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ANGLES NECESSARY SINCE HYDRAULIC BOOST WILL BE LOST AS
ENGINE RPM DECAYS.
CAUTION: FOR AIRPLANES SN 1000 THRU 1249 WITHOUT ASC 304: THE DUTY
CYCLE TIME FOR CONTINUOUS (AIRSTART) IGNITION WITHOUT ASC
304 IS FIVE (5) MINUTES ON AND THIRTY (30) MINUTES OFF FOR
COOLING THERE IS NO LIMITATION ON THE IGNITION WHEN USED IN
A THIRTY (30) SECONDS ON, THIRTY (30) SECONDS OFF CYCLE.
FOR AIRPLANES SN 1250 AND SUBS AND SN 1000 THRU 1249 WITH
ASC 304: THERE IS NO DUTY CYCLE TIME LIMITATION FOR
CONTINUOUS (AIRSTART) IGNITION WITH ASC 304.
CAUTION: ENGINE DAMAGE MAY RESULT IF RPM IS NOT ALLOWED TO
STABILIZE AT IDLE BEFORE ADVANCING POWER LEVERS.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
ADVERSE WEATHER/ABNORMAL
ATMOSPHERIC CONDITIONS
APPENDIX E
FAA APPROVED E-57
13 September 2000 GIV-SP
If engine(s) DO NOT relight, continue descent to the Airstart envelope (Sea Level to 25,000 ft.
and 200 KCAS to 324 KCAS). Proceed to the nearest suitable landing site.
Refer to Dual Engine Flameout Procedure, EMERGENCY PROCEDURES, Section 4.
TURBULENCE PENETRATION/SEVERE GUST ENCOUNTER
Turbulence penetration procedures apply to flying at altitude, and should not be confused with
the low altitude wind shear precautions recommended for the traffic pattern and landing approach
phase of the mission.
If possible, flight through turbulence should be avoided. Flying the recommended speeds at
reduced altitudes produces greater buffet margins for the same intensity of turbulence.
Continued use of the autopilot will reduce pilot workload. However, use of the Flight Director
vertical modes is not advised in severe turbulence. The basic pitch attitude and heading hold
autopilot modes will reduce excessive control surface motion and attitude changes in severe
turbulence. Airplane pitch motions and ride qualities are aggravated when the Flight Director
vertical modes are engaged during these flight conditions.
ENGINES
When encountering SEVERE gust turbulence, rapid power adjustments should be avoided. The
Autothrottle should be OFF and Airstart Ignition ON. If both engines flameout, an immediate
relight is recommended.
As RPM is decreasing, perform the following procedures immediately:
1. Power Levers..................................................................................................................... IDLE
2. Airstart Ignition.................................................................................................................... ON
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
ADVERSE WEATHER/ABNORMAL
ATMOSPHERIC CONDITIONS
APPENDIX E
E-58 FAA APPROVED
GIV-SP 11 October 2002
3. Altitude/Airspeed............................... Descend at 270 KCAS/0.75 MT until out of turbulence,
then descend at VMO/MMO to 25,000 ft.
NOTE: Use of Speed brakes is not recommended. Use of the Standby Electrical System
(ABEX) Generator is not possible with a windmilling engine.
CAUTION: MANEUVERS SHOULD BE LIMITED TO MINIMUM BANK AND PITCH
ANGLES SINCE HYDRAULIC BOOST WILL BE LOST IF ENGINE RPM
DECAYS.
CAUTION: FOR AIRPLANES SN 1000 THRU 1249 WITHOUT ASC 304: THE DUTY
CYCLE TIME FOR CONTINUOUS (AIRSTART) IGNITION WITHOUT ASC
304 IS FIVE (5) MINUTES ON AND THIRTY (30) MINUTES OFF FOR
COOLING THERE IS NO LIMITATION ON THE IGNITION WHEN USED IN
A THIRTY (30) SECONDS ON, THIRTY (30) SECONDS OFF CYCLE.
FOR AIRPLANES SN 1250 AND SUBS AND SN 1000 THRU 1249 WITH
ASC 304: THERE IS NO DUTY CYCLE TIME LIMITATION FOR
CONTINUOUS (AIRSTART) IGNITION WITH ASC 304.
CAUTION: ENGINE DAMAGE MAY RESULT IF RPM IS NOT ALLOWED TO
STABILIZE AT IDLE BEFORE ADVANCING POWER LEVERS.
If engine(s) DO NOT relight, continue descent to the Airstart envelope (Sea Level to 25,000 ft.
and 200 KCAS to 324 KCAS). Proceed toward the nearest suitable landing site.
Refer to Dual Engine Flameout Procedure, EMERGENCY PROCEDURES, Section 4.
AIRSPEED
1. Recommended Turbulence Penetration Airspeed is 270 KCAS/0.75 MT, whichever is lower.
2. A minimum speed of 1.5 Vs is recommended to maintain adequate buffet margins.
3. Severe turbulence will cause large and often rapid variations in indicated airspeed.
DO NOT CHASE AIRSPEED.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
ADVERSE WEATHER/ABNORMAL
ATMOSPHERIC CONDITIONS
APPENDIX E
FAA APPROVED E-59
13 September 2000 GIV-SP
ATTITUDE
1. Maintain the desired pitch attitude and keep wings level.
2. Large and sudden control and power changes should be avoided.
PASSENGER WARNING
1. SEAT BELT......................................................................................................................... ON
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湾4飞机飞行手册AFM Gulfstream IV AIRPLANE FLIGHT MANUAL 2(78)
