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♦ Snow includes snow grains
CAUTION: THE TIME OF PROTECTION WILL BE SHORTENED IN HEAVY WEATHER
CONDITIONS. HEAVY PRECIPITATION RATES OR HIGH MOISTURE CONTENT,
HIGH WIND VELOCITY OR JET BLAST MAY REDUCE HOLDOVER TIME BELOW
THE LOWEST TIME STATED IN THE RANGE. HOLDOVER TIME MAY BE
REDUCED WHEN AIRPLANE SKIN TEMPERATURE IS LOWER THAN OAT.
CAUTION: SAFEWING MP IV 2001 TYPE IV FLUID USED DURING GROUND DEICING/
ANTI-ICING IS NOT INTENDED FOR AND DOES NOT PROVIDE
PROTECTION DURING FLIGHT.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
ADVERSE WEATHER/ABNORMAL
ATMOSPHERIC CONDITIONS
APPENDIX E
E-34 FAA APPROVED
GIV-SP 29 January 2002
PROCEDURE
The following airplane surfaces and areas require special attention during ground de-icing.
HORIZONTAL STABILIZER/ELEVATOR
Remove any ice or snow contamination from the leading edge of the stabilizer. Remove all
accumulations from the upper surface of the stabilizer and elevator. If using the spray method,
ensure that runoff of fluids are away from the elevator balance bay. This prevents melted
snow/ice from accumulating in this area and re-freezing in flight.
VERTICAL STABILIZER/RUDDER
The leading edge of the vertical stabilizer as well as the side panels and rudder should be cleaned
of any snow/ice accumulation. The gap between rudder and stabilizer should also be free of
snow/ice accumulation.
FUSELAGE
Remove snow top-to-bottom. Avoid spraying heated fluids directly on cabin and cockpit
windows. Ensure that the radome area is clean. If using mechanical means, special care should
be taken to avoid damage to antennas. Remove any fluid runoff from cockpit windows and
radome prior to departure. Avoid spraying directly on pitot tubes, static ports, and Angle-of-
Attack probes. Do not spray into APU inlets, engine inlets or ram air inlets.
CAUTION: IF APU/ENGINES ARE RUNNING WHEN SPRAYING OF DE-ICING
FLUIDS IS IN PROGRESS, TURN BLEED AIR OFF AND CLOSE OUTFLOW
VALVE AND DOORS.
WING
Clean wing from wing tip to wing root. If using the spray method, ensure that runoff is away
from aileron balance bay area to prevent accumulation of melted snow/ice in this area. Ensure
that leading edge is free of ice. The Pilot-in-Command should conduct a hands-on inspection to
verify leading edge, upper and lower wing surfaces are clean.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
ADVERSE WEATHER/ABNORMAL
ATMOSPHERIC CONDITIONS
APPENDIX E
FAA APPROVED E-35
13 September 2000 GIV-SP
ENGINE
Snow/ice removal from the engine inlet should be accomplished using mechanical means. Any
frozen deposits that may be bonded to inlet/intake surfaces or fan blades must be removed by hot
air. Do not spray de-icing fluid directly into the engine core.
LP Fan must be verified to be free to rotate. If not the Engine must be pre-conditioned prior to
start.
CAUTION: DO NOT USE DE-ICING FLUID. AFTER DE-ICING ENGINE, START
ENGINE(S) IMMEDIATELY TO PREVENT ANY RE-ICING CONDITION.
SELECT ENGINE ANTI-ICE ON AFTER ENGINE IS STARTED.
LANDING GEAR
The tires, wheels, brakes, struts, side braces and uplocks should be free of snow/ice.
CAUTION: DO NOT USE DE-ICING FLUID ON THE BRAKES AND/OR WHEELS.
DOORS
Main door and baggage compartment door seals, hinges and tracks should be free of snow/ice.
Ensure proper operation to prevent re-freezing in flight.
ANTI-ICING
If desired, apply ground Anti-Icing process immediately after the airplane is deiced. This
involves applying a mixture of SAE or ISO Type II and water to critical surfaces of the airplane.
This step may increase "Holdover" Time(s) between Anti-Icing and estimated departure time.
Any time the recommended Holdover Time is exceeded, a Pre-Takeoff Inspection is
required. Refer to Holdover Time(s) Tables for Type I/Type II Fluids.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
ADVERSE WEATHER/ABNORMAL
ATMOSPHERIC CONDITIONS
APPENDIX E
E-36 FAA APPROVED
GIV-SP 13 September 2000
PREFLIGHT DE-ICING INSPECTION CHECKLIST
Perform Preflight De-icing Inspection IMMEDIATELY following Ground De-icing or during
Anti-Icing process.
All items below should be free of snow, ice and/or frost accumulation.
1. Conduct a "hands-on" inspection to verify that all surfaces are clean. Wing leading edges,
upper and lower surfaces, trailing edges, around flight control actuators, and push rods.
2. Vertical and horizontal stabilizers including leading edges, side panels, and upper/lower
surfaces.
3. Flaps, flap tracks and flap screwjacks
4. Ground and Flight Spoilers
5. Ailerons, Elevator and Rudder
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湾4飞机飞行手册AFM Gulfstream IV AIRPLANE FLIGHT MANUAL 2(70)
