Hoover, who lived in Palos Verdes Estates, California, died early yesterday, said Bill Fanning, a close family friend for many years and fellow pilot.
"He was every pilot's icon," Fanning said, recalling his friend as one of the premier test pilots of the 1950s and '60s. "Bob tested everything. He flew them all."
When the National Air and Space Museum conferred its highest honour on Hoover in 2007, the museum noted that Jimmy Doolittle, leader of the famed 1942 bomber raid on Japan, had once described Hoover as "the greatest stick-and-rudder man that ever lived."
Hoover, who began flying in 1937 at Berry Field in Nashville, Tennessee, almost came to an early end. While serving in the Army's 52nd Fighter Group in Sicily during World War II, he flew more than 50 missions before being shot down.
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He survived and spent months in a prisoner-of-war camp before he escaped, stole a German fighter plane and flew to safety in The Netherlands.
Hoover also tested the XFJ-2 Fury, which was developed for the Navy and Marine Corps, and the F-86 Sabre, an Air Force fighter, among more than 300 types of aircraft he flew in his career, according to the National Air and Space Museum.
He later brought his flying prowess to the public in aerobatic performances using such aircraft as North American Aviation's P-51 Mustang and Aero Commanders.
With both engines off he would do a loop, roll, 180-degree turn and land.
In the early 1990s, the Federal Aviation Administration pulled Hoover's medical certificate for failing a neurological exam that followed a performance at Aerospace America air show in Oklahoma City.
Hoover fought the decision, and even went to court, and in 1995 he received a restricted medical certificate.
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