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by bearing and distance.
USE ONLY the conventions in (1) to (5) below and SEPARATE each sub-item by a SPACE.
(1) ATS Route (2 to 7 characters)
The coded designator assigned to the route or route segment (e.g. BCN1, B1, R14, UB10,
KODAP2A)
(2) Significant Point (2 to 11 characters)
The coded designator (2 to 5 characters) assigned to the point (e.g. LN, MAY, HADDY)
OR
If no coded designator has been assigned, one of the following ways:
Degrees only (7 characters)
Two figures describing latitude in degrees followed by “N” (North) or “S” (South), followed by
three figures describing longitude in degrees followed by “E” (East) or “W” (West). Where
necessary make up the correct number of figures by insertion of zeros (e.g. 46N050W).
Degrees and minutes (11 characters)
Four figures describing latitude in degrees and tens and units of minutes followed by “N” (North) or
“S” (South), followed by five figures describing longitude in degrees and tens and units of minutes
followed by “E” (East) or “W” (West). Where necessary make up the correct number of figures by
insertion of zeros (e.g. 4620N05005W).
Common Error:
It is often observed that a mixture of the above is used e.g- 46N05461W, 5455N030W. This is not an
acceptable format.
Bearing and distance from a navigation aid (9 characters)
The identification of the navigation aid (normally a VOR) in the form of two or three characters,
followed by the bearing from the aid in the form of three figures giving degrees magnetic, followed
by the distance from the aid in the form of three figures expressing nautical miles.
Where necessary make up the correct number of figures by insertion of zeros (e.g. a point on radial
180 at a distance of 40 NM from VOR “DUB” should be expressed as DUB180040).
Change of Speed or Level (maximum 21 characters)
The point at which a change of speed (5% TAS or 0.01 Mach or more) or a change of level is
planned, expressed exactly as in (2) above, followed by an oblique stroke and both the cruising speed
and the cruising level, WITHOUT A SPACE BETWEEN THEM, even when only one of those
quantities will be changed.
NORTH ATLANTIC MNPSA OPERATIONS MANUAL
NAT MNPS 100 Edition 2008
Examples
LN/N0284A045;
MAY/N0305F180;
HADDY/M084F330;
4620N05005W/M082F350.
Note:
“N” = knots; “M” = Mach; “F” = flight level; “A” = altitude in hundreds of feet. (for other
expressions of height see ICAO Doc 4444).
Cruise Climb (maximum 28 characters)
The letter C followed by an oblique stroke then the point at which cruise climb is planned to start,
expressed exactly as in (2) above, followed by an oblique stroke; then the speed to be maintained
during cruise climb followed by the two levels defining the layer to be occupied during cruise climb,
or the level at which cruise climb is planned followed by the letters “PLUS”, WITHOUT A SPACE
BETWEEN THEM.
Examples
C/48N050W/M082F290F350;
C/48N050W/M082F290PLUS;
3.10 Field 16: Destination Aerodrome and Total Estimated Elapsed Time, Alternate Aerodrome(s)
Destination Aerodrome and Time (8 characters)
Insert the ICAO four-letter location indicator of the destination aerodrome followed, WITHOUT A
SPACE, by the total estimated elapsed time,
OR
If no location indicator has been assigned, insert ZZZZ followed, WITHOUT A SPACE, by the total
estimated elapsed time, and specify in Item 18 the name of the aerodrome preceded by DEST/.
Notes:
a) Total Estimated Elapsed Time
i) For IFR flights this is the total estimated time from take-off until arriving over the
designated point from which it is intended that an Instrument Approach Procedure,
defined by reference to navigation aids, will commence, or, if no navigation aid is
associated with the destination aerodrome, until arriving over the destination
aerodrome itself.
ii) For VFR flights this is the total estimated time from take-off until arriving over the
destination aerodrome.
b) For a flight plan received from an aircraft in flight, total estimated elapsed time starts from the
first point of the route to which the flight plan applies.
Alternate Aerodrome(s) (4 characters)
Insert the ICAO four-letter location indicator(s) of not more than two alternate aerodromes,
SEPARATED BY A SPACE.
OR
If no location indicator has been assigned to an alternate aerodrome insert ZZZZ and specify in Item
18 the name of the aerodrome preceded by ALTN/.
NORTH ATLANTIC MNPSA OPERATIONS MANUAL
NAT MNPS 101 Edition 2008
Common Errors:
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