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FOMS Menu 170 - Page 3

The following will provide details for each parameter residing in the FOMS 170 database on Page 3. Details include descriptions, available options, defaults, and system behavior once the parameter change has been saved.



Field

Description

ALC

This field represents the carrier’s three-letter airline code. Generally only one airline code is maintained on each system, however there is support for multiple airline codes should the user have the requirement to manage more than one airline code.

Unit (LBS or KGS)

Options are L (LBS) or K (KGS). 

  • If set to L, passenger weights and fuel defaults are entered in LBS. 

  • If set to K, passenger weights and fuel defaults are entered in KGS. Weights entered here are the default weights displayed in NFP’s plan screen.

Dom Weight

Domestic Weight categorized by Adult, Male, Female, Child, Infant, Cabin Crew, Flight Crew, and Baggage.  Not all fields need to have data included. 

Int Weight

International Weight categorized by Adult, Male, Female, Child, Infant, Cabin Crew, Flight Crew, and Baggage.  Not all fields need to have data included. 

Allow Overbooked

Options are Y or N

  • If set to Y, NFP allows passenger counts greater than the default value in FOMS 220. 

  • If set to N, NFP does not allow passenger counts greater than the default value in FOMS 220 and will not allow a flight plan to be generated if over the default value. 

  • If blank, the same behavior as occurs.

Check Zero Pax

Options are Y (yes), N (no), and E (error when zero). 

  • If set to Y, NFP provides a warning on compute if the passenger count is zero. 

  • If set to N, NFP does not provide a warning. 

  • If set to E, NFP does not allow a successful compute until a passenger count is entered.

Crew Weight By Assign

Options are Y (yes), or N (no). 

  • If set to Y, the checkbox for Based on Assignment on the Plan screen is automatically checked. 

  • If set to N, you must manually select the checkbox.  Default when left blank is the same as N.


When enabled, crew members added to the crew list in NFP’s plan screen increase the BOW for the flight automatically based on the passenger weights set in FOMS 170. Removing crew from the list reduces the BOW accordingly.

Child Baggage

Include children’s baggage in weight calculations. Options are (Y)es, (N)o, Blank

  • If blank, the same behavior as N.

Infant Baggage

Include infant’s baggage in weight calculations. Options are (Y)es, (N)o, Blank

  • If blank, the same behavior as N.

Warn DCT Below Mora

Check for DCT cruise legs below MORA. 

Options are (Y)es, (N)o, and (E)rror.

  • Alt: Check for DCT cruise legs below MORA in the route to alternate. 

    • Options are (Y)es, (N)o, and (E)rror.

Mora Dft Dwn

This parameter consists of four fields:

First field options are O (off), W (weight reduction), E (Escape Routes), and A (auto). 

  • If set to O, NFP does not provide any Escape Routes. 

  • If set to W, NFP penalizes aircraft weight to meet MORA requirements (Method 1). 

  • If set to E, NFP generates Escape Routes (O2 or driftdown – Method 2) if MORA value is higher than 10,000 feet along the route of flight. 

  • If set to A, NFP generates Escape Routes and if unable to do so safely, reduces aircraft weight as per Method 1.


Second field options are Y (yes) or N (no). 

  • If set to Y, NFP checks MORA for all routes including alternates and reclear but not takeoff alternate. 

  • If set to N, NFP only checks MORA for the main route.


Third field options are Y (yes) or N (no). 

  • If set to Y, NFP aborts a compute if a MORA check fails. 

  • If set to N, NFP only provides a warning.


Fourth field options are 1 (one engine out), O (off), H (half engines). 

  • If set to 1, NFP generates drift down Escape Routes based on one engine out performance. 

  • If set to O, NFP does not generate any drift down Escape Routes. 

  • If set to H, NFP generates drift down Escape Routes based on the number of engines divided by 2. For 3 engine aircraft, H = 2 engines out. 

  • If blank, the same behavior as occurs.

Mora Dft Dwn Rule

Options are Standard and FAA.

  • The Standard terrain clearance option ensures a terrain clearance of 1000ft when MORA is below 5000ft, and 2000ft when MORA is at or above 5000ft, whether using Weight Reduction or Escape Routes for driftdown.

  • The FAA terrain clearance option ensures terrain clearance of 1000ft for Weight Reduction and 2000ft for Escape Routes, regardless of MORA.

Talt Drfft Down

Options are Y (yes), N (no), and E (error). If set to Y, NFP provides MORA checking for the takeoff alternate route and warns if the route goes below MORA. If set to N, NFP does not provide this check. If set to E, NFP aborts a compute if the takeoff alternate route goes below MORA. Keep in mind that alternate routes are computed using 1EO performance.

Use Minium for Awy

Options are Y (yes) or N (no). 

  • If set to Y, NFP ensures that the Escape Routes generated for oxygen and drift down respect airway minimum flight levels as per FOMS 341. 

  • If set to N, NFP generates Escape Routes which respect MORA values instead of airway minimum flight levels. 

  • If blank, the same behavior as occurs

Star: Options available for route to use STAR. Options are Y (yes) or N (no). 

O2 Escape All Rtes

Options are Y (yes) or N (no). 

