Hawker 800 XP, Pilot Training Manual

Page: 304 / 504

OPERATING
PROCEDURES
The airplane is certificated for flight in icing
conditions. However, the airplane must be
free of snow and ice before takeoff.
Whether icing conditions are present or not,
all SCREEN HEAT and PILOT/VANE HEAT
switches shall always be switched on before
takeoff and remain on throughout the flight.
If the airplane is cold soaked at – 10° C, wind-
screen heat should be on for 5 minutes prior
to takeoff. If the aircraft is cold soaked at –20°
C, windscreen heat should be on for 15 min-
utes prior to takeoff. If the times are not met,
the airspeed is restricted to 257 KIAS below
8,000 feet. This restriction also applies if a
windscreen becomes inoperative in flight or
is turned to OFF in flight and has cold soaked
at – 10° C in flight.
If the OAT or SAT is +5° C or below and is as-
sociated with conditions of high humidity (mist
or fog reducing visibility to approximately
3,000 feet), or with a wet-surface runway, the
ENG ANTICE and ENG IGNITION switches
must be switched on. These switches should be
switched off when conditions permit.
NOTE
To avoid further throttle adjustments
due to slight rise in ITT, the ENG
ANTICE switches should be selected
to the ON position before takeoff
power is set.
When takeoff is accomplished with engine
anti-icing in use, ITT must be monitored dur-
ing takeoff and initial climb. Allowance should
be made for the adverse effects on perfor-
mance when using the engine anti-icing sys-
tem. If necessary, the airframe anti-icing
systems may also be operated for takeoff.
10-12
FOR TRAINING PURPOSES ONLY
HAWKER 800 XP PILOT TRAINING MANUAL
FlightSafety
international
ZONE 1
VENTILATION
INLET
ANTI-ICING
ON-OFF VALVE
PRESSURE
SWITCH
UPPER
PANEL
DISTRIBUTION
DUCT
PICCOLO
TUBE
ANTI-ICING
PIPE FROM
COMBUSTION
SECTION
INLET
COWL
ANTI-ICING HOT AIR FLOW
VENTILATION AIR FLOW
FWD COWL FIREWALL
AFT COWL
FIREWALL
ENGINE
ACCESSORY
SECTION
(ZONE 1)
LOWER
ACCESS
DOOR
AFT COWL
ASSEMBLY
FAN DUCT
EXHAUST AIR
FAN EXHAUST DUCT
INNER SKIN
FAN EXHAUST DUCT
OUTER SKIN
ENGINE
COMBUSTION
SECTION ZONE 2
Figure 10-8. Powerplant Ventilation