Service difficulty report · Panel · Boeing 7377H4

Difficulty date
June 13, 2021
Submitted
July 14, 2021
Operation
Air carrier
Aircraft
N226WN
Make and model
Boeing 7377H4
Aircraft serial
32494
Aircraft time
53,110 hours, 31,655 cycles
Part
Panel
Condition
Delaminated
Location
Rt Wing Le
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

R/W L/E PANEL 621CB HAS CORNER DELAMINATED (MARKED) ; / [01] IDENTIFIED PANEL MATERIAL IAW SRM 57-41-01-0I-4 FIG 5 TABLE 5 ITEM 3.<BR>FOUND DELAMINATION DAMAGE TO 2EA CORNERS TO BE OUT OF ALLOWABLE LIMITS IAW SRM 57-41-01-1A-1 PARA 4A(5).<BR>DAMAGE WILL BE REPAIRED IAW SRM 51-70-05-2R-6 PER SRM 57-41-01-2R-1 TABLE 202.<BR>REMOVED 2EA BACKUP PLATES TO FACILITATE REPAIR IAW SRM 51-40-02-0G-0 PARA 4E.<BR>REMOVED ENTIRE ALUMINUM FOIL BACKING PLY TO FACILITATE REPAIR IAW SRM 51-70-14-2R-3 PARA 4A(2)(E).<BR>REMOVED ALL DAMAGE FROM INNER SURFACE; CLEANED REPAIR AREA; NO CONTAMINATION NOTED IAW SRM 51-70-05-2R-6 PARA 4A-D.; [02] VALIDATED REPAIR SRM 51-70-05-2R-6 PER SRM 57-41-01-2R-1.; [03] VERIFIED DELAMINATION DAMAGE TO 2EA CORNERS TO BE OUT OF ALLOWABLE LIMITS IAW SRM 57-41-01-1A-1 PARA 4A(5). <BR>VALIDATED REPAIR IAW SRM 51-70-05-2R-6 PER SRM 57-41-01-2R-1 TABLE 202. VERIFIED DAMAGE REMOVAL PER SRM 51-70-05-2R-6 PARA 4. [05] COMPLETED FABRICATION OF REPAIR PLIES USING BMS 8-79 ST 1581 LOT#1455461-1; AND BMS 5-129 LOT#1457270-4; INSTALLED; VACUUM BAGGED; CHECKED FOR LEAKS; AND SET TO CURE USING HEATCON HOTBONDER ID:IS000678 S/N:12071586 IAW SRM 51-70-05-2R-6 PAR 4E-G.;[13] REPAIRED DELAMINATED CORNERS ON PANEL 621CB IAW SRM 57-41-01; SRM 51-70-05-2R-6 AND SRM 51-70-14-2R-3; [14] VERIFIED REINSTALLATION OF BACKING PLATES PER SRM 51-40-02-0G-0 AND BOEING DWG 116A9110<BR><BR>VERIFIED REPAIR OF PANEL 621CB IAW SRM 57-41-01; SRM 51-70-05-2R-6 AND SRM 51-70-14-2R-3

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