Service difficulty report · Seal · Boeing 7377H4

Difficulty date
November 11, 2025
Submitted
November 13, 2025
Operation
Air carrier
Aircraft
N915WN
Make and model
Boeing 7377H4
Aircraft serial
36888
Aircraft time
57,438 hours, 34,808 cycles
Part
Seal
Condition
Cracked
Location
Zone 300
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

RT HORIZONTAL STABILIZER FORWARD UPPER SLIDING SEAL HAS VERTICAL CRACKS PARALLEL TO BOTH THE FORWARD AND AFT EDGES. REMOVED AND REPLACED THE STABILIZER TO BODY UPPER FRONT R/H SLIDING SEAL PER AMM 53-31-31.

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