Service difficulty report · Seal · Boeing 7377H4

Difficulty date
November 5, 2025
Submitted
November 7, 2025
Operation
Air carrier
Aircraft
N463WN
Make and model
Boeing 7377H4
Aircraft serial
32467
Aircraft time
70,652 hours, 42,469 cycles
Part
Seal
Condition
Cracked
Location
Zn 300 Stabilize
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

LEFT HORIZONTAL STAB FWD UPPER SLIDING SEAL HAS TWO VERTICAL CRACKS ALONG LEADING EDGE. R & R THE CRACKED LT HORIZONTAL STAB FWD UPPER SLIDING SEAL IAW AMM 53-31-31.

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