Can anybody post, as I am experiencing problems when landing with speed,decent,distance to start decent and landing on auto poilet. .

# Correct time,decent and speed for landing

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It all depends on the aircraft you are flying especially the decent rate.

If you search on YouTube there a are few good tutorial video’s to help with this thanks to FDS.

I’ve borrowed this from someone and I can tell ya its pretty accurate:

Calculating top cruise altitude:

Formula: Total Route Distance / 2

Subtract 10 from Ans

Divide by 3

Multiply by 1000

Example: TRD: 200nm/2 = 100nm

100nm - 10 = 90nm

90nm / 3 = 30

30 x 1000 = 30,000ft

So cruise at any altitude at or lower than FL300.

Calculating top of descent distance:

Formula: Cruise Altitude / 1000

Multiply by 3

Add 10 (optional)

Example: 30,000 / 1000 = 30

30 x 3 = 90

90 + 10 = 100

Start descent at 100nm out. This provides enough time to descend incrementally and level off at a reasonable speed.

Calculating VS:

Formula: Ground Speed x 5

Add 100 (optional)

For descent: Ans x -1

Example: 500 x 5 = 2500

2500 + 100 = 2600

2600 x -1 = -2600

Use the *Search* button…

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Don’t you just love math!

could you get VS calculation by multiplying with airspeed?

You must have scrolled down pretty far to find this topic. Please don’t necropost In future :)