Service difficulty report · Seal · Boeing 7377H4

Difficulty date
August 28, 2025
Submitted
October 1, 2025
Operation
Air carrier
Aircraft
N909WN
Make and model
Boeing 7377H4
Aircraft serial
32458
Aircraft time
56,758 hours, 34,420 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

LEFT HORIZONTAL STAB, FWD UPPER SLIDE SEAL CRACKED. REMOVED AND REPLACED THE LT HORIZONTAL STAB FWD UPPER SLIDE SEAL IAW AMM 53-31-31-000-802, & AMM 53-31-31-400-802.

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