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FOMS Menu 215 (Aircraft Types Program)

This program acts as a control file for the types of aircraft that are on your system, and contains information that is applicable to each particular type/series/engine combination such as ATC (ICAO) Identifier, passenger capacity, etc. No performance data can be loaded for a given type/series/engine combination unless and until that combination has been added to this program's data file.

The available modes are:

  • Edit

  • Video

  • Screen

  • Hardcopy

  • Quit

Edit Mode



Aircraft Type/Series/Engines

Enter the appropriate designations for the aircraft, its particular series, and the designation for the type of engines used.

System Series #

This is a display only field, and will be filled by the new number assigned to the new type/series/engines combination by the system.

Jet or Prop

Enter <J> or <P> to signify whether this aircraft is pure jet (turbojet or turbofan) or propeller (piston or turboprop). This information is used to determine whether or not the cruise performance is entered as TAS or Mach number.

Number of Engines

Enter the normal complement of engines installed on this aircraft. This value acts as a control value for the performance data files, preventing the addition of profiles for more engines than the aircraft has.


Enter the standard ICAO approved ATC designator for this aircraft type/series. This will appear in all ICAO flight plans generated for this type of aircraft, so be sure you have it right. This information is also passed to the Aircraft Characteristics file.

IATA Ident

Enter the IATA identifier for the aircraft.

Passenger Capacity

Enter the maximum number of passengers that can be carried on this aircraft. This value is used as an error trap for entries in the Aircraft Characteristics file.

Weight Class (ICAO/USA)

Enter the classification designators according to ICAO rules and US (FAA) regulations.

Analysis Flight Level

In the first field, enter the minimum flight level at which an analysis should be run (e.g. for an empty aircraft on a cold day). In the second field enter the normal flight level at which route analyses should be run (e.g. the average cruising level of a fully loaded aircraft on a stage length typical for your operation.) In the third field enter the maximum altitude that should be used for route analysis (e.g., for a fully loaded aircraft on a hot day over a short stage length.) Note that the program will insist that the three entries be in descending order. At present only the middle field is actually used by the analysis program, but the other options may be used in planned enhancements to the system.

Short Route MTTA

In the first field, enter the distance to do a short-distance MTTA. In the second field, enter the altitude in 1000's of feet to do a short-distance MTTA. In the third field, enter the maximum flight level in 1000's of feet to do a short-distance MTTA.

Default Mach Number

Enter the default Mach for the aircraft in hundredths. This value will be used as the speed of the aircraft when processing route analyses, expanding MTTAs, etc.

Cutoff Tolerance

When the flight plan is computing, it checks to see whether the estimated takeoff weight is within a cutoff tolerance of the weight found in the previous iteration. If this field is left blank, the program will use a default value of 300 lbs. While this value is appropriate for heavy aircraft, a smaller value should be used for lighter aircraft.

Operation Cost

Enter the hourly operating cost of the aircraft. This value is used to compute operational costs not associated with fuel (this is an optional entry).

Able to Dump Fuel

Indicate whether this aircraft type is capable of dumping fuel, yes <Y> or no <N>. This flag has an impact on how ETP fuel is computed.

Approach Category

ICAO Classifications Category A to E. This field is not mandatory.


Add any comments relevant to the aircraft type, e.g. Aircraft Performance Database code.

Delete Mode

This mode does not exist due to the possible negative consequences of deleting this control record. Such records can only be removed at system level, and this action is not recommended.

Video Mode

This mode allows you to view a selected record, and then view adjacent records in the file by using the up and down arrow keys. This can be particularly useful if, for instance, you wish to view all of the B727s on file. You need only enter the aircraft type as B727, and series and engines as 0. The program will respond with a Record Not Found - Press ENTER for NEXT AVAILABLE prompt, so that as soon as you press <Enter> you will see the first B727 on file, and then be able to use the down arrow key to scroll through the file alphabetically.

Pressing <Enter>  again clears the screen and positions the cursor in the aircraft Type field for a fresh entry.

Screen Mode

This mode permits you to create a screen report for a range of types. When this mode is selected from the Command Line, the screen will change to the Report Selector version, allowing you to enter the range of aircraft types that you wish to see reported.

Hardcopy Mode

Hardcopy mode functions in the same manner as Screen mode, with the exception that the report is sent to the printer, so you do not have the ability to terminate the report in mid-stream.

Quit Mode

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>.

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.

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