Service difficulty report · Panel · Boeing 7377H4

Difficulty date
March 6, 2023
Submitted
April 18, 2023
Operation
Air carrier
Aircraft
N281WN
Make and model
Boeing 7377H4
Aircraft serial
36528
Aircraft time
51,516 hours, 31,045 cycles
Part
Panel
Condition
Pulled
Location
Zn 500 Left 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

L/W T/E PANEL 561BB HAS SEVERAL PULLED FASTENER HOLE ON AFT END OF PANEL (MARKED)<[01] IDENTIFIED PART AND MATERIAL IAW SRM 57-51-01-0I-1 FIGURES 1+3; TABLE 3; ITEM [9].<BR>FOUND DAMAGE TO FASTENER HOLES TO BE OUT OF ALLOWABLE DAMAGE LIMITS IAW SRM 57-51-01-1A-1 PAR 4.B (5).<BR>A PERMANENT REPAIR WILL BE ACCOMPLISHED IAW SRM 51-70-04-2R-9 AS DIRECTED PER SRM 57-51-01-2R-1 PAR 4.B (2) AND TABLE 202.;[02] REMOVED DAMAGED AND CONTAMINATED FIBERGLASS PLIES AT DAMAGED FASTENER HOLES. PREPARED AND CLEANED AREAS FOR REPAIR. WORK ACCOMPLISHED IAW SRM 51-70-04-2R-9 PAR 4.A-C.;[03] VALIDATED REPAIR PER SRM 51-70-04-2R-9;[04] VERIFIED CORRECTIVE ACTIONS 1-3<BR><BR>VERIFIED MEASUREMENTS TABLE<BR><BR>VALIDATED REPAIR PER SRM 51-70-04-2R-9;[05] FILLED DAMAGED FASTENER HOLES WITH A MIXTURE OF LAMINATING RESIN AND CHOPPED FIBERS USING RESIN BMS 8-301; CLASS 1; EA 9390; LOT# JH2EAA8895 AND CHOPPED FIBERS LOT# 1437038-1 AND SET TO CURE. WORK ACCOMPLISHED IAW SRM 51-70-04-2R-9.;[06] CURED LAMINATING RESIN AND CHOPPED FIBERS SLURRY IAW SRM 51-70-04-2R-9 PAR 4.F.<BR><BR>CALIBRATED TOOL USED:<BR>HOT BONDER MACHINE: ID: NCX000526; CAL DUE DATE: 11/2023

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