Service difficulty report · Stiffener · Boeing 7377H4

Difficulty date
April 3, 2024
Submitted
May 9, 2024
Operation
Air carrier
Aircraft
N475WN
Make and model
Boeing 7377H4
Aircraft serial
32474
Aircraft time
65,737 hours, 39,139 cycles
Part
Stiffener
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

LH HORIZONTAL STABILIZER RIB AT STAB STA 129.50 IS CRACKED AT 2ND STIFFENER<[01] CUT AND REMOVED CRACK DAMAGE ON LEFT HAND HORIZONTAL STABILIZER INSPAR RIB AT STAB STA 129.50 AT 2ND STIFFENER FROM FRONT SPAR AND INSTALLED REPAIR IAW SRM 55-10-09-2R-4 REPAIR 4.;[02] VERIFIED ALL STEPS AND CORRECTIVE ACTION ITEMS; CARD COMPLETE.

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