  • If set to Y, NFP verifies whether oxygen Escape Routes should be generated for all routes including alternate route(s), reclear route, and takeoff alternate route. 

  • If set to N, NFP does not verify whether Escape Routes are required. 

  • If blank, NFP only checks the main route (origin – destination).

DCT Escape Routes

Allow the system to use DCT legs when generating Escape Routes. 

Options are Y (yes), N (no), or blank

  • If blank, the same behavior as N.

Calc Esc Route Burn

Should the system calculate an Escape Route burn? 

This parameter consists of three fields:

First field, options are Y (yes) or N (no).

  • If Yes is selected, Hold Time required at the Escape Route airport must be added (in minutes). NFP provides a warning if a curfew is broken at origin or destination. Curfew times are stored in the FOMS 105 menu (Airports) or the FOMS 366 menu (Curfew times) databases. Curfew times entered in FOMS 366 override the ones in FOMS 105.


  • If N is entered, the system does not alert you if curfews times have not been met. All curfew times entered in FOMS 105 or FOMS 366 are in local time.


  • If blank, curfew times are not considered or warned against.

Second field, options are Y (yes) or N (no). This option allows NFP to increase CI cruise profile or slow it down when OPT CI is used to avoid breaking a curfew. 

  • If is selected, changes the OPT CI speed selection to meet the curfew times - a warning displays indicating that the best profile is being used so that the curfew is not violated. 

  • If is selected, does not change OPT CI; a warning displays on the computed flight to indicate that arrival time breaks the curfew of the destination airport. The last two fields allow users to enter a start and end buffer time around the curfew set in FOMS 336, a warning message displays to indicate that curfew has been violated; the curfew and buffer times are shown.

Third field indicates a meet schedule cost index interval, which looks at those intervals to determine OPT CI. If blank, the default is 50. 

Use Worst Case Alt

Options are (yes) or (no). 

  • If set to yes, route uses ISA -20 when converting Escape Route endurance pressure altitude to true altitude. 

Split Dist

This option partitions route legs by distance in NM to search for Escape Routes.

Ensure Coverage

This option requires Escape Route coverage for the entire route, otherwise report partial results. Options are Y (yes)/N (no).

Fwd Direction

This will provide Escape Routes within the forward direction. 

Options are:

  • Y (yes), 

  • N (no) which are reduced bias, and

  • X which is no bias. 

More information on this feature can be found in the 22-7 Enhancements article and/or on the Enroute Stations Tab in WebFoms.


Fuel Prices Section

Field

Description

Default Fuel Prices (optional)

This allows users to set default fuel prices that are considered when there are no prices entered in FOMS 130 for a station. Enter fuel prices for Domestic and International flights. When filled in, these costs are considered regardless of stations planned.


You must also decide the default currency and the unit of measure the fuel cost applies to (USG, UKG, LTR, KGS, LBS, or TON). These inputs reflect in the fuel costs shown on a per route basis.

Orig Use Multi Leg

Options are Y (yes) or N (no). 

  • If set to Y, NFP looks for a second leg with the same flight number and aircraft to confirm if it is a Domestic or International flight. Once known, NFP applies the appropriate fuel cost based on that leg.

  • If set to N, NFP does not look ahead at any flight legs other than the one being planned. 

  • If blank, default is N.

Advise Tankering

Value entered as a percentage (%). Percentage value entered is minimum savings and impacts NFP’s decision on whether tankering is beneficial or not. 

  • If auto tanker features are used (NextRamp or multi-leg), NFP does not auto-tanker if the total savings between tankering and not tankering is less than this percentage value. 

  • If blank, the default percentage is 10%.

Warn ArrFob </>Ramp

Entries for both fields are in LBS or KGS (fuel weight). These two entries impact NFP’s NextRamp tanker feature. 

If used, NFP generates a post compute warning if the arrival FOB at the first destination meets criteria set in these fields based on the RAMP fuel requirements for the second leg.

Default Fuel Density

Set the default fuel density for the entire ALC which is displayed in LBS or KGS for the weight and the density can be set to USG, UKG or LIT. 

Min Extra

Use these fields to add a minimum amount of extra fuel and specify what fuel types contribute if the sum of these values is lower than the minimum extra fuel, the difference is automatically added.

  • ID: Enter a unique identifier for the minimum fuel.

  • Fuel: Enter the minimum extra fuel required, if the sum of these values is lower than the amount of fuel, the difference is automatically added.

  • Sum of:  Select where to add the extra fuel. 

    • Options are: T-Tank, D-Add, H-Hold, A-Alt, C-Reserve, B-Ballast, N-Addn Hold, E-ETP, R-Reclear.

Additional Fuel

The value added in this field is automatically shown as additional fuel on all flight plans, regardless of the aircraft used.

Additional Fuel Amount

Set in LBS/KGS. It is the total amount for the category that was created in the previous field.

Optional

Enter whether the additional fuel is considered optional? 

Options are Y (yes) or N (no). 

Default

Enter whether the additional fuel is selected by default.

Options are Y (yes) or N (no). 

Reason 

Enter a default reason that appears in the Additional Fuel dropdown on the Plan screen. You can add up to 10 reasons but you cannot duplicate a reason. 


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