Two more OEMs–Spectrum Aeronautical and Viking Air– have selected Honeywell’s Primus Apex avionics suite. Spectrum selected Apex for its S-40 Freedom midsize jet and Viking Air for the resurrected DHC-6-400 Twin Otter. This brings to four the number of airplanes that will feature the Primus Apex suite, the other two being Grob’s SPn and the new Pilatus PC-12 NG, which is the first Primus Apex-equipped airplane to enter service. Viking Twin Otter deliveries are scheduled to begin next year, and certification of the Spectrum S-40 Freedom is planned for the same time frame.