1 Introduction
ETOPS (EDTO) Beyond 180 Minutes
How to use the ETOPS Beyond feature.
We estimate that this will take 3 minutes to complete.
2 Detailed Explanation
Introduction
N-Flight Planning's
current ETOPS functions met previous ETOPS direction by
leveraging the calculation of a specific time/distance circle
from an airport (in still air) to confirm that the route of
flight remained within the approved area. More recent ETOPS
regulations have focused upon time limitations of a "Time
Limited System" and/or “Cargo Fire Suppression System” aboard
the aircraft, rather than a specific approved time/distance.
Operations
conducted in accordance with ETOPS Beyond 180 Minutes factor in
actual wind and weather conditions when confirming the Time
Limited System and/or Cargo Fire Suppression System time is not
exceeded. N-FP will continue to draw the ETOPS Circles based
upon "Still Air". However, the actual calculated
Diversion Time, checked against the TLS/CFSS value, now accounts
for the actual wind and weather requirements for operators
conducting ETOPS Beyond 180 Minutes operations.
Introduction
The following
settings are needed in order to use the Beyond 180 Minutes option. Ensure they
are all set appropriately for your specific scenario.
A process
follows to help you learn how to use this feature.
NFP-2149 – ETOPS (EDTO) Beyond 180 Minutes: Airline Code Parameters (FOMS 170)
A setting is
available in Airline Code
Parameters for users to control their ETOPS Beyond 180
Minutes operations.
This setting
controls whether a Warning or Error appears in
situations where the diversion time exceeds the TLS/CFSS time.
NFP-2149 – ETOPS (EDTO) Beyond 180 Minutes: Aircraft Characteristics (FOMS 220)
Additional fields
in Aircraft Characteristics include TLS Time, CFSS Time, and a Beyond check
box to enable an ETOPS scenario
for use in
ETOPS Beyond 180 Minute operations. At least one scenario must
have a value above 180 and be enabled for Beyond to be
used for ETOPS
Beyond 180 Minute operations, and one or both of the TLS (Time
Limited System) or CFSS (Cargo
Fire Suppression System)
time fields must be filled in.
The maximum value for these fields is 999.
NFP-2149 – ETOPS (EDTO) Beyond 180 Minutes: ETP Scenarios (FOMS 231)
In order to perform
the ETOPS Beyond 180 Minute diversion time calculations,
N-Flight Planning leverages our current ETP functionality.
The TLS/CFSS
Check field
allows the user to designate an ETP scenario to be used for
determining compliance with the
TLS or CFSS
time limits.
The ETP Policy
used during flight plan calculation must include at least one
scenario designated for TLS or CFSS. You can modify an
existing
scenario or create a new one to be used for TLS or CFSS check.
NFP-2149 – ETOPS (EDTO) Beyond 180 Minutes: ETP Scenarios (FOMS 231)
In the ETP Policies
options, you must create or designate a policy to include the
scenarios for the TLS or CFSS check.
Policy
designations are named at your discretion, but must be at least
two alpha characters long. Once your policy is selected or
named, add the
scenarios you
want to use from the appropriate drop down lists.
NFP-2149 – ETOPS (EDTO) Beyond 180 Minutes: Plan Screen
For you to be able
to determine whether you are using an ETOPS Beyond 180 Minute
scenario for your flight plan calculations,
the ETOPS
section of the Plan Screen contains an indicator label.
NFP-2149 – ETOPS (EDTO) Beyond 180 Minutes: Functional Changes
The following conditions are required for ETOPS Beyond 180 Minutes operations:
■ The aircraft must have an ETOPS scenario (Time/Distance value) enabled for Beyond
■ The aircraft must have either TLS or CFSS time values filled in
■ At least one ETP Scenario in the ETP Policy must be designated for TLS or CFSS checks
Compute will error if none are designated
■ That same ETP
Scenario must match which of the time values are filled in for
the aircraft (that is, if the user
only wants to
perform a TLS check, the scenario must be enabled for TLS and
the aircraft must have a TLS time value)
Compute will error if no match found
■ All ETOPS stations must be used for ETP pairs
Compute will error if not all stations are used
■ Depending on user
setting in Airline Code Parameters, if one or both checks
(TLS/CFSS) fail, the system alerts the
user of the first one
that fails.
Now, let's plan a flight based on these settings.
Click
the Plan tab.
HINT
Type hint to help learners. (12pt)
Ensure your flight is selected (highlighted in green).
Click
the 
button.
Click
the 180 min ... Beyond list
item.
Click
the Flight button.
The Beyond option now shows.
Click
the ETOPS check
box.
Click
the ETP check
box.
Click
the First ETOPS station input
field.
Enter NFFN into
the First ETOPS station field.
Click
the Second ETOPS Station input
field.
Enter CYVR into
the Second ETOPS Station field.
Click
the To ETP button.
Click
the Compute button.
Please
click Next to continue.
Note the ETP points are midway through the flight, far beyond the ETOPS circles.
HINT
If you want to display ETOPS Beyond information in your flight plan, please contact NAVBLUE Support.