P&W awarded F135 LRIP 4 contract Posted on May 17, 2011 by alert5 The U.S. Department of Defense has awarded Pratt & Whitney a $1.13 billion contract for F135 production engines. Related posts (Automatically Generated): F-35 program hit by engine snags Pratt & Whitney delivers first F135 Engine for Low Rate Initial Production Lot 3 Pratt & Whitney sees slower sales growth due to F-35 revamp House panel voted to revive F136 engine Boeing gets P-8A LRIP contract Contractor delivers first new E-8C Joint STARS production engine