Emergency Static Air System (Optional); Vacuum System; Stall Warning System - Beechcraft Musketeer Sport III A23-19 Pilot Operating Handbook

Section VII
Systems Description
BEECHCRAFT Sport III
Musketeer A23-19, 19A
EMERGENCY STATIC AIR SYSTEM (OPTIONAL)
An alternate (emergencyj static air source may be installed
to provide air for instrument operation should the normai
static ports become blocked . The alternate source is
installed on the pilot's lower left sidewall. Turning the red
handle to the ON EMERGENCY position allows cabin air
into the system . Refer to EMERGENCY PROCEDURES
section for proper use of the system . For Airspeed Calibra -
tion and Altimater Correction, refer to PERFORMANCE
section.
VACUUM SYSTEM
Vacuum for air -driven gyroscopic flight instruments and
other air-driven equipment is supplied by a n engine-driven
vacuum pump . An adjustable relief valve centrols suction
by bleed i ng outside air into the vacuum pump .
A suction gage indicates system vacuum in inches
ot
mer-
cury . This instrument is located on the pilot's side
ot
the
instrument panel. The vacuum should be maintained
within the green arc for proper operation of the air-driven
instruments.
STALL WARNING SYSTEM
A stall warning horn located in the overhead speaker eon-
sole is tactory set to sound a warning 5 to 7 mph above a
stall condition and continues steadily as the airplane ap -
proaches a complete stall . The stall warning horn,
triggered by a sensing vane on the leading edge
ot
the left
wing, is equally effective in all flight configurations and at
all weights.
7-26
October 1 979