Service difficulty report · Floor Panel · Boeing 7377H4

Difficulty date
April 8, 2023
Submitted
May 18, 2023
Operation
Air carrier
Aircraft
N958WN
Make and model
Boeing 7377H4
Aircraft serial
36673
Aircraft time
38,993 hours, 23,664 cycles
Part
Floor Panel
Condition
Pulled
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

FWD PANEL 222CF UPPER FACESHEET HAS MULTIPLE AREAS OF PULLED STRANDS.<OUT OF ALLOWABLE LIMITS IAW SRM 53-00-50-1A-1 PARA 4.F.<BR><BR>WILL PERFORM REPAIRS IAW SRM 53-00-50-2R-1 REMOVED 40EA INSERTS TO FACILITATE REPAIR. REMOVED DAMAGED PLIES; CLEANED AND PREPARED PANEL IAW SRM 53-00-50-2R-1 PARA 3.A-C; J.;[02] VALIDATED APPLICABILITY OF SRM 53-00-50-2R-1.; FABRICATED REPAIR PLIES USING BMS 9-3 TYH2 CL7 ST1581 LOT: 1522395-2 IAW SRM 53-00-50-2R-1 PARA 3.K. <BR><BR>OK TO INSTALL;[05] INSPECTED AND VERIFIED CORRECTIVE ACTION 4. OKAY TO INSTALL REPAIR PLIES.;[06] INSTALLED REPAIR PLIES USING BMS 8-201 TY3 LOT: 1522301-1<BR>ASSEMBLED VACUUM BAG AND PERFORMED 5X5 TEST USING VACUUM GAUGE ATS2798. PASSED. IAW SRM 53-00-50-2R-1 PARA 3.K-L.;[07] CORRECTION TO ACTION 6: USED GAUGE ATS2798 DUE: 10/2023;[08] INSPECTED AND VERIFIED CORRECTIVE ACTIONS 6 AND 7.;[09] CURED REPAIR PLIES USING THERMOMETER ID: ATS2209 CAL DUE: 10/2023. REMOVED VACUUM BAG; AND TRIMMED REPAIR EDGES IAW SRM 53-00-50-2R-1 PARAGRAPH 3.M(1).;[10] VERIFIED CORRECTIVE ACTION 9;[11] DRILLED HOLES FOR INSERTS IAW SRM 53-00-50-2R-1 PARAGRAPH 3. N. AND BOEING DWG 144A5810 SHEET 750.;[12] INSTALLED 40EA INSERTS USING BMS 5-107 LOT: AK2KP8383K-1<BR>CURED USING THERMOMETER ATS2209 DUE: 10/2023 IAW SRM 53-00-50-2R-1 PARA 3.N ALONG WITH DWG 141A5810 SHEET 750;[13] VERIFIED CURE TAPE<BR>VERIFIED CORRECTIVE ACTION #11; 12

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