Service difficulty report · Seal · Boeing 7377H4

Difficulty date
January 19, 2024
Submitted
January 22, 2024
Operation
Air carrier
Aircraft
N412WN
Make and model
Boeing 7377H4
Aircraft serial
29818
Aircraft time
73,632 hours, 43,796 cycles
Part
Seal
Part number
UNKNOWN
Condition
Cracked
Location
Zn 300 Stabilize
Stage of operation
IN
How discovered
9
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

R/H HORIZONTAL STABILIZER UPPER FORWARD SLIDING SEAL HAS A 3' CRACK ON THE FORWARD LOWER SIDE WHERE IT MEETS THE SLIDING SEAL TRACK.<[01] R&R RH HORIZONTAL STABILIZER UPPER FWD SLIDING SEAL REF. AMM 53-31-31.

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