The Alternate Routes tab is limited to certain user profiles - you might very well not see it in your detached view of the Flight Details.

It gives access to the following functionalities:

1. List of the Alternate Routes for a selected flight
2. The AO What If Reroute (AOWIR) possibilities including:
   1. The Reroute Preparation
   2. The Reroute Request Confirmation
   3. The Reroute Confirmation

The query for which Alternate Routes detached View is generated is reminded on top of the window:

• the aircraft identifier (ARCID),
• the ICAO code for the departure aerodrome (ADEP),
• the Initial Off Block Date (IOBD),
• the Initial Off Block Time (IOBT),
• and the ICAO code for the destination aerodrome (ADES).

Structure

Current Flight Details

• Estimated Take Off Time: Estimated Take Off Time.
• Calculated Take Off Time: Calculated Take Off Time.
• Shift + Delay (MIN): Calculated shift plus delay time in minutes - a case sensitive letter may possibly be appended to the delay value to indicate following specific delay characteristics:
  • D when the delay value calculated for the flight is exceeding the delay confirmation threshold of a regulation affecting the flight.
  • A when the delay value of the flight has been adjusted to the clock.
  Provisional delays (slot not yet published) are indicated by an asterisk on either side of the value including the possible delay characteristic letter (e.g. *12D*).
• Estimated Elapsed Time (MIN): Estimated elapsed time in minutes.
• Most Penalising Regulation: The reference of the most penalising regulation affecting the flight.
  If the flight is subject to regulations other than the one identified, the text  - Other regulations apply is appended.
• Aircraft Type: Type of aircraft.
• Initial Requested Flight Level: Requested flight level.
• Initial Requested Speed: Cruising speed.
• Route Length (NM): Length of flight path.

 Additional Route Creation

The Generate button allows you to dynamically generate alternate routes taking into account entries in Via Point, Via Airspace, Avoid Point and Avoid Airspace.

• Via Point: List of published points to be overflown. By default, this field is empty.
• Via Airspace : List of airspace that must be traversed (in 2D projection). By default, this field is empty.
• Avoid Point: List of published points to be avoided. By default, this field is empty.
• Avoid Airspace: List of airspace that must be avoided (in 2D projection). By default, this field is empty.

The Add button allows you to manually enter a route (via the Reroute Preparation page) to the present list of alternate routes.

Button Bar

Additional action butttons may be available to you, depending first on your profile, and on the query context:

• Reroute Prep: To modify the selected alternate route and/or associated network address before issuing a route evaluation (Try) or a route request (Apply or Apply/File).
  Only available for a flight which has its AO What If Reroute indicator code (W) set to T (Try is allowed) or A (Apply and Try allowed).
• Try: To perform a reroute flight plan evaluation including IFPS verification.
  Only available for a flight which has its AO What If Reroute indicator code (W) set to T (Try is allowed) or A (Apply and Try allowed).
• Apply: To request for an immediate booking of a slot in ETFMS without filing the new flight plan in IFPS.
  Only available for a flight which has its AO What If Reroute indicator code (W) set to A (Apply and Try allowed), and for which the Filing Rule (field 214 of the Flight General ICD message) is either O (Operator is obliged to refile) or F (filing can be done by AO or CFMU).
• Apply/File : To request for an immediate booking of a slot in ETFMS and an automatic filing of the new flight plan in IFPS.
  Only available for a flight which has its AO What If Reroute indicator code (W) set to A (Apply and Try allowed), and for which the Filing Rule (field 214 of the Flight General ICD message) is F (filing can be done by AO or CFMU).
  

List of Alternate Routes

By default, the alternate routes list only displays alternative Standard routes (the CFMU system initially returns all potential alternative Standard routes).

The list of Alternate Routes features three sections:

Filters

• MAX Shift + Delay: Initially displays the greatest MAX Shift Delay value accepted by ETFMS. Following a reroute evaluation, it displays the last MAX Shift + Delay value queried.
• Generated: Check box to include/remove the generated (via the Generate button) alternate routes in the alternate routes list. By default, the check box is unchecked.
• Manual: Check box to include/remove the manually added alternate routes in the alternate routes list. By default, the check box is unchecked.
• Standard: Check box to include/remove the standard alternate routes in the alternate routes list. By default, the check box is checked.

Result Summary

The time and number of matches found.

