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the air source for the air conditioning system.
Engine Bleed Air Switches.........................................................................................................OFF
APU Air Switch .......................................................................................................................... ON
Complete as much of the checklist as possible before starting engines, to avoid prolonged ground
operation.
TAXI
Limit the use of brakes as much as possible during taxiing, because cooling is reduced when
outside air temperatures are high. Idle reverse thrust can be used to reduce brake usage on clean
taxiways.
BEFORE TAKEOFF
To Preclude APU temperature transients and cabin pressurization surges, the following
procedures are recommended.
1. Engine Bleed Air Switches .................................................................................................. ON
2. APU Air Switch ..................................................................................................................OFF
3. APU..................................................................................................................AS REQUIRED
NOTE: Examine performance data thoroughly to determine the adverse effects of high
temperature on airplane performance.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
ADVERSE WEATHER/ABNORMAL
ATMOSPHERIC CONDITIONS
APPENDIX E
E-42 FAA APPROVED
GIV-SP 13 September 2000
TAKEOFF
Execute a normal takeoff
LANDING
Adhere to normal landing procedures. Avoid excessive use of brakes to prevent overheating.
TAXI
To achieve better cabin cooling during ground operation, it is recommended that APU be used as
the air source for the air conditioning system.
If APU air is selected ON after landing, select both Engine Bleed Air Switches OFF. This will
prevent thermal transients on the APU or possible damage to the APU when the power levers are
moved above idle.
PARKING
For airplanes without Brake Temperature Monitoring System Installed.
CAUTION: If landing required hard braking and hot brakes are suspected, do not set parking
brake. Chock nosewheel. Personnel should stay clear of main landing gear areas
until brakes have cooled.
For airplanes with Brake Temperature Monitoring System Installed.
NOTE: (1) For airplanes SN 1236, SN 1253 and subs. and airplanes with ASC 345 (Enhanced
Avionics), BTMS display is incorporated on the BRAKES system page.
(2) If landing required hard braking, monitor temperatures to ensure brake
temperatures have peaked and are decreasing. Note peak temperature for use in
determining turn around time and brake cooling requirements. See Appendix C for
Brake Kinetic Energy and Brake Cooling Chart data.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
ADVERSE WEATHER/ABNORMAL
ATMOSPHERIC CONDITIONS
APPENDIX E
FAA APPROVED E-43
13 September 2000 GIV-SP
BEFORE LEAVING THE AIRPLANE
Make sure that protective covers are installed promptly on pitot heads and intake and exhaust
ducts.
Install windshield protective sun screens on cockpit windows.
Close cabin window shades. If unable to close shade, ensure there are no pillows or material
items close to the window.
If the life rafts are expected to be exposed to temperatures above +53.5°C (130°F) it is
recommended that they should be removed from the airplane. At temperatures hotter than this,
the CO2 cartridge may discharge.
Close the entrance door.
DESERT OPERATION
Desert operation generally means operation in a very hot, dry, dusty, often windy atmosphere.
Under such conditions, sand and dust will often be found in vital areas of the airplane such as
hinge points, bearings, landing gear shock struts, and engine air inlet ducts.
Severe damage to the affected parts may be caused by the dust and sand. Position the airplane so
the jet blast will not expose other airplane, personnel, and ground equipment to blowing sand or
dust. The necessary operations under such conditions are given in the following paragraphs.
These procedures are in addition to the normal operating procedures in Section II.
BEFORE ENTERING THE AIRPLANE
Check exposed portions of shock strut pistons for dust and sand, and have them cleaned if
necessary.
Check all intake ducts for accumulation of dust and sand.
Make sure that the airplane has been thoroughly inspected for fuel and hydraulic leaks caused by
swelling of packings or expanded fittings.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
ADVERSE WEATHER/ABNORMAL
ATMOSPHERIC CONDITIONS
APPENDIX E
E-44 FAA APPROVED
GIV-SP 13 September 2000
　
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