Service difficulty report · Skin · Boeing 7377H4

Difficulty date
October 18, 2022
Submitted
November 14, 2022
Operation
Air carrier
Aircraft
N403WN
Make and model
Boeing 7377H4
Aircraft serial
29815
Aircraft time
72,717 hours, 43,173 cycles
Part
Skin
Condition
Cracked
Location
Rt Wing Slat
Stage of operation
IN
How discovered
V
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

RIGHT WING LOWER SURFACE OF THE EDGE SLAT NOSE SKIN TWO CRACKS AROUND FASTENERS HOLES NEXT TO SS 322 ON SLAT NR 7. CRACK MEASURES 0.600 IAW SRM 51-40-02-0G-0. PERFORMED ROTO INSP ON EXISTING HOLES OF RT WING LOWER SURFACE OF THE EDGE SLAT NOSE SKIN AROUND FASTENER HOLES ON SLAT 7 IAW NDT PART 6 51-00-00 PROC 16. CRACK CONTINUES INTO BOTH FASTENERS FROM ORIGINAL CRACK. PERFORMED COUNTERSINK INSP ON EXISTING HOLES IAW NDT PART 6 53-30-00 PROC 3. CRACK CONTINUES INTO BOTH FASTENERS FROM ORIGINAL CRACK. REINSTALLED AFT COVER AND SEAL RETAINER FOR ACCESS IAW SRM 51-40-02-0G-0. REPAIR ACCOMPLISHED ON CARD TTG8Q00FTVA5.

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