Check the wind. It is at 90° to the runway, so the headwind component is actually zero. Try it again with no wind.

[quote="jukzizy" post=12574]Refer to take off weight chart figure 5 (piper)
Given the following information:
Shade temp: +25*C
Pressure Height: 3800 Ft
W/V: 07/25 KTS
Surface: Long wet Grass
Slope : 1% diwn to west
Toda: 1500 M
Take off weight= 980 Kg
Find the maximum take off distance required?
I got 1070 metres
Sir can you please cross check my chart if it's right?

sorry I missed to write w/v in which is 07/25kts..

How can you calculate anything without a runway direction?

You will need a runway and W/V to calculate the HW/TW for TO.

Sorry I forgot to write the run way in and wind direction

Rwy- 07/25

W/V 070 *M / 18 Kts

This thread emphasises the need for putting all the information down at the start.

Some comments

(a) presumably you meant for the question to say "minimum takeoff distance required", rather than maximum ?

(b) you have given us two different W/Vs

(c) the chart doesn't appear to match the data

Suggest you rework the plot and repost so we might be able to offer comments.

All right thank you sir

We will await your revised chart ...

The answer I got is 1495 metres..

A little difficult to follow your lines in the scan but around 1500 m looks to be pretty close to the mark.