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jahurz

ATR72 vspeed data

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I thought this might be helpful for those wanting to set vspeeds for normal condition. Got this data from ATR performance chart book from a certain airline.

Gross weight= 17t
V1=104KTS
V2=110KTS
VAPP= 96KTS
WHITE BUG= 121KTS
RED BUG = 145KTS

Gross Weight=18t
V1=104kts
V2=110KTS
VAPP=99KTS
WHITE BUG=125KTS
RED BUG=149kts

Gross Weight=19t
V1=104kts
V2=110KTS
VAPP=102KTS
WHITE BUG=129KTS
RED BUG=153kts


Gross Weight=20t
V1=105kts
V2=110KTS
VAPP=105KTS
WHITE BUG=132KTS
RED BUG=157kts


Gross Weight=21t
V1=106kts
V2=111KTS
VAPP=108KTS
WHITE BUG=136KTS
RED BUG=161kts

Gross Weight=21.5t
V1=109kts
V2=113KTS
VAPP=109KTS
WHITE BUG=138KTS
RED BUG=163kts

Gross Weight=22t
V1=111kts
V2=114KTS
VAPP=111KTS
WHITE BUG=139KTS
RED BUG=165kts

Gross Weight=22.5t
V1=112kts
V2=115KTS
VAPP=113KTS
WHITE BUG=140KTS
RED BUG=167kts

Gross Weight=23t [Take note 23t take off is only available on selected airlines that ordered such planes and i believe Carenado's version does not support it]
V1=114kts
V2=117KTS
VAPP=115KTS
WHITE BUG=141KTS
RED BUG=169kts

Additonal info:
1)Greenbug is your v1 and most v1s are the same with vr.
2)Redbug is your icing condition speeds meaning you never dip below the red bug speed with 0 flaps.
3)On approach it is fairly common to add vref+10kts on your vapp until down to below 100feet. So if your vapp is for e.g 112kts your approach would be around 122knots down to about 100feet above the airfield you would then slow down to your vapp. You have to take account of wind conditions as well but i guess this rough estimate would do its job.
4)ATR72-500 burns around 700kg fuel per hour so this should give u a rough estimate on fuel planning.
5)Initial climb would be your white bug speed+5kts. It is only recommended to climb with whitebug+5kts if you're trying to clear over terrain in good weather. Standard climb at acceleration height would be 170kts.
6)On one of our shortest runway with 1370m length we take off without packs on and no tailwind component is allowed.
7)Never operate hotel mode if you have tailwind component exceeding 5knots at the position your parking at.
 

Reduced flaps landing configuration for flap 15 landing
17t vapp=107kts
18t vapp=111kts
19t vapp=114kts
20t vapp=117kts
21t vapp=120kts
22t vapp=124kts
22.5t vapp=125kts

Well hope this helps.

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Yes, indeed - thank you!! 

Cheers 🍺


"...now let's get this thing on the hump - we've got some flyin' to do!" ~ Major Kong from "Dr. Stranglove"

Scott Cebula

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