Aircraft Performance Group (APG), (Booth No. 4163) which provides runway-performance analysis services, has announced release of an iPad app that consolidates several preflight functions. APG, based in Castle Rock, Colo., said its iPreflight app can quickly calculate available payload for a given city pairing, considering takeoff and landing performance limitations, manufacturers’ weight-and-balance requirements and flight-planning constraints.<o:p></o:p>