Service difficulty report · Panel · Boeing 7377H4

Difficulty date
March 12, 2022
Submitted
April 11, 2022
Operation
Air carrier
Aircraft
N468WN
Make and model
Boeing 7377H4
Aircraft serial
33858
Aircraft time
58,378 hours, 34,580 cycles
Part
Panel
Condition
Debonded
Location
Fuselage
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

PANEL 193CR HAS SMALL DISBOND ON INNER SURFACE OVER CORE; MARKED / [01] IDENTIFIED PANEL MATERIAL IAW SRM 53-40-70-0I-1; TABLE 2; FIG. 2; ITEM 9. <BR><BR>FOUND DAMAGE TO BE OUT OF ALLOWABLE LIMITS IAW SRM 53-40-70-1A-1; PARA. 4.B.(5). <BR><BR>AREA IS TO BE REPAIRED ACCORDING TO SRM 51-70-05-2R-2; AS REQUIRED BY SRM 53-40-70-2R-1; PARA. 4.D; TABLE 201; FIG. 201.<BR><BR>REMOVED DELAMINATED SKIN AND PROTECTIVE FINISHES; TAPER SANDED REPAIR AREA; TAP TESTED AREA - NO DISBONDS NOTED; NO CONTAMINATION WAS NOTED; ALL ACCORDING TO SRM 51-70-05-2R-2; PARA'S 4.A THRU 4.C.;[02] VALIDATED APPLICABILITY OF SRM 51-70-05-2R-2.;[03] VERIFIED CORRECTIVE ACTION ENTRIES 1 & 2.;[04] PREPARED EXPOSED CORE FOR APPLICATION OF POTTING COMPOUND; APPLIED BMS 5-28; TY7 COMPOUND (LOT# AK1GP5868K); CURED APPLIED COMPOUND; AND SANDED COMPOUND FLUSH WITH SURROUNDING SKIN; ALL ACCORDING TO SRM 51-70-05-2R-2; PARA. 4.D; AND SRM 51-70-05-2R-11; PARA'S 4.A THRU 4.D.<BR><BR>RESIN MIXING SCALE ID: ATS2275; S/N: P1662216.;[05] TEMPERATURE GUN ID: ATS2208; S/N: 43300740WS<BR><BR>CORRECTION FOR STEP 4.;[06] CLEANED AND DRIED REPAIR AREA; APPLIED REPAIR PLIES FABRICATED FROM BMS 8-79; ST 1581 FIBERGLASS(LOT# 1474971-1) AND BMS 5-129; TY4; GR5 ADHESIVE (LOT# 1483858-1); ACCORDING TO SRM 51-70-05-2R-2; PARA'S 4.F AND 4.G.

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