6HA zero-zero ejection seat as fitted in the Hawker Siddeley Kestrel* "VTOL" a 1966 "Flight" advertisement for Martin-Baker zero-speed zero altitude ('zero-zero') ejections seats
* Ramsden J, "Martin-Baker: 50 years, 5,000 lives, 50,000 seats" "FLIGHT International", 26 May 1979 p1733-1735==Zunanje povezave==* Martin-Baker Aircraft Company Limited* Electronic Library, see "Propulsion Systems Contribution to Success of Aircrew Emergency Escape Systems" (PDF File, pay site)* "Exit In Extremis" a 1948 "Flight" article* "At low altitudes each second is vital - 150ft.