In aerodynamics, pitch-up is a severe form of stall in an aircraft, at transonic speeds the aerodynamic loads can become so high as to break up the aircraft, as occurred in 1964 when which type of supersonic fighter-bomber, used by the United States Air Force Thunderbirds broke up in mid-air?
Republic F-105 Thunderchief
Title: Pitch-up
Passage: In aerodynamics, pitch-up is a severe form of stall in an aircraft.  It is directly related to inherent properties of all swept wings, and seen primarily on those platforms.  Unlike conventional low-speed stalls, pitch-up can occur at any speed, and are especially dangerous when they take place in the transonic; at these speeds the aerodynamic loads can become so high as to break up the aircraft, as occurred in 1964 when a F-105 Thunderchief of the USAF Thunderbirds broke up in mid-air.
Title: Lloyd W. Newton
Passage: Lloyd W. "Fig" Newton (born December 24, 1942) is a retired United States Air Force four-star general who served as Commander, Air Education and Training Command (COMAETC) from 1997 to 2000.  He was also the first African-American pilot in the U.S. Air Force Thunderbirds.
Title: Republic F-105 Thunderchief
Passage: The Republic F-105 Thunderchief was a supersonic fighter-bomber used by the United States Air Force.  The Mach 2 capable F-105 conducted the majority of strike bombing missions during the early years of the Vietnam War; it was the only U.S. aircraft to have been removed from combat due to high loss rates.  Originally designed as a single-seat, nuclear-attack aircraft, a two-seat Wild Weasel version was later developed for the specialized Suppression of Enemy Air Defenses (SEAD) role against surface-to-air missile sites.  The F-105 was commonly known as the "Thud" by its crews.
Republic F-105 Thunderchief Pitch-up