Former Grumman and Gulfstream Aerospace chief test pilot Robert Smyth, 84, died Tuesday at his home at the Leeward Air Ranch in Ocala, Fla. During his career at Grumman, he test flew the F9F Cougar, F11F Tiger, A-6A Intruder, F-14A Tomcat and the Gulfstream I twin turboprop, in addition to helping with the Apollo Lunar Module development in the 1960s. Smyth joined Gulfstream in 1981 and retired in 1993 as vice president of operations. His family is planning a remembrance ceremony.