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5. If no fire is visible in cabin and it is necessary to overcome smoke or fumes, manually
DEPLOY passenger oxygen masks, visually check for deployment, and advise passengers to
DON masks.
6. If smoke cannot be eliminated, depressurize cabin at 15,000 ft. or lower by selecting
MANUAL on AUTO/MANUAL switch and turning Manual Pressure Control Knob
clockwise to OPEN position.
If the smoke abates:
7. Cabin pressurization may be regained by selecting AUTO on AUTO/MANUAL switch.
If smoke is coming through air conditioning system:
8. If cockpit-to-cabin door is available, it may be used to isolate smoke source to either cabin
or cockpit air conditioning system.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
SECTION 4
EMERGENCY
PROCEDURES
FAA APPROVED 4-65
31 May 2000
9. It may also be possible to isolate smoke source to either left or right ECS/Engine bleed air
system. Proceed as follows:
A. ECS Isolation Valve ............................................................................................CLOSED
B. Left Bleed ....................................................................................................................OFF
If smoke continues:
C. Left Bleed ..................................................................................................................... ON
D. Right Bleed..................................................................................................................OFF
If smoke continues:
10. Emergency Descent ..................................................................................... AS APPLICABLE
11. Ram Air Switch ................................................................................................................... ON
12. Left Bleed ...........................................................................................................................OFF
13. If source of smoke or fumes cannot be positively located and isolated, even though smoke
has dissipated, land at the nearest suitable airport.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
SECTION 4
EMERGENCY
PROCEDURES
4-66 FAA APPROVED
30 May 2002
4-23-20: Smoke In Baggage Compartment, Aft Galley, Lavatory Or Right Hand Avionics:
If smoke is detected either physically or by Smoke/Flame detector:
1. Oxygen Mask (100%) and Smoke Goggles.......................................................................DON
2. No Smoking Sign................................................................................................................. ON
3. Galley/Cabin Master Switches............................................................................................OFF
4. FLIGHT/LANDING Switch ........................................................................................ FLIGHT
NOTE: If smoke is penetrating cabin area and there is no visible sign of fire, manually deploy
passenger oxygen masks, check for deployment and advise passengers to DON masks.
5. Consider EMERGENCY DESCENT procedure, if applicable. If level flight is necessary,
maintain cruise speed.
6. Smoke Mask and Portable Oxygen (Investigating Crew member)....................................DON
7. Smoke Source .................................................................................................. INVESTIGATE
NOTE: If investigating a Right Hand Avionics Bay (Radio Rack) Detector Warning (for
airplanes SN 1000 and sub with ASC 268), when installed, remove the Avionics Bay
Cover to gain access to those compartments. If there is no smoke apparent, investigate
all compartments within the cabin as the smoke may be originating in any area which
exhausts air to the outflow valve.
NOTE: Close all cabin doors between cockpit and baggage compartment. It is permissible to
leave baggage compartment door open while locating and eliminating source of smoke.
8. Baggage Door Seal Depressurization:
A. Baggage Door Handle .....................................................................OPEN 45 DEGREES
(for airplanes SN 1000 thru 1155 without ASC 157).
NOTE: Baggage door seal may be depressurized by rotating baggage door handle 45
degrees. Do not open baggage door as it will impair smoke evacuation.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
SECTION 4
EMERGENCY
PROCEDURES
FAA APPROVED 4-67
30 May 2002
B. Baggage Door Seal Selector Valve .......................................................... EVAC SMOKE
(for airplanes SN 1000 thru 1155 with ASC 157 and airplanes SN 1156 and
subsequent).
NOTE: As cabin altitude increases, cabin rate of climb can be controlled by increasing
available bleed pressure above 35 psi. Bleed pressure can be increased by
　
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