Pratt & Whitney Awarded $3.8B Contract Modification For F135 Engines; Total Lots 18-19 Production Value Reaches $6.6B To Support F-35 Lightning II Program

Company investing heavily to speed production and meet growing global demand

EAST HARTFORD, Conn., March 31, 2026 /PRNewswire/ -- Pratt & Whitney, an RTX (NYSE:RTX) business, has been awarded a $3.8 billion contract modification for lots 18-19 of the F135 engine, which powers all three variants of the F-35 Lightning II.

This modification definitizes lot 18 F135 propulsion system production, as well as provides for the production of F135 propulsion systems in support of lot 19 F-35 aircraft production. The total value of the F135 lots 18-19 contract awarded to Pratt & Whitney is $6.6 billion.