Service difficulty report · Floor Panel · Boeing 7377K9

Difficulty date
August 27, 2022
Submitted
September 20, 2022
Operation
Air carrier
Aircraft
N7878A
Make and model
Boeing 7377K9
Aircraft serial
34320
Aircraft time
52,141 hours, 25,914 cycles
Part
Floor Panel
Part number
222DF
Condition
Pulled
Location
Cabin Floor
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 FLOOR PANEL 222DF UPPER SURFACE HAS PULLED STRANDS. / DAMAGE IS OUT OF ALLOWABLE DAMAGE LIMITS ACCORDING TO SRM 53-00-50-1A-1; PARA. 4.E.(1).<BR><BR>REPAIR TO BE ACCOMPLISHED ACCORDING TO SRM 53-00-50-2R-1.<BR><BR>REMOVED 19EA THRU INSERTS ACCORDING TO SRM 53-00-50-2R-1; PARA. 3.B.<BR><BR>VISUALLY EXAMINED EXTENT OF DAMAGE; REMOVED DELAMINATED SKIN PLIES AT THE O/B EDGE ON THE UPPER SURFACE; REMOVED SURFACE CONTAMINANTS; PREPARED REPAIR AREA APPLICATION OF REPAIR PLIES; AND CLEANED REPAIR AREA; AND TAP TESTED AREA (NO DISBONDS NOTED); ALL ACCORDING TO SRM 53-00-50-2R-1; PARA'S 3.A; AND 3.C THRU 3.F. FABRICATED UPPER SKIN REPAIR PLIES FROM BMS 9-3; ST 1581 FIBERGLASS (LOT# 1493221-1) AND CLEANED THE REPAIR AREA; ALL ACCORDING TO SRM 53-00-50-2R-1; PARA'S 3.J THRU 3.K.(1).<BR><BR>REQUEST OK TO LAYUP REPAIR PLIES.;OK TO LAYUP REPAIR PLIES;[06] INSTALLED REPAIR PLIES USING BMS 8-201TY3 LOT#AK2EP8210K; VACUUM BAGGED; LEAK CHECK GOOD WITH VACUUM GAUGE ID:ATS2107 CAL DUE 09/2022 IAW SRM 51-70-05-2R-1 PARA 3.K(1)-L(1).[08] CURED REPAIR PLIES USING THERMOMETER ID:ATS2208 CAL DUE 10/2022 IAW SRM 53-00-50-2R-1 PARA 3.M(1).;[09] INSPECTED ACTION 8;[10] INSTALLED 19EA THRU INSERTS USING BMS 5-107; CL 1 ADHESIVE (LOT# AK1KP9159K) ACCORDING TO SRM 53-00-50-2R-1 PARA 3.N.; AND DWG# 141A5810; SHEET 185. REPAIR IS COMPLETE.<BR><BR>THERMOMETER ID: ATS2208; DUE: 10/2022;

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