Service difficulty report · Skin · Boeing 7377H4

Difficulty date
April 26, 2023
Submitted
May 30, 2023
Operation
Air carrier
Aircraft
N416WN
Make and model
Boeing 7377H4
Aircraft serial
32453
Aircraft time
70,967 hours, 42,001 cycles
Part
Skin
Condition
Cracked
Location
Nr 1 Slat
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

#1 SLAT LEADING EDGE NOSE SKIN IS CRACKED JUST I/B OF ACTUATOR FITTING<CUT AND REMOVED 3EA CRACKS ON SKIN AS FOLLOWS; -O/B 2ND FWD FASTENER ON ACTUATOR RIB FITTING IAW SRM 57-42-01-2R-8 REPAIR 8 REQUIREMENTS.<BR>-O/B 1ST FASTENER ON I/B DOWN STOP RIB IAW SRM 51-10-02-0G-0; CUTOUT DIMENSIONS L= 0.6875' X W = 0.6875'. <BR>-O/B 1ST FASTENER OF I/B DOWN STOP RIB ON THE BEAR STRAP IAW SRM 51-10-02-0G-0; CUTOUT DIMENSIONS L= 0.500' X W = 0.500'.;[#1 SLAT PN: 114A5010-3; SN: 000430 REMOVED IAW AMM 27-81-21-000-801.;[15] INSTALLED #1 SLAT IAW AMM 27-81-21-400-801 STEPS 3H(1)(A);(B)1)<BR>TORQUE WRENCH ID:PER2331 DUE:03/2024] INSTALLED #1 SLAT IAW AMM 27-81-21-400-801 STEPS 3.H(1.B(2;3))<BR>VERIFIED FIT OF DOWN STOP ASSEMBLY BOLT IN MAIN TRACK IS GOOD.<BR>VERIFIED SLAT MAIN TRACK CANS FREE OF FOD.<BR>TOOL ID ATS2842 DUE 01/2024; INSTALLED #1 SLAT IAW AMM 27-81-21-400-801 STEP 3.H(3;5-8).<BR>TOOL ID ATS2842 DUE 01/2024 CONNECTED #1 SLAT ACTUATOR TO #1 SLAT IAW AMM 27-81-21-400-801 STEP 3.H(9; 10(A-C)).<BR>TOOL ID ATS2321 DUE 06/2023;[22] CONNECTED #1 SLAT ACTUATOR TO #1 SLAT IAW AMM 27-81-21-400-801 STEP 3.H(10(D)).;#1 SLAT INSTALLED IAW AMM 27-81-21-400-801 STEP 3.H(11;13-14) AND ADJUSTED AT INTERMEDIATE POSTION IAW AMM 27-81-21-400-801 STEP 3.H(15) AND AMM 27-81-00-820-803 STEPS 4.G(2-4); 4.H(4)<BR>ATS2849 DUE 01/2024

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