Home Business Pratt & Whitney expects approval for GTF engine on A220 jet in... Business Pratt & Whitney expects approval for GTF engine on A220 jet in spring By Genpie - January 15, 2020 121 0 Facebook Twitter Google+ Pinterest WhatsApp A software update for the GTF engine on Airbus’ smallest jet, the A220, is expected in the spring, pending regulatory approval, a top executive at United Technologies Corp’s Pratt & Whitney aircraft engine division said on Wednesday.