Service difficulty report · Stiffener · Boeing 7377H4

Difficulty date
March 28, 2021
Submitted
May 3, 2021
Operation
Air carrier
Aircraft
N407WN
Make and model
Boeing 7377H4
Aircraft serial
29817
Aircraft time
66,792 hours, 39,453 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 HORIZONTAL STABILIZER RIB #4 (STAB STA 120.30) STIFFENER #2 CRACKED AT BOTTOM AREA (223-DOT 127). / CUT-OUT CRACKED AREA AT LEFT HORIZONTAL STABLIZER RIB #4 (STAB.STA 120.30) STIFFENER #2 BOTTOM AREA AND INSTALLED REPAIR PARTS PER B737-700 SRM 55-10-09-2R-4 REPAIR 4

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