Service difficulty report · Panel · Boeing 7377H4

Difficulty date
August 13, 2022
Submitted
September 27, 2022
Operation
Air carrier
Aircraft
N489WN
Make and model
Boeing 7377H4
Aircraft serial
33855
Aircraft time
57,460 hours, 34,246 cycles
Part
Panel
Condition
Delaminated
Location
L/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

LEFT WING L/E PANEL 521DB HAS DELAM AT 3EA CORNERS AT FWD EDGE / [01] REMOVED 1EA BACKUP PLATE TO FACILITATE REPAIR IAW SRM 51-40-02-0G-0 PAR 4E.;[02] IDENTIFIED PANEL 521DB IAW SRM 57-41-01-0I-4 FIGURE 5 TABLE 5 ITEM 2.<BR>DAMAGE WAS FOUND OUT OF ALLOWABLE LIMITS IAW SRM 57-41-01-1A-1 PARA 4.A(2).<BR>DAMAGE TO BE REPAIRED IAW SRM 51-70-05-2R-6 PER SRM 57-41-01-2R-1 PARA 4.B.(2) TABLE 202.<BR><BR>REMOVED ENTIRE ALUMINUM FOIL PLY TO FACILITATE REPAIR IAW SRM 51-70-14-2R-3 PARA 4.A(2).<BR>REMOVED DAMAGE; CLEANED REPAIR AREA IAW SRM 51-70-05-2R-6 PARA 4.A-D.;[05] STARTED FABRICATING REPAIR PLIES USING BMS 5-129 TY2 LOT#1497184-1; BMS 8-79 ST120 LOT#1497818-1; AND BMS 8-79 ST1581 IAW SRM 51-70-05-2R-6 PARA 4.E;[06] COMPLETED PLY FABRICATION USING BMS 5-129 GR 5 ADHESIVE LOT#1497184-1; BMS 8-79 ST120 GLASS LOT#1497818-1; AND BMS 8-79 ST1581 GLASS LOT 1495935-1 IAW SRM 51-70-05-2R-6 PARA 4.E.<BR>LAID UP THE REPAIRS ; VACUUM BAGGED ; LEAK CHECKED & SET TO CURE IAW SRM 51-70-05-2R-6 PARA 4. STEP F.;[10] FABRICATED REPAIR FOIL USING BMS 8-289 LOT#1484605-1 AND BMS 5-128 LOT#1496522-1. INSTALLED VACUUM BAG; LEAK CHECK GOOD USING VACUUM GAUGE ID:ATS2107 DUE:09/2022 AND CURED USING THERMOMETER ID:ATS2208 DUE:10/2022. UNBAGGED AND TRIMMED EXCESS FOIL IAW SRM 51-70-14-2R-3 PARA 4.A(3-4);5(A)&(11). INSTALLED 1EA BACKUP PLATE IAW SRM 51-40-02-0G-0 PARA 4.A-C & BDWG 116A9110-25;[11] VERIFIED CORRECTIVE ACTION 10<BR><BR>VERIFIED MEASUREMENTS TABLE

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