Mission/Flight Planning System

EFB-to-MSN and viceversa flightplan synchronization is currently not working correctly on the C-17. This issue will be addressed soon. In the meantime, flightplans must be completely entered through the aircraft's MSN System.

Please note that the publicly known performance figures for the C17 Globemaster are limited since the aircraft is in active military service. This system may not match perfectly the displays found in the real aircraft.

The performance section on this MSN system is unavailable on the initial version due to a lack of public performance figures.

The MSN (Mission) System, also known as Mission Computer Display/Keyboard system.

This system enables aircrew or operators to input and manage critical mission parameters, providing an interface for real-time updates and control over navigation and operational tasks. The system mainly functions as Flight Plan Input and Modification device, from where the crew can input the flight route, waypoints, target locations, and other critical navigation data, as well as modify them in real-time based on mission needs. Other functions on the real counterpart include stationkeeping and aircraft performance calculations.

The C17 features a unique setup, consisting of four displays and two keyboards - two displays and one keyboard located on the Captain side, and two displays+keyboard on the first officer side. This setup provides the crew more flexibility and efficiency when performing actions while in flight.

MSN/Mission Computer Display System

1. Forward Mission Computer Display, with 12 softkey pushbuttons, 6 on each side.

2. Aft Mission Computer Display, with 12 softkey pushbuttons, 6 on each side.

3. Brightness Knob (x2)

4. STS Button: INOP

5. Messages Button (MSG): Display Messages Page. Each screen has an individual MSG Button, and as such it allows for control of each display individually.

6. Mission Computer Keyboard, row 1: Each screen has an individual copy of these buttons, which allows for control of each display individually. From left to right:

   1. Communications (COMM): Displays the Frequency Search/Communications Page

   2. Mission (MSN): The Mission Page (also known as Route Legs) will display all the waypoints, navaids, and fixes comprising the flightplan. This page is used to evaluate and modify the planned route of flight during the climb and to add or delete waypoint.

   3. Stationkeeping (SKE): INOP

   4. Arrow Up: Moves up through the list/page

   5. Arrow Down: Moves down through the list/page

   6. Index (IDX): Displays index menu linking to all the different pages.

7. Mission Computer Keyboard, row 2: From left to right:

   1. Forward/Aft (FWD AFT): Switches active display between Forward/Aft

   2. Direct To (D->): Displays the Direct To / Nearest Airports Page. Direct To menu can also be used to tell the aircraft to fly directly to the next waypoint on the flight plan when engaging LNAV, in the case the aircraft has flown past the first waypoint.

   3. Progress (PROG): Displays the Progress Page

   4. Flight Plan (FLT PLN): Displays the Active Flightplan Page

   5. Performance (PRFM): INOP

   6. Execute (EXEC): Execute Button

8. Mission Computer Keyboard, row 3:

   1. Empty Button

   2. Empty Button

   3. Departure/Arrivals (DEP ARR): Display Departure/Arrivals Page

   4. Secondary Flight Plan (SEC PLN): INOP

   5. Takeoff and Landing Distance (TOLD): INOP

   6. Position Fix (POX FIX): Display Fix Information/Create Reference Points to display on ND

9. Mission Computer Keyboard: The keyboard will type on the active display only. To switch active displays, press the FWD AFT button.

Mission Computer Display Design Logic

Mission Computer Display Design

The system’s design logic uses pages with options either highlighted in green or unhighlighted. Green-highlighted options indicate features that are not simulated or unavailable, while unhighlighted options are clickable and interactive. This closely resembles the real counterpart.

Creating a new Flight Plan

1. Aircraft must have a source of power (Battery, APU, Generators or Ground Power) switched on.

2. Turn on the MSN Displays by using the rotary switch in the upper right corner.

3. Verify which screen is active. This can be easily done by typing with the keyboard - the active display text on the latest row. You may switch active displays by pressing FWD AFT.

4. Press FLT PLN. Insert departure and arrival airports.

5. Press DEP ARR. Insert the departure runways and SIDs, as well as arrival runway, approach and STARS. Press Execute to validate the departure/arrival procedures.

6. Press MSN to review flightplan. Delete any discontinuities or add any route waypoints. Press Execute to validate the flightplan.

7. The aircraft will follow the flight plan by selecting LNAV Mode on the Autopilot panel. VNAV mode will soon be integrated as well.