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GIV-SP Aircraft Classification Number (ACN) GIV-GER-481
Aircraft Classification Number (ACN) is a number expressing the
relative effect of an aircraft on a pavement for a specified subgrade
category. ACN values are calculated for both flexible and rigid
pavement. If the aircraft gross weight and runway subgrade strength
are known, the ACN value can be determined from the charts on the
following pages.
Pavement Classification Number (PCN) is a number expressing the
bearing strength of a pavement for unrestricted operations. It is
reported in the Jeppesen charts in a format such as 24/F/C/Y/T,
where:
24 is the PCN
F is the type of pavement, where:
R = Rigid
F = Flexible
C is the subgrade strength, where:
D = Ultra Low
C = Low
B = Medium
A = High
Y is the tire pressure, where:
W = High, no pressure limit
X = Medium, limited to 217 psi
Y = Low, limited to 145 psi
Z = Very Low, limited to 73 psi
T is the PCN classification, where:
T = Technical Evaluation
U = Aircraft Experience
GIV-SP ACN values are:
Flexible Pavement Rigid Pavement
Subgrade D 21 24
Subgrade C 22 25
Subgrade B 23 26
Subgrade A 24 27
(Based on 75,000 lb gross weight and 189 psi tire pressure.)
ACN values must be less than or equal to the airport PCN for
unrestricted use. ACN input variables are gross weight, percent load
on main wheels, wheel spacing and maximum tire pressure.
Quick Reference Handbook
REVISION 8 GIV-SP PERFORMANCE
Oct 11/02 (GIV-SP AIRPLANES ONLY) Page PC - 9
GIV-SP ACN, ctd… GIV-GER-481
Example 1:
Given: Gross Weight = 70,000 lb, PCN = 24/F/C/Y/T
Where: PCN = 24
F = Flexible Pavement
ACN = 22 (from charts)
C = Low Subgrade Strength
Y = 145 psi Tire Pressure Limit
T = Technical Evaluation
Thus: ACN less than PCN, but tire pressure becomes a restriction.
Example 2:
Given: Gross Weight = 70,000 lb, PCN = 80/R/B/W/T
Where: PCN = 80
R = Rigid Pavement
ACN = 22 (from charts)
B = Medium Subgrade Strength
W = No Tire Pressure Limit
T = Technical Evaluation
Thus: ACN less than PCN, no tire pressure limit. Suitable runway.
Main Landing Gear Tire Pressure vs. Gross Weight:
1159SCL406-1 Tires
Quick Reference Handbook
GIV-SP PERFORMANCE REVISION 8
Page PC - 10 (GIV-SP AIRPLANES ONLY) Oct 11/02
GIV-SP ACN, ctd… GIV-GER-481
NOTE: Use of these charts is to be with reference to GIV Operating Manual
Chapter 6: Approach and Landing Characteristics and Procedures.
Quick Reference Handbook
REVISION 8 GIV-SP PERFORMANCE
Oct 11/02 (GIV-SP AIRPLANES ONLY) Page PC -11
GIV-SP ACN, ctd…. GIV-GER-481
NOTE: Use of these charts is to be with reference to GIV Operating Manual
Chapter 6: Approach and Landing Characteristics and Procedures.
Quick Reference Handbook
GIV-SP PERFORMANCE REVISION 8
Page PC - 12 (GIV-SP AIRPLANES ONLY) Oct 11/02
GIV-SP ACN, ctd…. GIV-GER-481
NOTE: Use of these charts is to be with reference to GIV Operating Manual
Chapter 6: Approach and Landing Characteristics and Procedures.
Quick Reference Handbook
REVISION 7 GIV-SP PERFORMANCE
May 30/02 (GIV-SP AIRPLANES ONLY) Page PC -13
GIV-SP ACN, ctd…. GIV-GER-481
NOTE: Use of these charts is to be with reference to GIV Operating Manual
Chapter 6: Approach and Landing Characteristics and Procedures.
Quick Reference Handbook
GIV-SP PERFORMANCE REVISION 7
Page PC - 14 (GIV-SP AIRPLANES ONLY) May 30/02
GIV-SP Brake Kinetic Energy / Carbon Brake Cooling
AFM APP. C
NOTE: Use of these charts is to be with reference to GIV Airplane Flight
Manual Appendix C: Brake Kinetic Energy and Carbon Brake Cooling.
Quick Reference Handbook
REVISION 7 NON-SP GIV PERFORMANCE
May 30/02 (NON-SP GIV AIRPLANES ONLY) Page P - i
Non-SP GIV Performance Planning Index
Non-SP GIV Takeoff Planning
Non-SP GIV Crosswind Components........................................... PA-1
Non-SP GIV Contaminated Runway Operations.......................... PA-2
Non-SP GIV Takeoff Planning Charts: Flaps 20°, APA SL .......... PA-5
Non-SP GIV Takeoff Planning Charts: Flaps 20°, 500 Feet......... PA-7
Non-SP GIV Takeoff Planning Charts: Flaps 20°, 1000 Feet....... PA-9
Non-SP GIV Takeoff Planning Charts: Flaps 20°, 2000 Feet..... PA-11
Non-SP GIV Takeoff Planning Charts: Flaps 20°, 4000 Feet..... PA-13
Non-SP GIV Takeoff Planning Charts: Flaps 20°, 6000 Feet..... PA-15
Non-SP GIV Takeoff Planning Charts: Flaps 20°, 8000 Feet..... PA-17
Non-SP GIV Takeoff Planning Charts: Flaps 10°, APA SL ........ PA-20
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