Service difficulty report · Stiffener · Boeing 7377H4

Difficulty date
April 22, 2021
Submitted
June 3, 2021
Operation
Air carrier
Aircraft
N412WN
Make and model
Boeing 7377H4
Aircraft serial
29818
Aircraft time
65,852 hours, 38,836 cycles
Part
Stiffener
Condition
Cracked
Location
Horizontal Stab
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

LEFT HAND HORIZONTAL STABILIZER INSPAR RIB; AT STABILIZER STATION 120.30; 3RD VERTICAL STIFFENER IS CRACKED. / REPAIRED LEFT HAND HORIZONTAL STABILIZER INSPAR RIB AT STABILIZER STATION 120.30; 3RD VERTICAL STIFFENER AT LOWER END PER SRM 55-10-09-22-4

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