tor, which can be set at NORM, 100%, or
EMER (Figure 17-6). With the regulator set in
the NORM position, the regulator provides
automatic oxygen dilution from Sea Level to
33,000 feet, above this level the regulator will
provide 100% oxygen in the NORM position.
Rotating the selector knob to 100% will pro-
vide 100% oxygen at any altitude. The EMER
position provides 100% oxygen with positive
pressure. Positive pressure will also be pro-
vided in the NORM or 100% positions at cabin
altitudes above 39,000 feet.
The Puritan-Bennett mask, incorporates a
purge valve, which will automatically bias
open when the mask is used in conjunction with
smoke goggles. The EMER position can be
used to quickly purge the goggles of smoke.
The Eros mask/regulator contains a red, up-
down oxygen selector lever to provide 100%
(UP) or normal (DOWN) flow and a PRESS
TO TEST, rotating, two-position (half-dot and
full-dot), EMERGENCY button/knob (Figure
17-6). With the oxygen selector lever ex-
tended (down) and the PRESS TO TEST but-
ton/knob rotated to the half-dot position, the
mask delivers diluted oxygen from Sea Level
to 30,000 feet cabin altitude, 100% oxygen
above 30,000 feet, and automatic pressure
breathing above approximately 37,000 feet.
The Eros regulator can be selected to deliver
100% oxygen at any altitude by depressing
( p u s h i n g u p ) t h e o x y g e n s e l e c t o r l ev e r.
Pressure breathing is selectable at any altitude
by rotating the EMERGENCY/PRESS TO
TEST knob to the full-dot position. With this
position selected, 100% oxygen will be sup-
plied under pressure at any cabin altitude for
respiratory protection from smoke and fumes.
17-8
FOR TRAINING PURPOSES ONLY
L E A R J E T 4 5
P I L O T T R A I N I N G M A N U A L
FlightSafety
international
EMER
TRANSMIT
VHF 1
NAV 1
NAV 2
ADF 1
ADF 2
HF 1
HF 2
COMM 3
PA
VHF 2
MIC
MASK
BOTH
I
D
V
O
I
C
E
1
2
2
1
DME
MLS
SIDETONE
MKR
MUTE
INPH
HEADPHONE
SPEAKER
DIGITAL AUDIO PANEL
HI
SENS
LO
SENS
SPKR
ON
SPKR
OFF
Honeywell
Figure 17-8. Audio Control Panel
Figure 17-7. Crew Mask Storage Area