Exterior Lighting; Environmental Systems; Cabin Heating - Beechcraft Musketeer Sport III A23-19 Pilot Operating Handbook

BEECHCRAFT Sport III
Musketeer A23-19, 19A
SectionVII
Systems Description
EXTERIOR LIGHTING
The switches for all of the exterior lights a re located on the
pilot's right subpanel. Each circuit is protected by a circuit
breaker switch , circuit breaker, or fuse . The exterior lights
consist of navigation lights on the wing tips and rudder, a
Ianding light on the left outboard wing and a rotating
beacon . The Ianding light can be used for approach and
taxiing . For longer battery and lamp life, use the Ianding
light sparingly; avoid prolonged operation which could
cause overheating during ground maneuvering .
NOTE
Particularly at night, reflections from rotating
anti-collision lights or strobe lights on clouds,
dense haze or dust can produce optical illu-
sions and intense vertigo . Such lights, when
installed, should be turned off before entering
an overcast; their use may not be advisable
under instrument or limited VFR conditions .
ENVIRONMENTAL SYSTEMS
CABIN HEATING
Air for warming the cabin and defrosting the windshield
enters through an intake on the lower cowl forward bulk-
head and passes through the heater and into a mixer box
where it is blended with cold air to obtain the desired cabin
temperatura . Hot or cold air may enter the cabin through
the firewall outlets . The knob marked CABIN AIR regulates
the quantity of air antering the cabin through this firewall
outlet. With the CABIN AIR knob in , pull out the CABIN
HEAT knob for heated air and push it in for fresh air . There
are 2 outlets for cabin heat distribution . Pull out the
DEFROST knob for maximum defrost. Under extremely
cold conditions, heating in the back seats can be improved
by
partiaiły
pull i ng t he defrost knob.
October 1979
7-23