04/22/16
Overview
There are two flight crew seats installed in the flight compartment. One is installed on the left side for pilot and the other is installed on the right side for the copilot.
It also can have an optional seat for an observer. This seat can be put in the center of the flight compartment, aft of the flight crew seats.
The flight crew seats are the same for the pilot and the copilot, but the controls are on opposite sides. You can adjust the seats in height and for forward and aft movement. They can be adjusted for lumbar support and hold weight equally.
07/26/16
Flight Crew Seat Controls
A small control lever on the outboard side of the seat controls the seat height. The height adjusts to up to 6 in. (15.24 cm). The headrest also adjusts for height. The armrests adjust as well to a maximum of 16 in. (40.64 cm) down and 14 in. (35.56 cm) up. A wheel below each armrest permits the pilot/copilot to adjust the angle of the armrest.
Each seat has the controls for height, movement in longitudinal and lateral directions, seat recline and lumbar support. The armrests are also adjustable.
Lumbar support is on the lower part of the seat which contains three different pads. Three knobs on the outboard side of the seat serve to adjust these pads.
The back of the seat is adjustable between 8 degrees behind the vertical to 38 degrees. The adjustment is made in increments of 3 degrees by a small control lever on the outboard side of the seat.
Forward and aft movement of the seat is controlled by a lever on the rear of the flight crew seat, on the lower inboard side. The seats are attached on two seat tracks installed on the flight compartment floor. Each seat moves along two tracks which are attached to the flight compartment floor. The outboard seat track has a primary stop block installed at FS251.00 (approximately). The stop prevents too much movement of the seat in the aft direction. The total movement of the seat is 15 in. (38.19 cm) in 1 inch (2.54 cm) increments.
For information regarding Crew Seat Forward/Aft Adjust Lever Cable Breakages, select ‘Troubleshooting Tips’ from ATA 25-00-00 Equipment/Furnishings description main page.
Note:
It is possible for a crew member to lose contact with the rudder pedals if there is too much movement in the aft direction.
The flight crew seats can move laterally from the aft position. The pilot seat will move to the right, and the copilot seat to the left. Lateral seat travel is 4 in. (10.16 cm) in one smooth move. A lever on the lower inboard side of the seat controls seat travel.
The flight crew seats have safety qualities, including safety straps and a life jacket below the seat.
Improved Crew Seats
SB700-25-024 for the Global Express and XRS, and SB700-1A11-25-020 for the Global 5000 introduced improved crew seats featuring improved comfort for headrest, armrest, bottom cushion, and back lumbar.
04/22/16
Inertia Reel Control
The inertia reel control is for the adjustment of the shoulder straps into the usual attached harness configuration. It has two control positions, "locked" and "released". In the locked position, the shoulder strap length is set. When the inertia reel control is released, the shoulder straps can move freely. Sudden acceleration will tighten the shoulder straps and lock them. The control is connected to the inertia reel with a flexible cable that is sealed in the rear of the seat. The inertia reel control is located on the rear of the flight crew seat, on the inboard side.
Inertia Reels
The inertia reels are cylindrical units which contain a shoulder strap and an internal helical-spring lock device. There are two inertia reels which, as an assembly, adjust the shoulder straps. They are controlled by the inertia reel control. The inertia reels are contained in the center,top rear part of the seat.
The spring lock device will lock the shoulder straps in position when there is a sudden forward, vertical movement. It will also lock the shoulder straps during acceleration. The inertia reels will stay locked until the load on the shoulder straps decreases. The reel is then released to permit free movement of the shoulder strap assembly.
Safety Straps
The safety harness is an assembly of five different straps that are a part of the flight crew seat. The safety straps connect to the circular quick-release buckle. There are two shoulder straps at the top of the seat which, at the aft ends, are attached to the two inertia reels. The inertia reels are adjusted by the inertia reel control. There are two waist straps at the lower level and a crotch belt. The waist straps and crotch belt are tightened and loosened as necessary.
The shoulder strap assembly is made from two lengths of nylon/terylene webbing, stitched together to make an assembly with three ends. The aft end is attached to the inertia reel. The forward ends of each strap has an eye-end fitting which, when put into the quick-release buckle, makes part of the safety harness.
The two adjustable waist (or lap) straps are made when opposing left and right strap assemblies are put together. The straps are made from nylon/terylene webbing. The forward ends of each waist strap also includes a hook-type fitting which is put into the quick-release buckle.The aft ends of each waist strap has a hook fitting with a lock bar for attachment to the seat pan structure.
The adjustable crotch belt is made from nylon/terylene webbing. The forward end of the crotch belt also includes a hook-type fitting which is put into the quick-release buckle. The aft end of the crotch belt has a hook fitting with a lock bar for attachment to the seat pan structure.The crotch belt adjustment is made through the self-locking loop buckle.
Quick-Release Buckle
The quick-release buckle is attached to the outboard straps of the safety harness assembly. It is used as the central point of attachment for the eye-end fittings of the shoulder harness and the safety straps. The quick-release buckle has a circular housing which includes a spring-loaded lock/unlock mechanism and a harness release that is not attached.
The eye-end fittings are automatically locked in when put into the quick-release buckle. They are released when the unlock mechanism on the buckle is turned in one of two directions. It is also possible to disengage the straps of the shoulder harness independently when the release lever is pushed in the forward direction. The release lever is installed at the top of the quick-release buckle.
07/26/16
System Operation
Height Adjustment
To adjust the height of the seat, the UP/DOWN lever, installed on the outboard side of the seat pan is operated. The height of the seat can be adjusted to a maximum of 6 in (15.24 cm) from the lowest position. It is also possible to adjust the headrest for height by pulling up on the headrest assembly.
Fore and Aft Adjustment
To adjust the fore and aft position of the seat along the two seat tracks, the FWD/AFT CONTROL switch, which is installed on the lower aft inboard side of the seat is operated. The total movement of the seat is 15 in (38.19 cm) in 1 in (2.54 cm) increments.
Lateral Adjustment
To adjust the lateral position of the seat, the INBD/OUTBD lever, installed on the lower inboard side of the seat, is operated. It is fromthe aft position that the flight crew seats can move laterally. The pilot´s seat will move to the right, the copilot´s to the left. Lateral seat travel is 4 in (10.16 cm) done in one smooth movement.
Recline Adjustment
To adjust the recline position of the seat, the RECLINE lever, installed on the lower inboard side of the seat is operated. The back of the seat is adjustable between 8 degrees behind the vertical to 38 degrees. The adjustment is made in increments of 3 degrees.
Lumbar Adjustment
To adjust the three inflatable lumbar support pads, the three buttons on the outboard side of the seat are pushed to add or remove air from the applicable pad as necessary. Push and hold the applicable button until you get the necessary comfort level.
Armrest Adjustment
To adjust the angle of the armrest, the adjustment control (wheel), installed on the forward face below each armrest is turned. The armrests are adjustable to a maximum of 16 in (40.64 cm) down and 14 in (35.56 cm) up.
