SDR CALA2026090219204

Service difficulty report · Rib · Boeing 737924ER

Difficulty date: September 2, 2026
Submitted: September 3, 2026
Operation: Air carrier
Aircraft: N39415
Make and model: Boeing 737924ER
Aircraft serial: 32826
Aircraft time: 57,202 hours, 20,545 cycles
Engine: Cfmint CFM567B27
System (JASC): 5511 · Horizontal Stabilizer, Spar/Rib
Part: Rib
Part number: 182A54013
Condition: Cracked
Location: Zone 300
Stage of operation: IN
How discovered: V
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

FOUR CRACKS AT FASTENER HOLES FOUND ON LT HORIZONTAL STAB RIB HSS 147.90, LOWER FLANGE, ONE AT INBD ROW & THREE AT OTBD ROW FWD OF STIFFENER 3, CRACK DIRECTION 12 O'CLOCK. COMPLETED INSTALLATION OF RIB 8 IAW SRM 51-40-02-0G-0, DWG 182A3001, DWG 182A4001, DWG 182A1500, AND ESR 12-15657, REV P1.