Service difficulty report · Panel · Boeing 7377H4

Difficulty date
June 16, 2023
Submitted
July 17, 2023
Operation
Air carrier
Aircraft
N417WN
Make and model
Boeing 7377H4
Aircraft serial
29822
Aircraft time
71,145 hours, 42,399 cycles
Part
Panel
Part number
UNKNOWN
Condition
Pulled
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

R/W L/E PANEL 621SB HAS PULLED FASTENER HOLES (MARKED)<[01] IDENTIFIED PANEL 621SB MATERIAL IAW SRM 57-41-01-0I-4 TABLE 3 FIGURE 3 ITEM 1. DAMAGE AT DISCREPANT LOCATION EXCEEDS ALLOWABLE DAMAGE LIMITS IAW SRM 57-41-01-1A-1 PARAGRAPH 4.A(5). DAMAGE IS REPAIRABLE PER SRM 51-70-04-2R-9 AS DIRECTED BY SRM 57-41-01-2R-1.<BR><BR>REMOVED ENTIRE FOIL PLY FROM THE BAG SIDE TO FACILITATE REPAIR IAW SRM 51-70-14-2R-3 PARAGRAPH 4.A(2)(B).<BR><BR>REMOVED 2 EACH BACKPLATES TO FACILITATE REPAIR IAW SRM 51-40-02-0G-0 PARAGRAPH 4.<BR><BR>REMOVED DELAMINATED PLIES AT 2 EACH FASTENER HOLES TO .50'. NO CONTAMINATION NOTED. PREPARED HOLES FOR SLURRY MIX IAW SRM 51-70-04-2R-9 PARAGRAPH 4.A-C;[08] FABRICATED AND INSTALLED REPAIR PLIES USING FIBERGLASS BMS 9-3; TYPE 2; CLASS 7; STYLE 1581; LOT# 1526805-2 AND RESIN BMS 8-301; CLASS 1; GRADE 1; EA-9390; LOT# JH2EAA8895.<BR>VACUUM BAGGED REPAIR; CHECKED VACUUM BAG FOR LEAKS; VACUUM BAG CHECKED GOOD USING VACUUM GAUGE ID: ATS2441; CAL DUE DATE: 08/2023. SET REPAIR TO CURE USING HOT BONDER MACHINE ID: NCX000526; CAL DUE DATE: 11/2023.<BR>WORK ACCOMPLISHED IAW SRM 51-70-04-2R-9 PAR 4.J-M.[13] FABRICATED FOIL PLY OUT OF BMS8-289 LOT#1511320-1 AND INSTALLED USING BMS8-301 TY1 LOT#JH2EAI8895. VACUUM BAGGED; LEAK CHECK GOOD USING VACUUM GAUGE ID:E11543 DUE:09/23 AND SET TO CURE USING HOT BONDER ID:ATS883 DUE:10/23 IAW SRM 51-70-14-2R-3 PARA A.(3-4); (5(A)); AND (11(A-K)).;

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