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Waypoints, Half Degree and More
PRESENTED BY:
Mitch Launius
Air Training International
Monday, 21 March 2015 | 3:30 p.m. – 4:45 p.m.
International Operators Conference | San Diego, CA | March 21 – 24, 2016
The following criteria apply when 5-alphanumeric name codes
are used
The 5-alphanumeric name code should consist of no more
than 3 numbers
The convention and the rules of application shall be published
in the State Aeronautical Information Publication (AIP)
3
State Specific Waypoints
Shanghai, Pudong
ZSPD
Shanghai, Pudong
ZSPD
PD007
4
State Specific Waypoints
Berlin
Schonefeld
EDDB
Berlin
Schonefeld
EDDB
DB446
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FAA Domestic Waypoints
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Continental Airspace Upper Altitude Structure
Resolution of 2 Degrees Longitude
and Half Degree Latitude
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NAT Flight Plan Waypoints have traditionally
been 1 Degree Latitude North/South
The distance between the Longitudes measured
east to west is also 60 minutes
The distance is 60NM only at the equator
1 Degree is 60 minutes and 60NM
OCEANIC WAYPOINTS
The following criteria apply when 5-alphanumeric name codes
are used
The 5-alphanumeric name code should consist of no more
than 3 numbers
ARINC 424 Code Convention
57N30
5730S 57S3057W30
5730E5730N
5730W
57E30
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1 Degree is 60 minutes and 60NMARINC 424 Code 5450N
N54º 00.0’ W050º 00.0’
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• N540º0.0’ W050º00.0’ FMS 13 Character Version
FMS uses tenths of a minute, not seconds
• 5450N ARINC 424 NAT Whole Degree Waypoint
• 54N050W ICAO Radio Phraseology
• 54/50 Track Message Whole Degree
N54ºDegrees
Latitude
0-90
W050ºDegrees
Longitude
0-180
00’0-60
Minutes
00’0-60
Minutes
00”0-60
Seconds
00”0-60
Seconds
N54º00.0’ W050º00.0’
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Reduced Lateral Separation Minimums (RLatSM) is a
trial program utilized in Gander and Shanwick oceanic
control areas
25NM lateral separation may be applied between
three designated core tracks FL350-FL390 (inclusive)
14
• N54º30.0’ W050º00.0’ 1/2 Degree Representation
• N5450 ARINC 424 waypoint created in 2014
• H5450 New Floating Waypoint for 1/2 Degree
H Represents ”Half” not an ARINC Code
• 5430/50 Track Message NAT 1/2 Degree Waypoint
RLatSM Half-Degree Waypoints
N54º30.0’ W050º00.0’
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ARINC 424 Code 5450N
N54º 00.0’ W050º 00.0’
Half Degree Code H5450
N54º 30.0’ W050º 00.0’
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N5020
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True or False, is the abbreviated code
H5050, an ARINC 424 code?
Question?
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False
The abbreviated code H5050 is a floating
waypoint only used in the North Atlantic
and is not an ARINC 424 code.
Answer:
Make your point the right one!PRESENTED BY:
Mitch Launius
Air Training International
