SDR CALA2016010400006

Service difficulty report · Rib · Boeing 737724

Difficulty date: December 31, 2015
Submitted: January 4, 2016
Operation: Air carrier
Aircraft: N39726
Make and model: Boeing 737724
Aircraft serial: 28796
Aircraft time: 54,906 hours, 18,688 cycles
System (JASC): 5511 · Horizontal Stabilizer, Spar/Rib
Part: Rib
Part number: 182A5301
Condition: Cracked
Location: Lt Horiz Stab
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

LEFT HORIZONTAL STABILIZER IN SPAR RIB HAS A CRACK ON THE STIFFENER AT LOWER TRANSITION RADIUS, STAB STATION 92.70, STIFFENER NR 2. INSTALLED ANGLE & T SECTION REPAIR ON IN SPAR RIB, STIFFENER NR 2, IAW SRM 55-10-09 REPAIR 4 & ECRA 5510-02600.