Service difficulty report · Stiffener · Boeing 7377H4

Difficulty date
April 14, 2024
Submitted
May 22, 2024
Operation
Air carrier
Aircraft
N474WN
Make and model
Boeing 7377H4
Aircraft serial
33861
Aircraft time
65,342 hours, 39,098 cycles
Part
Stiffener
Part number
UNKNOWN
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

RH HORIZONTAL STAB RIB #4; THIRD STIFFENER FROM BEHIND HAS A CRACK NEAR THE LOWER END. (PRONE AREA) STAB STA. 120.30 STIFFENER #2<[01] REPAIRED RH HORIZONTAL STABILIZER INSPAR RIB STAB. STA 111.10 THIRD STIFFENER FROM BEHIND IAW SRM 55-10-09-2R-5 REPAIR 5.;[02] VERIFIED CORRECTIVE ACTION COMPLETE WITH STEPS 1-8

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