Service difficulty report · Wing · Boeing 73776Q

Difficulty date
January 11, 2023
Submitted
February 16, 2023
Operation
Air carrier
Aircraft
N565WN
Make and model
Boeing 73776Q
Aircraft serial
30282
Aircraft time
56,383 hours, 37,305 cycles
Part
Wing
Condition
Delaminated
Location
Zn 600 Right Win
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

RIGHT WING COMPOSITE FIXED LEADING EDGE UPPER SURFACE IS DELAMINATED FROM OFSS 655 TO OFSS 683.<[01] IDENTIFIED R/H O/B UPPER FIXED LEADING EDGE MATERIAL ACCORDING TO SRM 57-41-01-0I-3; FIG. 4; TABLE 4; ITEM 1; AND FIG. 8; TABLE 8. <BR><BR>FOUND DAMAGE TO BE OUT OF ALLOWABLE LIMITS IAW SRM 57-41-01-1A-1; PARA'S 2.B AND 4.B.(5); AND FIG. 101. <BR><BR>AREAS TO BE REPAIRED ACCORDING TO SRM 51-70-05-2R-4; AS REQUIRED BY SRM 57-41-01-2R-1; PARA'S 2.F; 4.B.(1); AND TABLE 201.<BR><BR>STRIPPED UPPER SURFACE PAINTS/PRIMERS; REMOVED LOWER SURFACE BONDED ALUMINUM FOIL; REMOVED DELAMINATED PLIES AND CORE TO A REGULAR SHAPE THRU BOTH BOTH FACESHEETS; APPROX. 51' FROM O/B END; AND 8' FROM THE FWD EDGE; TAP TESTED AREAS (NO DISBONDS NOTED); REMOVED CONTAMINANTS FROM REPAIR AREA; ALL ACCORDING TO SRM 51-70-05-2R-4; PARA'S 4.A AND 4.B.; AND SRM 51-70-14-2R-3. PARA. 4.A.(2).(B).;[12] FABRICATED ALUMINUM FOIL REPAIR PLY FROM BMS 8-289 LOT#1507307-1; INSTALLED WITH BMS 5-128 LOT#JH2FAL7046; VACUUM BAGGED; LEAK CHECK GOOD; CURED; UNBAGGED AND TRIMMED EXCESS MATERIAL IAW SRM 51-70-14-2R-3 PARA 4(3-5)(11)(A-L) AND BOEING DWG 116A5411 FL11.<BR>APPLIED ALUMINUM TAPE 3M Y425 LOT#1514681-1 ACROSS FWD EDGE IAW BOEING DWG 116A5411 FL 11.<BR>REFINISHED OUTER SURFACE IAW SRM 51-70-05-2R-4 PARA 4.M.<BR><BR>THERMOMETER ID:ATS2208 CAL DUE 10/2023<BR>VACUUM GAUGE ID:ATS2441 CAL DUE 08/2023<BR>MULTIMETER ID:ATS1658 CAL DUE 03/2023;[13] VERIFIED CORRECTIVE ACTION #12

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