What We Do
Mk14 (NACES) Ejection Seat
Initially developed for the US Navy and now in use worldwide.
Over 2,500 Mk14 seats currently in service.
Currently flying in F/A-18 and T-45
The Mk14 ejection seat, more commonly known as SJU17A and NACES (Navy Aircrew Common Ejection Seat), is currently in service in the F/A-18 and T-45 Goshawk. There are approximately 2,500 Mk14 ejection seats in service today. The seat has saved the lives of 138 aircrew to date.
Martin-Baker was awarded the NACES contract by the US Navy in May 1985. The intent of the programme was to develop a high-performance, high-technology ejection seat which would integrate with several aircraft types, thus providing a significant commonality benefit for the customer.
The first production standard Mk14 flew in an F-14D Tomcat in February 1990. Deliveries continued at a regular rate each month to support overseas sales of the F-18 and the new variant of Super Hornet.
The Mk14 is currently operated by the following countries: Finland, Kuwait, Malaysia, Canada, Australia, Switzerland and USA.
|Zero/zero in near level attitude
|Crew boarding mass range
|NACES original – 79.1 to 117.4 kg; NACES P3I – 62.7 to 131.7
|Crew size range
|NACES original – 3rd to 98th percentile; NACES P3I – JPATS muti-variate body size cases 1 to 7
|Maximum Speed for ejection
|GQ Type 5000
|Drogue parachute type
|57 in. (1.45 m) ribbon drogue
|Drogue deployment catapult, powered by cartridge generated gas and initiated by electrical signal from sequencer
|Ejection seat operation type
|Ejection gun and multi-tube rocket pack incorporating lateral thrust rocket motor
|Single with secondary cartridge
|Handle on seat bucket initiates gas operated seat
|Automatic backup unit
|Manual override handle
|Up/down Actuator operated 28 Vdc
|Yes, four garters
|Bottled emergency oxygen (attached to survival pack)
|Personal survival pack
|Connection to main oxygen supply, mic/tel, anti-g supply and vent air
|Miniature detonating cord