At the 2017 International Defence Exhibition and Conference (IDEX), Bell Helicopters announced that the Pakistan Army Aviation Corps (PAA) will begin receiving its AH-1Z Viper attack helicopters in 2017. As per aviation journalist Alan Warnes, an initial batch of three helicopters will be delivered in 2017, while the next nine are scheduled for 2018. The U.S. approved the sale of 15 AH-1Z to Pakistan in April 2015. Under the US $952 million contract, the Pakistan Army was to receive the aircraft with a training, logistics and maintenance support package as well as 1,000 AGM-114R Hellfire II laser-guided air-to-surface missiles. Pakistan began ordering its AH-1Z in August 2015 (with an initial order of two or three), with another nine ordered in April 2016. Considering that the approved sales agreement did not outline options, it is possible – if not likely – that Pakistan will order the remaining three in a later tranche. Pakistan’s AH-1Zs will be equipped with Lockheed Martin AN/AAQ-30 Target Sight System (TSS) electro-optical/infrared (EO/IR) pods, Thales TopOwl helmet-mounted display (HMD) systems, Orbital ATK AN/AAR-47 missile warning systems (MAWS), BAE AN/ALE-47 airborne countermeasures dispenser suites, Northrop AN/APR-39C(v2) radar warning receivers (RWR), and General Dynamics M-197 20mm cannons. As part of its attack helicopter fleet modernization plans, the Pakistan Army is also procuring four Mil Mi-35M assault helicopters from Russia. These helicopters are expected to be delivered in 2017, and the PAA may procure an additional 16 over the long-term. The PAA is also examining the Turkish Aerospace Industries (TAI) T-129 and Changhe Aircraft Industries Corporation (CAIC) Z-10, one of which may be selected to compliment the AH-1Z.