TORA TODA ASDA LDA Explanation - [Stopway, Clearway and Displaced threshold]

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The TORA, TODA, ASDA, and LDA are takeoff and landing declared distances.

In order to understand in full these distances, we have to know what a Stopway a Clearway, and a Displaced Threshold are.

Every Airport has 2 different runway directions for takeoff and Landing.

The TORA, TODA, ASDA, and LDA can be different from one direction to the other on the same runway.

The stopway, the clearway, or the displaced threshold may be present on one side only, on both sides, or on neither side of the runway.

So, for example, if you have the stopway on one side of the runway only you have two different ASDAs depending on the takeoff direction.

The TORA (Takeoff Run Available) is the available runway length useable for the ground run of the aircraft during takeoff. It is the distance from the threshold (or displaced Threshold if available) to the other end of the runway or the end of the stopway if available.

The TODA (Takeoff Distance Available) is the length of the TORA plus the Clearway if available, this distance is used to start the takeoff run and transit into the initial climb phase.

The ASDA (Accelerate Stop Distance Available) is the length of the TORA plus the stopway of available. The ASDA is calculated in case of a rejected takeoff.

The LDA (Landing Distance Available) is the length of the runway useable for landing and it goes from the threshold to the end of the runway or the end of the displaced threshold if available.

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👇To watch the video regarding the V1 decision Speed click the link below👇

👇To watch the video about the ILS categories click the link below👇

👇To watch the video about the Displaced Threshold click the link below👇

#PILOTCLIMB

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Disclaimer:
THIS VIDEO IS FOR ENTERTAINMENT PURPOSES ONLY.
NOT FOR REAL-LIFE OPERATIONS.
PLEASE REFER TO THE OFFICIAL MANUAL AND DOCUMENTATION.
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whenever i want to refresh my lesson i see your video.... great job

syedata
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Hello Captain! I'm a student pilot and I'm flying to a different airport tomorrow. XC flight with my instructor. This video was excellent. Subscribed!

miguelmarrufoel
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Brilliantly explained! Thank you for this! Short, sweet and to the point 🙂

peteallennh
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At university we have taught that... 1/2 of TORA < CWY then you adopt it... BUT IF 1/2 of TORA > CWY... Then you use the existing CWY...

michaelfarano
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Best explenation I have encountered. Tenx

umutgulmez
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it makes me refresh my knowledge for interview tomorrow, thanks Capt!

nabielharlyansyah
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Great video i had a problem with those but now i understand them keep it up

gabrielkastoun
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Superb Captain - cannot be explained any better than this.

Larkano
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well done video; the different colored markings help to keep it simple.

Capt-thym
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Keep your helping up captain. you're the best

fewscattered
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Fantastic job! Captain!!! Started to follow your channel

sivakumaran
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This explanation is very clear; very well done sir!

raccoonair
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Finally I understood all this boring stuff😁, thanks Captain!

ivaivanov
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Thank you captain your explanation very useful and great

Aviatorpassion
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Great Video, Capt.
Keep up the good work.
I'm am an Airline Pilot from Nepal (First Officer).

pilotsabin
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Some ideas for videos

-why dewpoint is important?
Why in the metar Dewpoint is always to be considered? What does dewpoint tell and what different changes happen when dewpoint increases or decreases?


-RAAS Runway Awareness and Advisory system


How do you read weather charts and how do you know how to plan fuel?
Without software help.

ahmedsmart
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Great explanation as always, thank you so much for all your excellent informative videos!

roberthatcher
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Hi Captain... nice explanation, anyway i have a question here... I was thinking when would TODA, TORA, ASDA, and LDA be equal? ...thanks

SkySurfer-Q
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Let me know in the comments below if you any question regarding runway declared distances! happy Landings...

PILOTCLIMB
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Thanks for all videos¡¡, one question, for the TODA, if a runway does have stopway, it should be considered like a distance for the take off, no? or it can have not the same area clear of obstacles for the initial climb than a clearway

luissol