Service difficulty report · Rib · Boeing 7377H4

Difficulty date
October 17, 2023
Submitted
November 30, 2023
Operation
Air carrier
Aircraft
N231WN
Make and model
Boeing 7377H4
Aircraft serial
32499
Aircraft time
59,061 hours, 35,386 cycles
Part
Rib
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

LEFT HORIZONTAL STABILIZER INSPAR RIB ASSY. #3 (STB STA 111.10); STFFENER #4 AT LOWER AREA CRACK NOTED.<[01] REMOVED CRACK DAMAGE AND ACCOMPLISHED REPAIR AT LEFT HORIZONTAL STABILIZER INSPAR RIB ASSY. #3 (STB STA 111.10); STIFFENER #4 AT LOWER AREA AS PER SRM 55-10-09-2R-4.;[02] PERFORMED SME INSPECTION AND PAPERWORK AUDIT.;[03] RII -- VERIFIED STEPS 1 AND 2.;[04] CORRECTION: RII -- VERIFIED STEP 1.

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