King Air C90GTi, Руководство по подготовке пилотов

Страница: 272 / 557

C L I M B ) i n d i c a t o r ( Fi g u r e 1 2 - 1 0 ) , wh i c h
continuously indicates the rate at which the
cabin pressure altitude is changing.
The cabin pressure switch (Figure 12-11),
to the left of the pressurization controller
o n t h e p e d e s t a l , i s p l a c a r d e d C A B I N
PRESS–DUMP–PRESS–TEST. When this
s w i t c h i s i n t h e D U M P ( f o r w a r d l e v e r
locked) position, the safety valve is held
o p e n , s o t h a t t h e c a b i n w i l l d e p r e s s u r i z e
and/or remain unpressurized. When it is in
t h e P R E S S ( c e n t e r ) p o s i t i o n , t h e s a f e t y
valve is nor mally closed in flight, and the
outflow valve is controlled by the pressur-
i z a t i o n c o n t r o l l e r, s o t h a t t h e c a b i n w i l l
pressurize. When the switch is held in the
s p r i n g - l o a d e d T E S T ( a f t ) p o s i t i o n , t h e
safety valve is held closed, bypassing the
landing gear safety switch, to facilitate test-
i n g o f t h e p r e s s u r i z a t i o n s y s t e m o n t h e
g r o u n d . C i r c u i t b r e a k e r s f o r t h e s y s t e m
(Figure 12-12) are on the copilot’s side panel
under the heading ENVIRONMENTAL.
KING AIR C90GTi/C90GTx PILOT TRAINING MANUAL
12-9
FOR TRAINING PURPOSES ONLY
12
PRESSURIZA
TION
Figure 12-10. Cabin Climb Indicator
Figure 12-11. Cabin Pressure Switch
Figure 12-12. Environmental System
Circuit Breakers