Battery; Alternator - Beechcraft Musketeer Sport III A23-19 Pilot Operating Handbook

Section VII
Systems Description
ELECTRlCAL SYSTEM
BEECHCRAFT Sport III
Musketeer A23-19 . 19A
The system circuitry is the single-wire , ground-return type,
with the airplane structure used as the ground return. The
BADERY & ALT, ALT, FUEL BOOST, and magneto/ start
switches are located on the left subpanel. The circuit
breaker panel , located on the right subpanel , contains the
protective circuit-breakers for the various electrical sys -
tems . Some switch-type circuit breakers a re located on the
left subpanel.
BADERY
A 12-volt battery is located in the aft fuselage . Battery
servicing procedures are described in the HANDLING ,
SERVICING AND MAINTENANCE Section .
ALTERNATOR
The alternator maintains its full -rated output at cruise
engine rpm, and uses a voltage regulator to adjust
alternator output.
Dual switches are required to activate the alternator
circuit. The switch placarded BADERY
&
ALT, when
placed in the ON position, will only activate the battery
circuit. When t his switch is on and the Al T switch i s
placed in the ON position , the alte rnator is excited by
power from the airplane battery. When the BADERY &
ALT switch is in the OFF position , the alternator will be off
regardless of the ALT switch position.
7-20
October 1979