Leerjet 35/36 Developed for Training Purposes 4C-11
February 1998
Environmental Systems
Pressurization System
Conditioned air entering the cabin through the air distribution
ducts pressurizes the cabin. Cabin pressurization is then con-
trolled and limited by exhausting the air through the cabin air
exhaust and safety valve.
450 Pressurization System
On aircraft with the 450 pressurization system, normal pressur-
ization is controlled with the altitude controller and rate selector
on the copilot’s lower panel. Prior to takeoff, the AUTO-MAN
switch is set to AUTO, the cabin air switch to NORM, the air-
craft altitude selector knob to cruise altitude, and the IN NOR-
MAL/OUT DEFOG knob pushed in. The cabin rate-of-climb
may be set by varying the rate knob toward INCR or DECR.
Cabin altitude is monitored with the cabin altimeter, which
includes a cabin pressure differential scale.
510 Pressurization System
On aircraft with the 510 pressurization system, normal pressur-
ization is controlled with the cabin pressure controller that
includes the rate controller. Prior to takeoff, the AUTO-MAN
switch is set to AUTO, the cabin air switch to ON, and the air-
craft altitude selector knob to cruise altitude. The cabin rate-
ofclimb may be set by varying the rate knob toward INCR or
DECR and is monitored by the cabin rate-of-climb indicator.
Cabin altitude is monitored with the cabin altimeter that
includes a cabin pressure differential scale.
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