Specifications

SECTION IV
MODEL 560 OPERATING INFORMATION
BIRD INGESTION PRECAUTIONS
Studies have indicated that bird strikes are most likely from the surface to approximately 4000 feet
AGL. As a precaution against engine flameout due to bird ingestion, it is recommended that the engine
igniters be ON when flying at or below 4000 feet AGL, or anytime the crew has reason to suspect that the
potential for a bird strike exists.
PASSENGER COMFORT
When parked during daylight in hot weather, it is suggested that the cabin window shades be closed to
reduce solar heat transfer. An optional exterior windshield cover performs the same function for the cockpit
and is very effective. To circulate cool air in the interior, the right engine may be started and the PRESS
SOURCE SELECT placed in GND. Turning the AUTO TEMP SELECT to MANUAL, and holding the
MANUAL toggle switch to MANUAL COLD for approximately 10 seconds will drive the temperature mixing
valve from full hot to full cold. Closing unused overhead outlets and placing the OVHD fan to HI will provide
maximum airflow to occupied seats. Return temperature control to AUTOMATIC to avoid freezing the water
separator and stopping airflow. Increased air circulation in the cockpit is available by turning on the DEFOG
FAN and turning the AIR FLOW DISTR (bias) valve to CKPT (cockpit). Operating the right engine above
idle RPM will increase airflow and air cycle machine efficiency.
The Freon air conditioner discharges conditioned air from floor mounted evaporator/blowers in the
forward and aft ends of the dropped isle, to provide rapid cabin cooling. The air conditioner is controlled by
a switch panel on the copilot’s instrument panel, and can be used on the ground or in flight up to 18,000
feet. The MODE, AC/BLO/OFF switch controls primary power to the system. The AC position turns on the
compressor and the forward blower. The BLO position disables the compressor but leaves the forward
blower on. The FWD BLOWER, HI/LO switch controls the forward blower speed when the MODE switch is
in AC or BLO. If the forward blower is inoperative, the system should not be operated. The AFT BLOWER
HI/OFF/LO switch controls the aft blower when the MODE switch is in AC or BLO. A COMP ON twist
dimmable light illuminates when the compressor is powered. The system may not be operated in the AC
mode above 18,000 feet. A ground unit, or at least one generator, must be on line to run the compressor.
An optional flood cooling system provides an air outlet grill on the upper aft pressure bulkhead to
supply a high-volume flow of conditioned bleed air to flood the cabin, for faster and more efficient cooling.
The system is controlled by an ON-OFF switch on the environmental control panel. When the switch is in
the ON position, conditioned bleed air is diverted through a line in the tailcone to an axial flow blower on the
top of the aft pressure bulkhead, then to the air outlet grill. The system can be used during ground
operation and in flight below 10,000 feet.
Increasing or decreasing engine bleed air extraction can cause a slight momentary bump in cabin
pressure. Always check power stabilized at idle when changing the PRESS SOURCE SELECT on the
ground.
I 56OMB-01 Configuration AA 4-21