Routes List

Prior to a reroute evaluation, for each alternate route, the alternate routes list displays the following elements:

• radio button: To indicate selection of the alternate route.
• Route ID: This is composed of:
  1. the route origin (aerodrome or point),
  2. the route destination (aerodrome or point), and
  3. the route sequence number. The sequence number shall be preceded by:
     G for Generated routes (e.g. “EGKK LFPG G01”), and
     U for manually entered routes (e.g. “EGKK LFPG U01”).
• Alternate Route: The description of the rerouted part in ICAO field15 syntax including cruising speed and flight level.
• Alternate Route Length (NM): The length of the proposed alternate route in Nautical Miles.
• Difference: The difference in Nautical Miles of the proposed alternate route with the current route.
• CDR: The worst CDR applied to this route.
  Possible values are:
  1. ATS: when the ATS route is always plannable.
  2. 1: for permanently plannable conditional route. Closure is published in NOTAM and EAUP.
  3. 2: for non permanently plannable conditional route. Opening can be published in a EAUP.
  4. 3: for non plannable conditional route. Used only at short notice bon ATC instructions.
  5. Not Available: for non plannable conditional route.

 Following a reroute evaluation, the selected alternate route in the alternate routes list remains selected and is appended with the following elements:

• reroute evaluation query stamp: Following a reroute evaluation, this field displays the date and time (dd-hh:mm format) when the reroute evaluation request was processed.
• reroute evaluation status: The possible values are:
  1. Try Ok: if the last Try on the alternate route was successfully processed by the CFMU system.
  2. Try Failed: if the last Try on the alternate route unsuccessful.
• reroute request error status: Following an unsuccessful reroute evaluation, the reroute request error status field is displayed immediately after the reroute evaluation query stamp (otherwise it is not displayed). The possible values are:
  1. NOT AUTHORISED FOR THIS FLIGHT: <restriction>
  2. ONLY TRY IS AUTHORISED FOR THIS FLIGHT: <restriction>
  3. A SLOT HAS BEEN FORCED FOR THIS FLIGHT
  4. FLIGHT ALREADY REROUTED BY: <why> <state>
  5. FLIGHT HAS A SIP
  6. ALREADY A SIP OR RRP OR RRN OR FLS RESPBY
  7. SUSPENDED DUE TO EXCEPTIONAL CONDITION
  8. SUSPENDED DUE TO REGULATION
  9. BIG (SHIFT) +DELAY ON NEW ROUTE
  10. INSUFFICIENT IMPROVEMENT ON NEW ROUTE
  11. SAME MOST PENALISING REGULATION AS OLD ROUTE
  12. BIG SHIFT ON NEW ROUTE
  13. DUE TO SHIFT ON NEW ROUTE: INSUFFICIENT IMPROVEMENT
  14. OVERLOAD
  15. AOWIR FUNCTION CURRENTLY DISABLED
  16. NOT IFPS COMPLIANT
  17. <indicator> NOT ALLOWED IN ROUTE
      where:
      1. <restriction> = NOT_RESTRICTED | FLIGHT_OPTION | STATUS_OF_FLIGHT | SUSPENSION_STATUS | MIN_SHIFT_DELAY | APPLY_TRY_TIME | CLOSE_TO_OBT | ALREADY_REROUTED | ALREADY_PROPOSAL
      2. <why> = NOT_REROUTED | ATFM | CWIR | AWIR | AOWIR.
      3. <state> = PRODUCED | EXECUTED | TIMED_OUT | REJECTED | REVOKED | NO_MATCH
• New Take Off Time: The new Take Of Time, if available.
  After the time, a letter C for Calculated indicates that using this new route, the flight is subject to regulation.
• New Most Penalising Regulation: The most penalizing regulation, if any.
• New Route Length (NM): The length of the alternate route in Nautical Miles following a reroute evaluation, if available.
  Not displayed if reroute request error status is NOT IFPS COMPLIANT.
• Difference: The difference in Nautical Miles of the alternate route with the current route following a reroute evaluation.
  Not displayed if reroute request error status is NOT IFPS COMPLIANT.
• New Shift + Delay: The new Shift + Delay time in minutes, if available.
• Difference: The difference compared to the current Shift + Delay.
• New Estimated Elapsed Time: The new Estimated Elapsed Time, if available.
• Difference: The difference compared to the current Estimated elapsed time.
• Overloaded Traffic Volume Id: Only displayed if the reroute request error status is OVERLOAD.
• Suspended Status: Indication if the flight is suspended or not.
  Only displayed if exceptional condition on the route.
• Worst Shift Time Elapsed: Only displayed if exceptional condition on the route and if the flight is not suspended.
• RVR: Only displayed if exceptional condition on the route.
• XCD Traffic Volume Id: Traffic volume where the exceptional condition is applicable.
  Only displayed if exceptional condition on the route.
• FCM Required Status: Only displayed if exceptional condition on the route.
• IFPS Error: List of IFPS error messages.
• remarks: Additional remarks if any.