Ejection Seat
Over 2200 Mk14 seats currently in service
Currently flying in F/A-18 and T-45
Ejection Seat
Over 2200 Mk14 seats currently in service
Currently flying in F/A-18 and T-45
Mk14 Ejection Seat
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 2,200 Mk14 ejection seats in service today. The seat has saved the lives of 101 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 continue 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, Switzerland and USA.
New Seat Installations & Retrofits
Looking to install a new seat into your aircraft? Let us help you find your perfect solution – check out our New Seat Installations & Retrofits page for more information.
Mk14 Ejection Seat
- Operating Ceiling: 50 000ft (15,250m)
- Minimum height/Speed: 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: 600 KIAS
- Parachute type: GQ Type 5000
- Parachute deployment: Rocket assisted
- Drogue parachute type: 57 in. (1.45 m) ribbon drogue
- Drogue deployment: Drogue deployment catapult, powered by cartridge generated gas and initiated by electrical signal from sequencer
- Harness type: Torso
- Ejection seat operation type: Ejection gun and multi-tube rocket pack incorporating lateral thrust rocket motor
- Ejection gun: Single with secondary cartridge
- Ejection initiation: Handle on seat bucket initiates gas operated seat
- Automatic backup unit: Yes
- Manual override handle: Yes
- Timers: Yes
- Seat adjustment: Up/down Actuator operated 28 Vdc
- Arm restraints: No
- Leg restraints: Yes, four garters
- Oxygen supply: Bottled emergency oxygen (attached to survival pack)
- Personal survival pack: Yes
- Aircrew services: Connection to main oxygen supply, mic/tel, anti-g supply and vent air
- Command ejection: Yes
- Canopy jettison: No
- Miniature detonating cord: Yes
Mk14 Ejection Seat
Featured in:
- T-45
- F-18
Mk14 Ejection Seat
- Handle is pulled / command ejection initiated
- Harness retraction unit operated
- Canopy jettisons/fractures
- Thermal batteries activate
- Catapult initiates
- Ballistic latches close, retaining multi-purpose initiator lanyard end fittings
- Seat moves up rails, top latch released, secondary cartridge fires when uncovered
- Emergency oxygen activates
- Radio beacon activates
- Command system quick-disconnect and seat services disconnect
- Legs restrained, leg lines disconnected from aircraft
- Multi-purpose initiators operate firing mechanisms
- Start switches close, electronic sequencer timing commences
- Barostatic Release Unit (BTRU) initiated
- Pitot heads deploy
- Underseat rocket motor fires
- Drogue deployment catapult fires, deploying drogue
Low speed, low altitude
- Drogue released
- Parachute deployment rocket fires
Medium and high speed, low altitude/all speeds, medium altitude
- Drogue stabilising and retarding seat
- Parachute deployment rocket fires
- Drogue released
All speeds, high altitude
- Drogue stabilising and retarding seat
- At pre-determined altitude, drogue is released and parachute
- deployment rocket fires
- (BTRU operates to provide backup if sequencer fails, manual override also available)
- Harness to seat connections release
- Parachute inflates, lifts aircrew and survival kit from seat and pulls sticker clips from clips causing aircrew and seat to diverge
- Parachute deployment rocket clears area
- Aircrew descends on parachute, survival kit retained
- Manual deployment of survival pack during descent if required
- Falling to end of dropline causes automatic inflation of liferaft
- Survival kit retained until water entry
- Manual initiation of liferaft inflation
Mk14 Ejection Seat
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 2,200 Mk14 ejection seats in service today. The seat has saved the lives of 101 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 continue 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, Switzerland and USA.
New Seat Installations & Retrofits
Looking to install a new seat into your aircraft? Let us help you find your perfect solution – check out our New Seat Installations & Retrofits page for more information.
Mk14 Ejection Seat
- Operating Ceiling: 50 000ft (15,250m)
- Minimum height/Speed: 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: 600 KIAS
- Parachute type: GQ Type 5000
- Parachute deployment: Rocket assisted
- Drogue parachute type: 57 in. (1.45 m) ribbon drogue
- Drogue deployment: Drogue deployment catapult, powered by cartridge generated gas and initiated by electrical signal from sequencer
- Harness type: Torso
- Ejection seat operation type: Ejection gun and multi-tube rocket pack incorporating lateral thrust rocket motor
- Ejection gun: Single with secondary cartridge
- Ejection initiation: Handle on seat bucket initiates gas operated seat
- Automatic backup unit: Yes
- Manual override handle: Yes
- Timers: Yes
- Seat adjustment: Up/down Actuator operated 28 Vdc
- Arm restraints: No
- Leg restraints: Yes, four garters
- Oxygen supply: Bottled emergency oxygen (attached to survival pack)
- Personal survival pack: Yes
- Aircrew services: Connection to main oxygen supply, mic/tel, anti-g supply and vent air
- Command ejection: Yes
- Canopy jettison: No
- Miniature detonating cord: Yes
Mk14 Ejection Seat
Featured in:
- T-45
- F-18
Mk14 Ejection Seat
- Handle is pulled / command ejection initiated
- Harness retraction unit operated
- Canopy jettisons/fractures
- Thermal batteries activate
- Catapult initiates
- Ballistic latches close, retaining multi-purpose initiator lanyard end fittings
- Seat moves up rails, top latch released, secondary cartridge fires when uncovered
- Emergency oxygen activates
- Radio beacon activates
- Command system quick-disconnect and seat services disconnect
- Legs restrained, leg lines disconnected from aircraft
- Multi-purpose initiators operate firing mechanisms
- Start switches close, electronic sequencer timing commences
- Barostatic Release Unit (BTRU) initiated
- Pitot heads deploy
- Underseat rocket motor fires
- Drogue deployment catapult fires, deploying drogue
Low speed, low altitude
- Drogue released
- Parachute deployment rocket fires
Medium and high speed, low altitude/all speeds, medium altitude
- Drogue stabilising and retarding seat
- Parachute deployment rocket fires
- Drogue released
All speeds, high altitude
- Drogue stabilising and retarding seat
- At pre-determined altitude, drogue is released and parachute
- deployment rocket fires
- (BTRU operates to provide backup if sequencer fails, manual override also available)
- Harness to seat connections release
- Parachute inflates, lifts aircrew and survival kit from seat and pulls sticker clips from clips causing aircrew and seat to diverge
- Parachute deployment rocket clears area
- Aircrew descends on parachute, survival kit retained
- Manual deployment of survival pack during descent if required
- Falling to end of dropline causes automatic inflation of liferaft
- Survival kit retained until water entry
- Manual initiation of liferaft inflation