Determining Airport Acceptance Rate (AAR) · ROT MTY RWY 29 0 10 20 30 40 50 60 70 ency Histogram...
Transcript of Determining Airport Acceptance Rate (AAR) · ROT MTY RWY 29 0 10 20 30 40 50 60 70 ency Histogram...
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Determining Airport
Acceptance Rate (AAR)
Mexico City Airport Case Study
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3 330
4 954
6 939
7 677
9 744
11 516
1 017
1 772 THRESHOLD TO
SCALE
Airport layout
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Heavy
4%
Medium
96%
HeavyMediumMixIndex 3%
4396 MixIndex
108MixIndex
Aircraft mix
data taken from March 9 thru
March 24, 2006
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AC 150 5060 Airport Capacity &
Delays
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Arrival percentage
40 % 50% 60%
Exit Factor
E
Hourly
capacity
base
C*
Hourly
Capacity
C
Exit Factor
E
Hourly
capacity
base
C*
*
Hourly
Capacity
C
Exit Factor
E
Hourly
capacity
base
C*
Hourly
Capacity
C
VFR
0.87 92 80 0.87 76 66 0.87 65 56
Departures
48
Arrivals
32
Departures
33
Arrivals
33
Departures
23
Arrivals
33
IFR
0.98 73 71 0.98 59 57 0.98 49 48
Departures
43
Arrivals
28
Departures
29
Arrivals
28
Departures
20
Arrivals
28
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0
10
20
30
40
50
60
3 3.5 4 4.5 5 6 7 8 9 10
Aircra
ft p
er
hour
Nautical Miles between aircraft at the runway threshold
150
140
Ground speed at the runway
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Runway Occupancy Time
(ROT)
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0%
20%
40%
60%
80%
100%
120%
0
20
40
60
80
100
120
140
26
29
32
35
38
41
44
47
50
53
56
59
62
65
68
71
74
77
80
83
86
89
92
95
98
101
104
Fre
qu
en
cy
Time in seconds
Frecuencia
% acumulado
3 σ
μ =
56.1
9
μ = 56.19
σ = 9.526
μ +
3σ
= 8
4.7
7
Ocupacy time Histogram
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5427784
3600.
.ΑΑR
Statistical AAR
AAR =
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B757
A320
B737
MD
80
AT
42
DC
9
DC
8
A340
F1
00
E145
B767
A300
B727
B747
B777
MD
11
IL62
20
30
40
50
60
70
80
90
100
110
Tie
mp
o d
e O
cu
pació
n
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UP
S
MX
A
AM
X
LC
D
TA
O
SE
R
DH
L
IBE
GM
T
CH
P
CB
E
AA
L
SLI
CO
A
PM
O
GU
G
US
A
DA
L
AC
A
TN
O
CM
P
NW
A
UA
L
AW
E
JO
S
AS
A
LP
E
JA
L
CU
B
TA
I
MA
A
AF
R
KLM
DLH
VR
G
BT
A
LA
N
AV
A
BA
W
LLB
20
30
40
50
60
70
80
90
100
110
Occupancy T
ime
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RUNWAY
CONFIGURATION Condition MiT AAR
05
Optimal 4 40
IMC
Poor braking action
Windshear
5 36
Rwy 05R closed
Rwy 05L closed 8 28
23
Optimal 5 36
IMC
Poor Braking
Windshear
5 36
Rwy 23L closed 10 20
Rwy 23R closed 10 20
AAR México City Airport
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AAR Toluca
Runway
Configuration Condition MiT AAR
15 Optimal 9 24
33 Optimal 9 24
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ROT MTY RWY 29
0
10
20
30
40
50
60
70
Fre
qu
ency
Histogram Runway Occupancy Time for
Arrivals to
Rwy 29
Average= 59.81 seconds
ROT = 103 seconds
0
2
4
6
8
10
12
14
16
18
Fre
qu
ency
Histogram Runway Occupancy Time for
Departures from
Rwy 29
Average= 52.14 seconds
ROT = 84 seconds
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AAR Monterrey
Runway
Configuration Condition MiT AAR
29 Optimal 10 19
11 Optimal 11 18
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ROT GDL RWY 28
0
20
40
60
80
100
120
140
160
Fre
qu
ency
Histogram Runway Occupancy Time for
Departures from
Rwy 28
Average= 71.56 seconds
ROT= 92 seconds
0
20
40
60
80
100
120
140
160
180
200
Fre
qu
ency
Histogram Runway Occupancy Time for Arrivals to
Rwy 28
Average = 63.69 seconds
ROT= 94 seconds
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AAR Guadalajara
Runway
Configuration Condition MiT AAR
28 Optimal 10 19
10 Optimal 10 19
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2070 m (7690 ft) 2150 m (7052 ft)
Meteorological
Conditions
Capacity per
hour Departures/Arrivals
MiT Arrivals
VMC 44 22 22 9 MN
AAR San José del Cabo
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Thank you !
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Definitions
Airport Acceptance Rate (AAR):
A dynamic parameter specifying the number of arrival
aircraft that an airport, in conjunction with:
• terminal airspace
• ramp space
• parking space, and
• terminal facilities
Able to accept under specific conditions and during any
consecutive 60 minute period
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Definitions
Airport Primary Runway Configuration:
An airport configuration which handles 3 percent
or more of the annual operations
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Definitions
Potential AAR:
The theoretical acceptance rate at the runway
threshold – before taking other factors into
consideration
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Definitions
Actual AAR:
The Potential AAR at the runway threshold adjusted
for other factors
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Definitions
AAR adjustment factors:
The factors that must be considered when establishing
the actual AAR. These may include:
• Weather conditions
• Runway conditions
• Aircraft type and fleet mix on final
• Taxiway layout
• Ramp space
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For any runway configuration:
Potential AAR
– Adjustment Factors
Actual AAR
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Calculate the Actual AAR value for each airport
runway configuration for the following weather
conditions:
Visual Meteorological Conditions (VMC) - weather allows
vectoring for visual approaches
Marginal VMC - weather does not allow vectoring for visual
approaches, but visual separation on final is possible
Instrument Meteorological Conditions (IMC) - visual
approaches and visual separation on final are not possible
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Step 1
Calculate the Potential AAR
Determine:
• average ground speed crossing the runway
threshold, and
• the spacing interval required between successive
arrivals
Divide the ground speed by the spacing interval to
determine the Potential AAR
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Step 1
Calculate the Potential AAR – formula method
Formula: Ground speed in knots at the runway threshold
divided by spacing interval at the runway threshold in
nautical miles
NOTE: when the quotient is a fraction, round down to the next
whole number
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Step 1
Potential AAR – examples
Example 1: 130 KTS/ 5 NM = 26
Potential AAR = 26 arrivals per hour
Example 2: 120 KTS / 7 NM = 17.14
(round down to 17)
Potential AAR = 17 arrivals per hour
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Step 1
Calculate the Potential AAR – table method
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Thank you !