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All Surfaces ......................................................... CHECK/FREE FROM FROST, ICE OR SNOW
The wing including leading edges, all control surfaces, tab surfaces and balance panel cavities,
wing trailing edge, flight control actuators, cable runs, and push rods must be free of ice or snow.
Check control balance cavities for drainage after snow removal as puddled water may refreeze in
flight.
APU Inlet......................................................... CHECK/CLEAR OF IMPACTED ICE OR SNOW
Engine Inlets.....................................................CHECK/CLEAR OF INTERNAL ICE OR SNOW
Check that APU air inlet and cowling inlet inlet are free of ice or snow and the Engine LP
Compressor rotates freely.
Fuel Tanks Vents......................................................................CHECK/FREE OF ICE OR SNOW
Check accessible fuel tank vents. All traces of ice or snow should be removed.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
ADVERSE WEATHER/ABNORMAL
ATMOSPHERIC CONDITIONS
APPENDIX E
E-4 FAA APPROVED
GIV-SP 13 September 2000
Pitot Heads and Static Ports ....................................................................................CLEAR OF ICE
Water rundown resulting from snow removal may refreeze immediately forward of static ports
and cause an ice buildup which causes disturbed airflow over the static ports and erroneous static
reading even though static ports themselves are clear.
Landing Gear.................................................................................................................. CHECKED
Landing gear doors unobstructed and free of impacted ice or snow.
Check brakes, wheels, and wheel wells for snow, slush, or ice. Clean with mechanical means.
Use hot air for frozen brakes. Avoid chemical deicer.
NOSE STRUT ADVERSE WEATHER SERVICE
At extreme cold ambient temperatures, the possibility exists that the nose landing gear strut may
bottom out during heavy braking. The following chart provides recommended nose strut
pressures for cold weather operations.
NOTE: This chart is for checking and adjusting strut service pressure only and not for full strut
servicing.
The chart indicates the pressures in the strut for a specific strut extension versus the effects of
ambient OAT. This is based upon the strut being serviced at a standard day temperature, 248
psig in the strut with 13.04 inches of chrome on jacks.
As the strut is compressed or the airplane settles on the struts, the pressure in the strut will
increase. Full compression of the strut from 13.04 to 2.34 inches, will compress the existing 248
psig up to 1552 psig. Simply stated, as temperature in a sealed vessel or chamber rise, the
pressure will rise and vice versa.
Should an airplane experience a -40°C (-40°F) cold soak, and require shock strut servicing, the
chrome or strut extension may be used to determine the required nitrogen charge.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
ADVERSE WEATHER/ABNORMAL
ATMOSPHERIC CONDITIONS
APPENDIX E
FAA APPROVED E-5
13 September 2000 GIV-SP
This chart is recommended nose strut servicing to operate into cold conditions.
Severe Cold Weather Operation (T < ,-17.8°C (0°F)
• Interpolate between service temperatures for proper service pressure •
Cold Srvc - Cold Ops Stnd Day Srvc - Cold Ops Hot Day Srvc - Cold Ops
Srvc Temp: -40°F/-40°C 70°F/21°C 110°F/43°C
"Chrome" Strut Pressure Strut Pressure Strut Pressure
(inches) (psig) (psig) (psig)
13.04 188 248 271
11.24 220 291 318
9.64 260 342 376
8.34 300 399 440
7.34 350 457 505
6.54 400 516 573
5.84 450 582 648
5.30 500 645 721
4.94 550 695 780
4.54 600 760 856
4.24 650 817 924
3.94 700 884 1004
3.64 750 962 1098
3.44 800 1022 1172
3.24 850 1090 1255
3.04 900 1167 1351
2.94 950 1210 1405
2.84 1000 1257 1463
2.74 1050 1306 1526
2.64 1100 1360 1595
2.44 1150 1483 1753
2.34 1200 1552 1844
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
ADVERSE WEATHER/ABNORMAL
ATMOSPHERIC CONDITIONS
APPENDIX E
E-6 FAA APPROVED
GIV-SP 13 September 2000
Air Conditioning Inlets and Exits.........................................................................................CLEAR
Verify the air inlets and exits are clear of ice or snow. Check outflow and safety relief valves,
free of impacted ice or snow and unobstructed. If APU operating, check outflow valve full
open; water rundown may refreeze in the safety valve static port; verify safety valve static port is
clear.
BATTERIES
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湾4飞机飞行手册AFM Gulfstream IV AIRPLANE FLIGHT MANUAL 2(56)
