Service difficulty report · Panel · Boeing 7377K9

Difficulty date
August 24, 2022
Submitted
September 26, 2022
Operation
Air carrier
Aircraft
N7878A
Make and model
Boeing 7377K9
Aircraft serial
34320
Aircraft time
52,141 hours, 25,914 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

LT WING L/E PANEL 521CB IS DELAMINATED ON CORNER (MARKED) / [01] IDENTIFIED PANEL 521CB IAW SRM 57-41-01-0I-4 TABLE 5 FIGURE 5 ITEM 3.<BR><BR>DAMAGE FOUND OUT OF ALLOWABLE LIMITS IAW SRM 57-41-01-1A-1 PARA 4.A(5).<BR><BR>DAMAGE TO BE REPAIRED PER SRM 51-70-05-2R-6 AS DIRECTED BY SRM 57-41-01-2R-1 TABLE 202 & PARA 4.E.<BR><BR>REMOVED 2EA BACKUP PLATE TO FACILITATE REPAIR IAW SRM 51-40-02-0G-0 PARA 4.E.<BR><BR>REMOVED ENTIRE ALUMINUM FOIL PLY TO FACILITATE REPAIR IAW SRM 51-70-14-2R-3 PARA 4.A(2).<BR><BR>REMOVED DAMAGE ON UPPER AND LOWER SURFACE OF PANEL AND CLEANED IAW SRM 51-70-05-2R-6 PARA 4.A-D.[07] FINISHED FABRICATING REPAIR PLIES WITH BMS 5-154 TY2 LOT#1501794-1 AND INSTALLED REPAIR PLIES.<BR>VACUUM BAGGED; LEAK CHECK GOOD; AND SET TO CURE WITH HOT BONDER ID:NCX000523 DUE:06/2023 IAW SRM 51-70-05-2R-6 PARA 4.E-G.[12] FABRICATED REPAIR FOIL BMS 8-289 LOT# 1484605-1; AND APPLIED RESIN MIX BMS 5-128 LOT# 1496785-3; AND INSTALLED VACUUM BAG WITH LEAK CHECK GOOD USING VACUUM GAUGE ID: ATS2441 CAL/DUE: 08/2023 AND CURED USING HEATLAMP MONITORED USING THERMOMETER ID: ATS2209 CAL/DUE: 10/2022 IAW SRM 51-70-14-2R-3 PAR.4.A.(3). (5)(A)1). (11)(A)-(K).16] FABRICATED REPAIR FOIL BMS 8-289 LOT# 1484605-1; AND APPLIED RESIN MIX BMS 5-128 LOT# 1496785-3; AND INSTALLED VACUUM BAG WITH LEAK CHECK GOOD USING VACUUM GAUGE ID: ATS2438 CAL/DUE: 03/2023 IAW SRM 51-70-14-2R-3 PAR.4.A.(3); (5)(A)(1); (11)(A)-(J);

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