 'CORRECTIVE ACTIONS 1 AND 2'.;[05] FABRICATED REPAIR PLIES USING BMS 9-3 ST1581 LOT#1513216-1 IAW SRM 53-00-50-2R-1 PARA 3.K.<BR>OK TO INSTALL REPAIR PLIES.;[06] VERIFIED CORRECTIVE ACTION 5<BR><BR> 'INSTALLED REPAIR PLIES USING BMS8-201 RESIN LOT# AK2EP8210K AND SET VACUUM BAG SYSTEM WITH BLEED DOWN TEST CHECKED GOOD USING GAUGE ID: ATS2441 CAL/DUE: 08/2023 IAW SRM 53-00-50-2R-1 PAR. 3.L.(1) OK TO CURE.';[09] RII VERIFIED CORRECTIVE ACTION 8;[10] VERIFIED CORRECTIVE ACTION 8;[11] CURED REPAIR PLIES UNDER HEATLAMP MONITORED USING THERMOMETER ID: ATS2209 CAL/DUE: 10/2023 REMOVED VACUUM BAG SYSTEM AND CLEANED REPAIR EDGES IAW SRM 53-00-50-2R-1 PAR. 3.M.(1); INSTALLED INSERTS USING BMS 5-107 LOT#AK2KP8383K AND CURED UNDER HEAT LAMP USING THERMOMETER ID:ATS2208 DUE:10/23 IAW SRM 53-00-50-2R-1 PARA 3.N AND BDWG 141A5810-798;

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