25. Flight Plan¶
25.1. Upper Part¶
The top shows a label that contains departure, departure position (parking, runway or helipad), destination, flight plan distance, traveling time, used procedures (SID, STAR, approach and transitions) as well as flight plan type.
The label also displays error messages if, for example, the runway of a STAR differs from the runway of the following approach procedure.
Traveling time is only shown if a valid aircraft performance profile is loaded that has at least climb, cruise and descent speeds set.
The ARINC name of the approach procedure which is needed by some FMCs is shown in parentheses.
Besides the label there are two input fields on top of this dock window:
- Cruise altitude (ft): This value is saved with the flight plan and is also used to calculate an airway flight plan based on given altitude. This field is set automatically to the minimum altitude for a flight plan if a plan along Victor or Jet airways is calculated and altitude restrictions were found. See Calculate high Altitude and following chapters about flight plan calculation.
- Flight Plan Type (IFR or VFR): This is saved with the flight plan and is only relevant for FSX or Prepar3D.
25.2. Flight Plan Table¶
The table view allows the same operations as the search table view except sorting. See Header for more information.
All selected elements in the flight plan table view will be highlighted
on the map using a black/green circle. See
Highlights and User Features for more information. Use
Ctrl+Click to select two or more elements
The active flight plan leg is highlighted in magenta when Little Navmap is connected to a simulator, the user aircraft is airborne and user aircraft is closer than 50 nautical miles to the flight plan.
Procedure legs have dark blue color and legs of a missed approach have a dark red color.
Alternate airports are shown at the end of the list using gray text. Note that more than one alternate can be added to the flight plan. Legs to the alternate airports originate all from the destination.
25.2.1. Table Columns¶
Ident: ICAO ident of the navaid or airport. The ident can be suffixed as shown below:
-and a distance value: Shows waypoints in procedures that are relative to a fix.
(IAF): Initial fix of a procedure or transition.
(FAF): Final approach fix. Depending on procedure either the FAF or FACF are shown with a Maltese cross on the map and in the elevation profile.
(FACF): Final approach course fix.
(MAP): Missed approach point.
Region: Two letter region code of a navaid.
Name: Name of airport or radio navaid.
Missedplus the name of the procedure. Contains the text
Alternatefor alternate airports at the end of the list.
Airway or Procedure: Contains the airway name for en-route legs or procedure instruction.
- For airways:
10,000: Minimum altitude for airway segment.
0-20,000: Maximum airway altitude. Minimum does not apply.
10,000-20,000: Minimum and maximum airway altitude.
- For procedures: Altitude restriction or speed limit. A
/separates altitude and speed restriction. The following altitude restrictions exist for procedures:
- Number only: Fly at altitude or speed. Example:
A: Fly at or above altitude or speed. Example:
B: Fly at or below altitude or speed. Example:
- Range: Fly at or above altitude one and at or below
altitude two. Example:
A 8,000, B 10,000.
- Altitude and speed limit: Values separated by
A 8,000, B 10,000/B220.
- Speed limit only: A prefixed
/indicates no altitude but a speed restriction. Example:
- Number only: Fly at altitude or speed. Example:
- For airways:
Type: Type of a radio navaid. Shows
LOCfor ILS or localizer approaches on the last runway leg.
Freq.: Frequency or channel of a radio navaid. Also shows ILS or localizer frequency for corresponding approaches on the last runway leg.
Range: Range of a radio navaid if available.
Course °M:This is the start course of the great circle route connecting the two waypoints of the leg. Use this course at departure if you travel long distances without navaids. Be aware that you have to change you course constantly when traveling along a great circle line.
Direct °M:This is the constant course of the rhumb line connecting two waypoints of a leg. Depending on route and distance it can differ from the course of the great circle line. Use this course if you travel along airways or towards or from VOR or NDB stations. Opposed to the course shown by the flight simulator GPS unit this will give you the precise radial when approaching a VOR or NDB on a flight plan.
Direct °T:The same as the two fields above but using true course. Use this in areas with high magnetic variation.
Distance: Distance of the flight plan leg.
Remaining: Remaining distance to destination airport or procedure end point (usually the runway).
Leg Time: Flying time for this leg. Calculated based on the selected aircraft performance profile (see Aircraft Performance). This is a static value and not updated while flying. Empty if performance calculation failed.
ETA: Estimated time of arrival. This is a static value and not updated while flying. Calculated based on the selected aircraft performance profile. Empty if performance calculation failed.
Fuel Rem.: Fuel remaining at waypoint, once for volume and once for weight. This is a static value and not updated while flying. Calculated based on the selected aircraft performance profile. Empty if aircraft performance profile has no fuel consumption numbers set.
Remarks: Turn instructions, flyover or related navaid for procedure legs.
25.2.2. Column Selection¶
Select visible Columns from the flight plan table context
menu to customize the table. You can still move and resize columns in
the table. All changes are saved.
The changes can be undone by selecting
Reset View in the context menu.
25.2.3. Error Display¶
If a waypoint of a flight plan cannot be found in the database it will be displayed in red. This can happen if the used AIRAC cycles do no match. The same applies to airways. The position on the map is still correct.
Airways are also displayed in red if the minimum altitude, maximum altitude or one-way restrictions are violated.
Hover the mouse over a field in the table to see a tooltip giving more information about the error.
Note that flight plans are still usable in Little Navmap although saving and exporting to other formats is limited and can lead to unexpected results.
25.3. Magnetic Declination¶
Little Navmap uses the magnetic declination that is stored either with VOR stations or the actual environment declination. The latter one is calculated by the program using the world magnetic mode. (WMM) or loaded from the simulator scenery database.
Note that the magnetic declination of a VOR (also: calibration for VOR, VORDME and VORTAC) may differ from the actual declination in a simulator region as it does in reality. The calibration of a VOR might be very old while the real declination in the environment changed in the meantime due to the wandering of the magnetic poles. Therefore, magnetic course values might differ. This can result in strange course readings in flight plans.
Little Navmap uses the declination of a VOR to calculate the inbound and outbound magnetic course of a flight plan leg to and from this VOR. This allows the pilot to use the VOR radials for navigation. For all other legs the actual environment declination is used.
You can disable the use of VOR declination in the options dialog on page
Flight Plan by checking
Ignore declination of VOR and other radio navaids. This will use the
environment declination for all calculations. You might want to use this
if you fly entirely based on GPS and ignore VOR stations.
A flight plan crossing the
VORTAC Battle Ground (BTG) last calibrated 1975
(source) with a
declination of 21° East while the environment has an actual declination
of 15.2° East. You can see the actual declination below the mouse cursor
in the status bar of Little Navmap.
Below a flight plan with three legs all having a true course of 90°.
Ignore declination of VOR and other radio navaids not checked:
Ignore declination of VOR and other radio navaids checked:
See also Magnetic Declination for more information about declination values and scenery databases.
25.4. Mouse Clicks¶
A double-click on an entry in the table view shows either an airport
diagram or zooms to the navaid. Additionally, details are shown in the
Information dock window. A single click selects an object and
highlights it on the map using a black/green circle.