Service difficulty report · Seal · Boeing 7377H4

Difficulty date
April 17, 2026
Submitted
April 21, 2026
Operation
Air carrier
Aircraft
N497WN
Make and model
Boeing 7377H4
Aircraft serial
32479
Aircraft time
70,716 hours, 42,284 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 SLIDING SEAL CRACKED. R & R LT HORIZONTAL STABILIZER FWD UPPER SLIDING SEAL IAW AMM 53-31-31.

More about the Boeing 737-7H4