NEW : Pratt & Whitney says it 's ` ` involved fully with investigating . '' David and David 's wife , Joy , died in the plane crash Sunday in Nigeria . His family alleges the plane and its engines were defective . Washington ( CNN ) -- Before the crash , the company had issued a statement saying both engines had failed .
NEW : Pratt & Whitney says it 's ` ` involved fully with investigating . '' David and David 's wife , Joy , died in the plane crash Sunday in Nigeria . His family alleges the plane and its engines were defective . Before the crash , the company had issued a statement saying both engines had failed .