Service difficulty report · Wedge · Boeing 7378H4

Difficulty date
November 15, 2022
Submitted
November 29, 2022
Operation
Air carrier
Aircraft
N8512U
Make and model
Boeing 7378H4
Aircraft serial
38816
Aircraft time
20,066 hours, 9,602 cycles
Part
Wedge
Condition
Delaminated
Location
Lt Wing Te Flap
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

LEFT WING I/B MAIN FLAP T/E WEDGE LOWER SURFACE IS DELAMINATED. (MARKED) / [01] IDENTIFIED PANEL IAW SRM 57-53-02-0I-1 FIGURE 2 SHEET 4 TABLE 2 ITEM 30<BR><BR>DAMAGE EXCEEDS ALLOWABLE DAMAGE LIMITS IAW SRM 57-53-01-1A-1 PAR.4 A(7)(A)2)<BR><BR>DAMAGE IS TO BE REPAIRED IAW SRM 57-53-01-2R-7 AND SRM 51-70-10-2R-4.<BR><BR>REMOVED DISBONDED LOWER SURFACE SKIN IAW SRM 57-53-02-2R-7 PARA 4.B AND SRM 51-70-10-2R-4 PARA 6 & 7. HONEYCOMB CORE IS IN GOOD CONDITION. TOTAL DAMAGE SIZE IS 49 SQIN WITH THE FWD EDGE OF DAMAGE IN A CIRCULAR CHAPE.; 05] FABRICATED REPAIR DOUBLER AND SKIN FILLER FROM PRE-PRIMED 0.020' 7075 T6 ALUMINUM (LOT# 1470922-1) IAW SRM 51-70-10-2R-0; PARA. 8.A. & SRM 57-53-01-2R-7 PARA.4 C-D<BR><BR>ACCOMPLISHED SURFACE PREP USING BMS 5-162; TY1 (LOT# 2122E) (BOEGEL); APPLIED AND CURED BONDING PRIMER BMS 5-89 (LOT# 5110236-1); ALL IAW SRM 51-70-10-2R-0; PARA'S 11.A; 11.B; 11.E; 14; AND 15.<BR><BR>APPLIED REPAIR DOUBLER USING BMS 5-101; TY 2; GR 10 ADHESIVE (LOT# 1490482-1); VACUUM BAGGED REPAIR AREA FOR HEAT BLANKET CURE; LEAK CHECKED GOOD USING VACUUM GAUGE ID:ATS2107 DUE:04/2023 IAW SRM 51-70-10-2R-0; PARA. 18. & PARA. 20 B(2) & SRM 57-53-01-2R-7 PARA.4 G;

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