Airplane Flight Manual Supplement

190-00682-02 Rev. C Hawker Beechcraft C90A and C90GT King Air
Page 87 of 95
PROPELLER SYNCHROPHASER
A push button ON/OFF switch is located on the instrument panel below the pilot’s PFD that
turns the propeller synchrophaser ON and OFF. To turn the propeller synchrophaser ON,
push the PROP SYNC switch. A green ON annunciator will illuminate when the system is on.
To turn the propeller synchrophaser OFF, push the PROP SYNC switch.
Refer to the Systems Description section in the airplane’s original Pilot’s Operating Handbook and FAA
Approved Airplane Flight Manual for a description of the synchrophaser and its operation.
ELECTRICAL SYSTEM
INVERTERS
The two solid-state inverters are not needed with the G1000 system and have been removed.
POWER DISTRIBUTION
There are no changes to the electrical power generation, power feeders, control, or fault protection.
Only the Avionics power distribution has changed.
AVIONICS/ELECTRICAL EQUIPMENT BUS CONNECTION
LEFT GENERATOR BUS
(GEN No. 1)
CENTER BUS
RIGHT GENERATOR BUS
(GEN No. 2)
AVIONICS AVIONICS AVIONICS
PFD1/ GIA 1 Cooling Fan Avionics Annunciator PFD2 / GIA 2 Cooling Fan
No. 2 Avionics Bus
PFD 1 – Secondary Power
No. 3 Avionics Bus
COM 2 AHRS 1 - Secondary Power Data Link
AUDIO 2 ADC 1 - Secondary Power Radio Altimeter (OPT)
XPDR 2 GIA 1 - Secondary Power ADF
RADAR WX-500 Stormscope (OPT)
DME Skywatch Traffic (OPT)
AFCS SERVOS
ELECTRICAL ELECTRICAL ELECTRICAL
L Gen Bus (Bus Tie & Meter
Indication)
Generator Reset
R Gen Bus (Bus Tie & Meter
Indication)
L Generator Control Panel (1) R Generator Control Panel (1)
L Generator Field & Sense (1) R Generator Field & Sense (1)
L Generator Loadmeter (1) R Generator Loadmeter (1)
ENGINE ENGINE
L Engine Fuel Control Heater R Engine Fuel Control Heater
L Chip Detector R Chip Detector
L Main Anti-ice (Ice Vane) R Main Anti-ice (Ice Vane)
R Standby Anti-Ice (Ice Vane) L Standby Anti-Ice (Ice Vane)