Service difficulty report · Panel · Boeing 737790

Difficulty date
August 1, 2022
Submitted
August 26, 2022
Operation
Air carrier
Aircraft
N560WN
Make and model
Boeing 737790
Aircraft serial
30542
Aircraft time
70,697 hours, 34,642 cycles
Part
Panel
Condition
Delaminated
Location
R/H Wing
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 DELAMINATION ON CORNER (MARKED) / [01] IDENTIFIED PANEL IAW SRM 57-41-01-0I-4 TABLE 5; FIG.5; ITEM 3. CORNER EROSION DAMAGE TO L/E IS BEYOND ALLOWABLE DAMAGE LIMITS IAW SRM 57-41-01-1A-1 PARA 4.A(5)(C) DAMAGE TO BE REPAIRED IAW SRM 51-70-05-2R-6 AS DIRECTED BY SRM 57-41-01-2R-1 PARA. 4.B (2) TABLE 202. REMOVED INNER SURFACE ALUMINUM FOIL IAW SRM 51-70-14-2R-3 PARA. 4.A(1)-(2)(B)&(E). FOIL TO INNER SURFACE WILL BE REPAIRED IAW SRM 51-70-14-2R-3. SANDED OUTER SURFACE IAW AMM 51-21-99-300-802 PARA 3.C.(1) REMOVED (2EA) BACKUP PLATES IAW SRM 51-40-02-0G-0 PARA 4(E).[05] FABRICATED REPAIR PLIES USING BMS5-129 TY2 LOT#1497186-1; BMS8-79 120 LOT#1493863-1; BMS8-79 1581 LOT#1495935-1 IAW SRM 51-70-05-2R-6 PARA 4.E;[07] FABRICATED AND INSTALLED MESH WITH BMS8-336 LOT#1360513-1 AND BMS 5-129 LOT#1481053-1 IAW SRM 51-70-14-2R-4 PARA 6.C-E;H;I;K(1-12). VACUUM BAGGED; LEAK CHECK GOOD USING VACUUM GAUGE ID:ATS2107 DUE:09/2022 AND CURED USING HOT BONDER ID:ATS532 DUE:06/2023; UNBAGGED; LIGHTLY SANDED AND CLEANED REPAIR AREA IAW SRM 51-70-05-2R-6 PARA 4.F;G&I.[13] INSTALLED FOIL PLY USING BMS8-289 LOT# 148605-1 AND RESIN BMS5-128 LOT# JH1LAR7523 AND VACUUM BAGGED; LEAK CHECKED GOOD USING VACUUM GAUGE ID: ATS2107 CAL DUE: 09/2022; AND CURED FOIL PLY USING THERMOMETER ID: ATS2208 CAL DUE: 10/2022 IAW SRM 51-70-14-2R-3 PARAGRAPH 4.A(2)(E)2-3)(3)-(5)(A)(1)(11)(A)-(L).