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SECTION 3: ABNORMAL PROCEDURES
No Change
SECTION 4: EMERGENCY PROCEDURES
ENGINE FAILURE DURING TAKEOFF ABOVE V1 SPEED
Add the following before Step 1:
NOTE: FLEX Takeoff Thrust will assure required takeoff climb gradient without adding thrust on the
operating engine. However, it is recommended that go-around thrust be applied smoothly to
the operating engine.
SECTION 5: SYSTEMS
No change.
SECTION 6: PERFORMANCE
TAKEOFF PLANNING CHARTS
The data presented provide EPR settings and V-speeds for varying conditions of takeoff weight, ambient
temperature, and airport pressure altitude. Cowl anti-icing is assumed to be ON anytime the ambient
temperature is below +10°C. The tables have been prepared taking into account all of the takeoff and
climb limitations affecting operations, exclusive of obstacle clearance considerations.
Complying with the procedures outlined in this Appendix will ensure that the following conditions are
met:
1. Maximum certified temperatures are not exceeded.
2. FAA takeoff field length requirements are not exceeded.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
FLEX EPR
SPECIAL PERFORMANCE
APPENDIX A
FAA APPROVED A-3
30 May 2002 GIV-SP
3. Maximum allowable takeoff weight permitted by takeoff climb requirements, maximum brake
energy and tire speed limits are not exceeded.
Interpolation for intermediate conditions of takeoff weight, ambient temperature, airport pressure
altitude, or field length is not recommended due to the non-linearity of the performance and the
possibility of error. To ensure conservatism in airplane performance for takeoff conditions which fall
between the given values, use the next HIGHER weight, HIGHER ambient temperature, HIGHER airport
pressure altitude and the next SHORTER field length.
NOTE: Field lengths computed from these charts will yield takeoff performance for Balanced Field
Length only. To compute field lengths for other than V1/VR, graphical AFM charts should be
used.
TAKEOFF PLANNING CHART USAGE
The procedure for using the Takeoff Planning Charts to plan either a full-thrust or FLEX-thrust takeoff is
presented below:
1. For the desired takeoff flap setting (10° or 20° flaps), select the table for the airport pressure
altitude.
2. Using the NOTES at the bottom of the selected table, determine the "adjusted field length"
considering the runway slope, wind component, and ground spoiler operating condition. This is
done by making appropriate additions or subtractions to the available field length. This adjusted
field length will be used when making a full-thrust (MIN EPR) takeoff or to determine the
assumed temperature (FLEX Takeoff Thrust) column in subsequent steps.
3. Select the column for the ambient temperature. If the ambient temperature is below +10°C, cowl
anti-icing may be selected ON during takeoff. (The information in the tables is based upon cowl
anti-icing being ON at ambient temperatures below +10°C and all anti-icing off at temperatures
at and above +10°C). The MIN EPR value in this column is the EPR setting for a full-thrust
takeoff.
4. Select the row for the airplane takeoff weight. Under this weight are located the final takeoff
climb speed (VFS; defined by single engine, flaps up), the enroute climb speed (VSE; defined by
single engine, flaps up) and the reference speed for landing distance (VREF; defined by twin
engine, 39° flaps). These speeds are independent of temperature and takeoff EPR. The
maximum allowable temperature shown (MAX TEMP) represents the highest allowable
temperature for compliance with the limits of takeoff climb, maximum brake energy, tire speed,
and maximum certified temperature limits.
5. For a full-thrust takeoff, the adjusted field length and takeoff V-speeds (V1, VR, and V2) are
found at the intersection of the ambient temperature column and the takeoff weight row.
6. For a reduced-thrust takeoff, locate the adjusted field length in the takeoff weight row. This
column is the assumed temperature column. The EPR setting for the reduced-thrust takeoff
(FLEX EPR) is shown beneath the assumed temperature at the top of the column.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
FLEX EPR
SPECIAL PERFORMANCE
APPENDIX A
A-4 FAA APPROVED
GIV-SP 30 May 2002
7. This Appendix does not include any obstacle clearance information. Check obstacle clearance
using the charts presented in the Airplane Flight Manual for the selected takeoff flap setting and
the assumed temperature. If obstacles are not cleared, decrease the assumed temperature by
columns until obstacle clearance has been obtained. New V-speeds and FLEX EPR must then be
　
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