Note: The following descriptions represent the typical access and privileges afforded to users designated as Dispatch Managers/Supervisors. Users with dispatcher privileges will have limited access to a subset of the screens presented.
This program will permit you to determine the maximum amount of payload and/or maximum amount of fuel that can be tankered over any given route without the need to calculate several flight plans, record the various answers, and calculate the net savings. This program runs the necessary number of flight plans in background, and generates a table of the results for you.
The modes available are:
Flight Num/Day: If the flight exists in the Flight Status file, then you may enter the flight number and flight day in these fields, otherwise they may be left blank.
City Pair: Enter either the ICAO or IATA codes for Origin and Destination. If you have previously entered a Flight number and Day, then you need only enter the Origin. This will cause the Flight Status file to be read, and all of the available pertinent data will be filled in (i.e., Destination, Aircraft ID. Weight units, default cruise profile, and maximum landing and takeoff weights.)
Alternate: Enter the alternate airport you wish to have used for flight plan calculations. The functionality of this field is much the same as in the Flight Plan i.e., you may enter any airport that is on the alternates file for the destination, use the <?> Search function to scroll through the options in order of priority. Simply pressing <Enter> will default to the first alternate on file.
Domestic/International: Enter either <D> or <I> to indicate whether this flight is domestic or international. This will affect whether domestic or bonded fuel prices are used in the calculation of fuel tankerage savings.
Route/Analysis/MTTA: This field allows you to select the route you wish to use in the calculations. If the flight resides in the Flight Status file and an analysis has been run, then you may select a route either by using the analysis number or city-pair route number (prefixed with <R>). If no analysis has been run, then you may specify the city-pair route number without entering the prefix. In either case you may alternatively enter MTTA to have a Minimum Time Track Airways generated.
Flight Level Restriction: If you wish to limit (cap) the maximum flight level you may enter the upper limit in this field. As in the flight plan, leaving the field blank implies that there will be no restriction on flight level.
Component: If you wish to fix the wind component to be used in the flight plan calculations, enter a value in this field. The limits are 100 to -100 knots. If this field is left blank, then the current wind/temperature files appropriate for ETD will be used.
Temperature Deviation: You will only be permitted access to this field if you have selected a fixed wind component in the previous field.
Aircraft ID: Enter the aircraft Identification number for the aircraft you want to use (if this has not already been drawn in from the Flight Status file). The corresponding Type and Series identifiers will be shown in the two adjacent fields, which are display only.
Weight Units: This field is display only, and will show the units of weight in which the selected aircraft is calibrated.
Cruise Profile: This field will initially show the default cruise mode from the Aircraft Characteristics file. It may be changed to any profile for which data is available.
Planned Payload: Enter the payload assigned for this flight, if known, or any other payload of your choosing. Since a MAX payload flight plan will be run in all cases, it is almost redundant to enter MAX in this field, although this is a permissible entry.
Planned Landing Fuel: This field will default to the minimum landing fuel value from the A/C Characteristics file. It may be edited, but only to a larger value.
Next Leg Fuel: Enter the amount of fuel that is estimated to be required for the next leg of the flight. The program will calculate the maximum payload that can be carried if this amount of fuel is tankered, as well as determining the savings from carrying this extra fuel with the planned payload.
Maximum Landing Weight: This field will display the Maximum Tankerage Landing weight, but may be edited up to the Maximum Structural Landing Weight (which will be displayed on the Command Line).
Maximum Takeoff Weight: This field will display the Maximum Takeoff Weight from the Aircraft Characteristics file. It may be edited to a lower value in case the Take-off weight is temperature or pressure altitude limited.
Once the last field has been entered, a confirmation prompt will appear on the Command Line. Enter <N> if you wish to edit any of your inputs, or <Q> to quit. A <Y> response will initiate the flight plan calculations.
If there are no fuel prices on file for either the Origin or Destination, a No Fuel Prices Available for XXXX. Do You Want to Continue (Y/N)? prompt will be displayed. If you continue, then the route will be verified (or built if necessary), the required number of flight plans will be run in background, and the results will then be displayed on screen. Since fuel prices are missing, the Savings column will display zero.
The output report displays key information such as Alternate, route distance, Estimated Time Enroute, and ETD, along with maximum payload and maximum tankerage estimates with enroute fuel burns, estimated take-off and landing weights, and estimated tankerage savings (or losses if applicable).
To exit from the report screen, press <Enter>. This will return you to the initial input screen with the previous input data retained for edit so that you can explore other cruise/payload/tankerage combinations using the same route if you wish.
Hardcopy mode functions in the same manner as Screen mode, with the exception that the report is sent to the printer.
Entering <Q> from the Command Line will return the Next PROGRAM-NUMBER prompt so that you have the option of going directly to your next program if you know the menu number, or of returning to the previous menu if you simply press <Enter>.