ADD/DELETE/CHANGE TRIP DATA               RELEASE 3.10              PAGE 1 OF 7

The purpose of this screen is to define trips by selecting waypoints from the
navaid file and displaying them on the screen in the proper order for each
trip.  For each trip, you will see the departure and arrival waypoints and
course and distance for each leg.  Data can be stored for a number of trips,
and you can view each trip individually.  In order to prepare a flight plan, a
trip must first be made "active" by displaying the particular trip to be
flown on the screen, using the PgUp and PgDn keys.

As you add (or delete) waypoints, the machine will automatically compute course
and distance for each leg.  It does this using latitude and longitude informa-
tion from the navaid file.  For most accurate results, keep trip legs fairly
short.  Especially near far north or south latitudes, avoid trip legs of more
than 100 or 200 miles.  The program computes rhumb-line courses.  (A rhumb-line
course is one which intersects all longitude lines at the same angle).  A great
circle route can be approximated by using several trip legs.

Waypoints are added by entering their corresponding names or identifiers from
the keyboard.  If you can't remember the exact spelling for a name, just type
the first couple of letters and the program will try to find it.  This process
is described in more detail later in these screen pages.

ADD/DELETE/CHANGE TRIP DATA                                         PAGE 2 OF 7

If the trip display screen is blank, the computer should automatically start
asking you to enter the name of the departure point.  (If not, press the A key
first, to ADD a waypoint).

On the left side of the screen you will see a solid video block which will
appear over waypoint names.  If there are any names on the screen, you will be
able to move the selector block up and down by using the up- and down-arrow
keys near the right side of your keyboard.  The location of the selector block
determines where the next waypoint can be added or deleted.  Thus you can add
waypoints in any order.  To permit the addition of a waypoint to the end of the
trip, the selector block can be moved one line below the last waypoint.

Note the trip counter in the lower right corner of the screen.  If this counter
says "Trip 4 of 15" that means trip #4 is active (displayed on the screen), and
the maximum number of available trip "slots" is 15.  The first number does NOT
necessarily represent how many trips you have entered.  When you delete a trip,
that trip number is left unused (its "slot" is empty); the "slot" numbers of
all the other trips remain the same.  Thus, the trip file can have empty trip
slots interspersed with filled ones.  The name in reverse video near the lower
right corner is the trip file name.

ADD/DELETE/CHANGE TRIP DATA                                         PAGE 3 OF 7

To find a particular trip, use the PgUp and PgDn keys to go to the previous or
next trip numbers, respectively.  Only trip slots that contain at least one
waypoint can be viewed.  To start a NEW trip, press the B (BEGIN) key; this
will take you to an empty slot if there is one available (see below).

In summary, the up- and down-arrow keys select a waypoint WITHIN the active
trip, while the PgUp and PgDn keys select different TRIPS within the trip file.
Each time a trip is displayed, all of the courses and distances are re-computed
automatically, thus insuring that the most current navaid data is always used.

Following is a description of each of the menu functions:

B = BEGIN a new trip.  The program will find an unused trip number and clear
    the screen for a new trip.  It will then ask you to enter the first way-
    point, which will become the departure point.  (See the ADD function, des-
    cribed on the next screen page).  If all of the available trip numbers are
    used, the previously active trip will remain active and a "File area is
    full" message will be displayed.  In this case, you will have to WIPE out
    (delete) an existing trip first (see screen page 5).


ADD/DELETE/CHANGE TRIP DATA                                         PAGE 4 OF 7

A = ADD a waypoint to the active trip, at the position indicated by the selec-
    tor block. The program will ask you to enter a waypoint name or identifier.
    If your entry is preceded by a special character (such as @LAX), the pro-
    gram will look for an identifier.  Otherwise, just enter the first 2 or 3
    letters of an already-existing name and the program will try to find it.
    If it isn't found, you can manually view the next entries one at a time,
    in alphabetical order, until the required navaid entry is found.

    At any time, you can press N to go to the navaid screen to add a new nav-
    aid; you won't lose any of your trip data.  When you come back, the program
    will display the same trip you had been working on.

    When you ADD a waypoint, any waypoints at and below the selector block are
    moved down one line.  Thus, a new waypoint goes BEFORE the one that was
    previously selected.  All courses and distances are automatically re-compu-
    ted as required. The ADD function can be cancelled by pressing the Esc key.

    No more than 16 trip legs are permitted; thus, up to 17 waypoints can be
    displayed on the screen including the departure point. If there are already
    16 legs in the active trip, you can't ADD another one.

ADD/DELETE/CHANGE TRIP DATA                                         PAGE 5 OF 7

D = DELETE the selected waypoint from the active trip.  All names (if any) be-
    low the selector block are moved up one line, and courses and distances are
    re-computed as necessary.  If the trip is empty or if the selector block is
    not on an existing waypoint, the DELETE function won't work.

W = WIPE OUT (delete) the active trip.  This function erases all waypoints from
    from the active trip, thus making that "slot" empty and rendering that trip
    number unused and potentially available for BEGINning a new trip.  No other
    trips or trip numbers are affected.  The next existing trip will become
    active; if all the next trip numbers are unused, the previous existing trip
    will become active.  If the whole trip file is empty, you will be prompted
    to start entering waypoints for a new trip.

    Both of the above functions ask for confirmation in case you pressed the
    wrong key by mistake.  Press Esc or N to cancel.

    Note again, D deletes a single WAYPOINT; W wipes out a whole trip!




ADD/DELETE/CHANGE TRIP DATA                                         PAGE 6 OF 7

N = NAVAID list.  This function will take you directly to the navigation aid
    screen, so you can add, delete or change navigation aids.  Any changes that
    were made to the trip file will automatically be saved on disk.  When you
    return from the navaid screen, the trip that was previously active will
    become active again.

F = FLIGHT plan.  This function starts the flight plan process, for the active
    trip.  The active trip must have at least 2 waypoints (1 leg).  The flight
    planning process can take place ONLY for the active trip, which must be
    displayed on the screen.  This insures that only the most current data from
    the navaid file will be used for flight planning, and gives you an oppor-
    tunity to review that data first.

    This function creates file FLITELOG.NAV, thus over-writing the previously
    created version of this file and completely replacing it.  FLITELOG.NAV
    is subsequently read by the flight plan program FPLANNR3.EXE.  Note this
    file must be on your DATA diskette or in your DATA subdirectory.




ADD/DELETE/CHANGE TRIP DATA                                         PAGE 7 OF 7

X = EXIT to the Master Menu.  You must Exit first, before you can change to a
    different trip file.

    Note: Invoking the NAVAID, FLIGHT plan, or EXIT functions will auto-
    matically cause the active trip file to be updated.  There is no separate
    "save" function for this purpose.  When a trip file is updated, it is over-
    written on the disk.  Therefore, it is important to keep backups, because
    if the update fails due to a power failure or a disk error, the trip file
    may not be useable.

H = HELP.  Displays the explanatory information you are reading now.
