Add Mode
Field | Description |
ALC | Enter the appropriate airline code. |
ETP SCENARIO NUMBER | Enter the desired scenario number (1 - 999). |
DESC | Enter a brief description of the ETP scenario for the flight plan printout, e.g. 1EO Depress, etc. |
NUMBER OF ENGINES | Enter the number of engines for the scenario, <ALL>, <-1>, or <50%>. This field defaults to <?> Search mode; use the up and down arrow keys to select the desired entry. Note: An entry of <50%> implies the loss of half of the normal complement of engines. Example: For a 3-engined aircraft this is equivalent to the loss of two engines. |
UNITS | Enter weight units of measure for all fixed burn entries, lbs <L> or kgs <K>. If this scenario is used for an aircraft calibrated in the alternative units, all fixed fuel burn values will be converted automatically. |
TLS/CFSS Check | Used to perform the ETOPS Beyond 180 Minute diversion time calculations, leveraging our current ETP functionality.
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MAIN / INITIAL DESCENT PROFILE | Indicate how the Initial Descent from cruising altitude is to be calculated. The options are: Driftdown <D>, Instantaneous <I>, Fixed <F> or Level Off <L>.
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ALTERNATIVE | If you select driftdown in the Initial Descent Profile field, you will be asked for an alternate method to be used in the case that driftdown performance data is unavailable for the aircraft in use. The options are: Instantaneous <I> or Fixed <F>. |
NORMAL PROFILE | Enter a driftdown profile name for normal conditions, if blank use STD. |
ICE PROFILE | Enter a driftdown profile name for icing conditions. This field allows icing penalties to be applied to the ETP calculation (driftdown performance) based on specific speeds and flight levels when icing conditions exist.
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Ice protection ON/OFF | N-FP needs to know when to use the icing profile. If the ETP stations are highlighted in blue, the ETP burn calculation includes penalties for airframe and engine anti-icing. Refer to the drift down performance table for the icing profile, to calculate the burn. |
INITIAL DESCENT PROFILE TIME/BURN/DISTANCE | If you have selected Fixed initial descent, then you will be required to provide values for Time (number of minutes), Burn (fixed burn value) and Distance (still-air, in NM) for the initial descent burn, otherwise these fields will be skipped. |
LEVEL-OFF | Enter the method to be used to determine level-off altitude:
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FL | If you select Fixed level-off in the previous field, you must specify the desired level-off altitude. The default entry is ACX (aircraft), which implies that the value will be read from the ETP F/L entry in the Aircraft Characteristics record. |
INCREMENT / MFL Incr Limit | Enter the level-off increment to be used.
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CRUISE PROFILE | Enter whether the cruise level is fixed <F> or climb permitted <C>. |
ADDN CRUISE PROFILING | Enter multiple level off altitudes along with a time constraint at each altitude. |
MFL | If climb is permitted in the cruise, indicate the maximum flight level to be permitted. The default entry is ACX (aircraft), which implies that the value will be read from the MFL entry in the Aircraft Characteristics record. |
SPEED | Enter the cruise speed profile or PLN for the same as the main route.
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FINAL DESCENT | Enter either <C> for Calculated or <F> for Fixed as the method for determining final descent burn. NOTE: For the descent from 10,000ft to Landing, The final descent calculation in an ETP scenario utilizes the main route's profile key, not the profile key specified for ETP Cruise in the ETP Scenario. For flights using a Cost Index profile for the main route, single engine performance does not exist; when N-Flight Planning executes the final descent burn based on 1 Engine, but is provided a Cost Index Profile Key which does not contain single engine performance, the software performs a more conservative 2 Engine Cost Index calculation of the fuel requirement. |
FINAL DESCENT TIME/BURN/DISTANCE | If you have selected Fixed final descent, then you will be required to provide values for Time (number of minutes), Burn (fixed burn value) and Distance (still-air, in NM) for the final descent burn, otherwise these fields will be skipped.
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HOLD TIME | Enter the hold time in minutes (1 - 99). |
HOLD METHOD | Enter the method for determining hold fuel burn; <C> for Calculate (using Hold performance data tables), <T> for Top of descent (using the fuel flow at top of descent), or <F> for Fixed (use values defined in next field). Note: If there is no TOD fuel flow (e.g. in the case where driftdown distance is greater than distance from ETP to ETP alternate), the flow is the cruise burn rate at 225 knots using the driftdown altitude/weight/ISA. |
FL | Enter the flight level to be used for hold calculations. The range is FL010 to FL250. |
HOLD BURN | If you selected Fixed hold burn, enter the desired amount in this field. |
APU BURN / Method | Enter method for determining APU burn. Options are:<C> for Calculate or <F> for Fixed. Optionally, this field may be left blank.
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APU TIME/BURN | If you chose Fixed for APU burn, enter the desired values for Time and Burn here. Note: The Time entry has no impact on fuel calculations. It is available only to permit a time figure to be printed on the flight plan, if desired. |
MISSED APPROACH TIME/BURN/DISTANCE | This field is optional. If desired, enter the Time, Burn, and Distance in the appropriate fields. Note: The Time entry has no impact on fuel calculations. It is available only to permit a time figure to be printed on the flight plan, if desired. |
PENALTIES APPLY TO | This section permits you to define additional fuel penalties to be applied to the ETP calculations, typically for ETOPS purposes. For each category there are three entry fields:
Example for Ice Reduction Coeff Percentage. |
EXTENDED RANGE ENTRY POINT RADIUS | Enter the distance to be used in determining the point along the route where the aircraft will enter the zone of Extended Range operations. |
REMARKS | Enter any remarks associated with this particular scenario. |
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.