page_title: Martin-Baker Mk.1
section_title: Operation sequence
hierarchical_section_title: Martin-Baker Mk.1 / Operation sequence
caption_attribution_description: English: Martin-Baker Mk.1C ejection seat on display at the Royal Air Force Museum London.
context_page_description: The Martin-Baker Mk.1 is a British ejection seat designed and built by Martin-Baker. Developed in the late 1940s it was the first in the line of production Martin-Baker seats for military aircraft. Ground and air testing of earlier designs resulted in the first successful test ejection of a company employee in July 1946. A seat type designed for the Saunders-Roe company was known as the Pre-Mk.1.
context_section_description: Operating the face blind firing handle initiated firing of the main gun located at the rear of the seat, the main gun being a telescopic tube with two explosive charges that fired in sequence. As the seat moved up its guide rails an emergency oxygen supply was activated.
  As the seat moved further up and out of the aircraft a lanyard attached to the cockpit floor fired a steel rod, known as the drogue gun, this extracted two small parachutes to stabilise the seat's descent path. The occupant then released themselves from the seat harness and operated the main parachute manually by pulling a ripcord.
caption: Martin-Baker Mk.1C ejection seat on display at the Royal Air Force Museum London
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