Service difficulty report · Fitting · Boeing 7377H4

Difficulty date
May 5, 2026
Submitted
June 2, 2026
Operation
Air carrier
Aircraft
N477WN
Make and model
Boeing 7377H4
Aircraft serial
33988
Aircraft time
72,345 hours, 43,352 cycles
Part
Fitting
Condition
Cracked
Location
Zone 600
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 8 NOSE SKIN AT ACTUATOR LOC. AROUND FASTENER AT RT WING. SLAT 8 HAS BEEN REPLACED BECAUSE THE ACTUATOR FITTING WAS FOUND TO BE CRACKED IN TWO HOLES DURING THE ROTO TEST INSPECTION FOR SLAT REPLACEMENT.

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