RIYADH — The Aviation Investigation Bureau (AIB) has begun investigations to determine the circumstances that damaged the landing gear of a Saudi Arabian Airlines Boeing 777 while landing at Riyadh's King Khaled International Airport on Thursday. Saudia Flight SV713 took off from Jinnah International Airport in Karachi, Pakistan, with 266 passengers and 14 crewmembers on board. The plane landed in Riyadh at 11 a.m. without incident despite the damage, AIB Director General Capt. Ibrahim Salman Al-Kashi said in a statement on Thursday.