Service difficulty report · Panel · Boeing 7378H4

Difficulty date
April 14, 2022
Submitted
May 2, 2022
Operation
Air carrier
Aircraft
N8321D
Make and model
Boeing 7378H4
Aircraft serial
36687
Aircraft time
31,939 hours, 14,343 cycles
Part
Panel
Part number
193CL
Condition
Delaminated
Location
Wing To Body
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

FAIRING PANEL 193CL DELAMINTAED FWD EDGE / [01] IDENTIFIED FAIRING PANEL 193CL IAW SRM 53-40-70-0I-1 FIGURE 2; SHEET 1; TABLE 2; ITEM 9.<BR><BR>UPON INSPECTION OF PANEL FOUND DELAMINATION TO EXTEND OVER HONEYCOMB CORE ON FWD EDGE. DAMAGES ARE OUT OF ALLOWABLE DAMAGE LIMITS REMOVED DAMAGE FROM OUTER SURFACE EDGEBAND; INNER SURFACE EDGEBAND; AND 2.6' BY 1.7' OF FULL DEPTH HONEYCOMB CORE AND INNER SURFACE FACE SHEET INSTALLED ALL REPAIR PARTS IAW SRM 51-70-05-2R-7 PAR 4E;H.;VACUUM BAGGED REPAIR PARTS; CHECKED FOR LEAKS USING PRESSURE GAGE ID:ATS2438 S/N:UNKNOWN; SET TO CURE USING OVEN ID:E11561 S/N:UNKNOWN; MONITORED USING HEATCON HOTBONDER ID:ATS885 S/N:15112558 IAW SRM 51-70-05-2R-7 PAR 4F;I-J.; COMPLETED CURE AND UNBAGGED IAW SRM 51-70-05-2R-7 PARA 4F; J;[08] SANDED CORE PLUG SMOOTH WITH INNER SURFACE FACE SHEET; CLEANED; FABRICATED INNER SURFACE REPAIR PLIES USING BMS 8-79 ST 1581 LOT#1488444-1; AND BMS 5-129 GR5 LOT#1483751-1; INSTALLED; VACUUM BAGGED AND CHECKED FOR LEAKS USING PRESSURE GAGE ID:ATS2438 S/N:UNKNOWN IAW SRM 51-70-05-2R-7 PAR 4F-I. BAGGED FOR OVEN CURE.;[09] CURED REPAIR PLIES USING OVEN ID:E11561 S/N:UNKNOWN; MONITORED USING HEATCON HOTBONDER ID:ATS885 S/N:15112558; UNBAGGED IAW SRM 51-70-05-2R-7 PAR 4J-KAPPLIED AND CURED BMS 10-21 TY III LOT#S21H278 CONDUCTIVE COATING USING THERMOMETER ID:ATS2208 S/N:4330740WS; CONDUCTIVITY TESTED GOOD USING MULTIMETER ID:ATS1658 S/N:34000350 IAW AMM 51-21-71-370-801 PAR 3D(1-4;7A

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