Pratt & Whitney GKN Aerospace and Pratt & Whitney to explore additive manufacturing for F135 engine GKN Aerospace and Pratt & Whitney to explore additive manufacturing for F135 engine Pratt & Whitney 21 Jul 2026 British Airways chooses Pratt & Whitney engines for next A320neo fleet British Airways chooses Pratt & Whitney engines for next A320neo fleet British Airways 20 Jul 2026