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ETP on ND


john0718

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The EQUITIME POINT page displays the Equitime Point (ETP) computed along the F-PLN route
between two referenced positions (airports, waypoints or NAVAIDs) defined by the flight crew (Refer
to DSC 22_20 Auto Flight - Flight Management / 50 Controls and Indicators / 10 MCDU - Page
Description).

This website may be of help to you:

http://www.a320dp.com/A320_DP/nav-flight-management/sys-14.7.7.html

 

Taken from the actual procedure:

 

At the first access to the page, the FM proposes origin and destination airports as defaulted
positions.

 

The flight crew may overwrite these two positions and insert the wind in their vicinity at the applicable
CRZ FL.

 

The FM then computes the resulting ETP, using the managed or selected speed and blending the
forecasted winds along the F-PLN route with the inserted winds.

 

The FM provides :
• TIME and DIST from aircraft position (or origin on ground) to ETP
• The BRG/DIST from ETP to the defined positions
• TIME overhead each position, assuming the aircraft flies from present position to the defined
position via the ETP
• (ETP) pseudo waypoint is displayed on the ND along the F-PLN.
• ETP location with regard to the subsequent waypoint.

 

ETP ENTRY

 

PRESS the DATA key
SELECT the EQUITIME POINT prompt.
The EQUITIME POINT page is displayed. The origin and destination airports are used by default.
ENTER the REF POINT 1 in the 1L field.

ENTER the associated wind in the 2L field.
The wind to be inserted is the wind in the vicinity of the reference point at the CRZ FL.
ENTER the REF POINT 2 in the 3L field.
ENTER the associated wind in the 4L field.
The system displays the ETP location with regards to the next waypoint of the active flight plan
following the ETP in the 5R field, and the A/C TO (ETP) predictions in the 6R field.

 

Note: ‐ The ETP pseudo waypoint is not displayed on the MCDU F-PLN page. In order to locate
it easily, or when closing up the applicable ETP, the TIME MARKER may be used. This
allows the flight crew to visualize ETP pseudo waypoint in advance on the F-PLN page or
to prepare the next applicable ETP on the EQUITIME POINT page.
‐ The ETP is computed using speed according to current mode (managed or selected).

 

 

 

 

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8 hours ago, john0718 said:

Hello,

 

Thank you for this very complete answer.

It sounds great for me.

 

have a nice day,

 

 

 

 You are most welcome my friend.

 

Best wishes for Happy Flights!

 

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