SDR SWAA2022120971767

Service difficulty report · Rib · Boeing 7377H4

Difficulty date: November 16, 2022
Submitted: December 9, 2022
Operation: Air carrier
Aircraft: N791SW
Make and model: Boeing 7377H4
Aircraft serial: 27886
Aircraft time: 70,151 hours, 41,389 cycles
System (JASC): 5511 · Horizontal Stabilizer, Spar/Rib
Part: Rib
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

CRACK LEADING EDGE RIB ON THE L/E HSS 105.26, RT HORIZONTAL STAB. REJECTED RIB INSTALLATION ON RT HORIZONTAL STAB, DUE TO FOUND TOOL MARK LEADING EDGE SKIN. REPLACED THE RIB ON THE RT HORIZONTAL STAB IAW SRM 51-10-02, ITEM 9, AND DWG 186A1001, REV A, SHEET 10.

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