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PPRuNe Forums (https://www.pprune.org/)
-   Tech Log (https://www.pprune.org/tech-log-15/)
-   -   TOD calculation query (https://www.pprune.org/tech-log/624239-tod-calculation-query.html)

Information Unicorn 17th August 2019 00:37
Originally Posted by Cognoscenti (Post 10547169)
You guys sound like great fun. Jesus, Mary and Joseph

(Sarcasm. Won’t be joining for dinner)
Ssssh!

Don’t click on this thread then! I’m sure you have funner things to do...

FlightDetent 17th August 2019 03:20
Trying to learn, past the office hours, how to fly the airplane effectively without VNAV gizmos is frowned upon. Who is the magenta child here?

But then I should know better than to feed a troll.

oceancrosser 17th August 2019 14:00
Originally Posted by FlightDetent (Post 10547267)
Trying to learn, past the office hours, how to fly the airplane effectively without VNAV gizmos is frowned upon. Who is the magenta child here?

But then I should know better than to feed a troll.
But then again no reason to overly complicate things.
What I tell my trainees, is to plan approaching 10.000’ at 40 track nm out, high speed. Then you have just the distance needed for slow down and manuevers.

Smythe 17th August 2019 14:35
With the RNP-AR procedures, there is a tick that shows TOD, likely put there so the pilot doesnt wonder why the thrust suddenly pulls back to idle!

Banana Joe 17th August 2019 18:53
Originally Posted by Smythe (Post 10547649)
With the RNP-AR procedures, there is a tick that shows TOD, likely put there so the pilot doesnt wonder why the thrust suddenly pulls back to idle!
But sometimes you get shortcuts, and if you know ATC is going to give you one, logic says you should act accordingly.

And anyway I'm a pilot, not a passenger sitting at the pointy end.

FlightDetent 17th August 2019 19:53
Originally Posted by Smythe (Post 10547649)
With the RNP-AR procedures, there is a tick that shows TOD, likely put there so the pilot doesnt wonder why the thrust suddenly pulls back to idle!
😁 Wouldn't work on the 'bus, design rules the aircraft cannot do what is not commanded.

Busserday 17th August 2019 20:05
Originally Posted by FlightDetent (Post 10547830)
😁 Wouldn't work on the 'bus, design rules the aircraft cannot do what is not commanded.
Highly evolved tech might allow commanding a descent at a specific point (TOD) by selecting a cleared to altitude and observing the result.

FlightDetent 17th August 2019 20:35
Originally Posted by Busserday (Post 10547834)
Highly evolved tech might allow commanding a descent at a specific point (TOD) by selecting a cleared to altitude and observing the result.
Like I said, not on the 'bus. Design rules, no self-action.

Check Airman 17th August 2019 21:56
Originally Posted by FlightDetent (Post 10547850)
Like I said, not on the 'bus. Design rules, no self-action.
That can be debated :}

Busserday 17th August 2019 22:42
Originally Posted by FlightDetent (Post 10547850)
Like I said, not on the 'bus. Design rules, no self-action.
Uncommanded pitch change at programmed acceleration altitude? Don't overspeed your flaps please.

Check Airman 17th August 2019 23:25
Originally Posted by Busserday (Post 10547904)
Uncommanded pitch change at programmed acceleration altitude? Don't overspeed your flaps please.
In fairness, if it does that, it SHOULDN'T overspeed the flaps.

FlightDetent 18th August 2019 03:37
Originally Posted by Busserday (Post 10547904)
Uncommanded pitch change at programmed acceleration altitude?
Fair call, there's also the pitch down at G/S capture or FINAL APP and pitch up shortly after LAND. Some of ours have auto TCAS, but it's a taboo until training is completed.

SFI145 20th August 2019 03:26
Descent Profile
 
Such fun to see professional pilots attempting to master arithmetic which an 11-year old can solve in their head.

Intrance 20th August 2019 07:19
Yeah, some people do need to heed the KISS principle a bit more. But there is no harm in discussing it for input.

For me and my type, distance times three works fine, then adjust for weather by simple logic... tailwind? Go down earlier. And remember that there is usually no ban on level flight during any descent or arrival :rolleyes:. So don’t stress it if you are off by a bit or too early on descent. Stay on the safe side. Also learn to say “unable” to ATC if you are unsure if you can do what is asked.


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