SDR SWAA2025103116726

Service difficulty report · Skin · Boeing 7377H4

Difficulty date: September 20, 2025
Submitted: October 31, 2025
Operation: Air carrier
Aircraft: N907WN
Make and model: Boeing 7377H4
Aircraft serial: 36619
Aircraft time: 57,081 hours, 33,302 cycles
System (JASC): 5754 · Leading Edge Devices
Part: Skin
Condition: Cracked
Location: Zone 500 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

CRACK LOWER SURFACE OF LEADING EDGE SLAT NR 4, NOSE SKIN AT ACTUATOR, AROUND FASTENER AT LT WING. PERFORMED HFEC AND ROTOTEST INSPECTION ON HOLES LOC. LOWER SURFACE OF LEADING EDGE NR 4 SLAT NOSE SKIN AT ACTUATOR & CRACK INDICATION NOT FOUND IAW NDT MANUAL PART 6, 51-00-00, PROCEDURE 16, AND NDT MANUAL PART 6, 51-00-00 PROCEDURE 23.

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