Service difficulty report · Seal · Boeing 7377H4

Difficulty date
August 1, 2025
Submitted
August 5, 2025
Operation
Air carrier
Aircraft
N253WN
Make and model
Boeing 7377H4
Aircraft serial
32511
Aircraft time
62,315 hours, 37,391 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

LH HORIZONTAL STAB UPPER SLIDER SEAL IS CRACKED<[01] REMOVED AND REPLACED LH STABILIZER FRONT UPPER SPAR SLIDING SEAL IAW AMM 53-31-31. NO DEFECT NOTED;[02] C/W INSPECTION OF REMOVED AND REPLACED LH STABILIZER FRONT UPPER SPAR SLIDING SEAL; OPS CHECKED GOOD PER AMM 53-31-31

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