Fokker 50 Vspeeds

[jahurz 9]

Again due to lack of documentation anywhere i'll just post the vspeeds and etc down below here. Data here is from an airline that no longer operates Fokker 50. Some data is NIL as the company does not use it but i believe other operators have data for it.  Note data below is for dry runway conditions.

Gross Weight: 14t
Flaps 5:
v1= 92kts
vr= 92kts
v2= 95kts
vfr= 97kts
vfto= 101kts
Flaps 5 Take off length= 800m

Flaps 10 NIL
Flaps 15 NIL

flaps 25 vref= 88kts
flaps 35 vref= NIL

Gross Weight: 15t
Flaps 5:
v1= 92kts
vr= 92kts
v2= 95kts
vfr= 101kts
vfto= 105kts
Flaps 5 Take off length= 841m

Flaps 10 NIL
Flaps 15 NIL

flaps 25 vref= 91kts
flaps 35 vref= NIL

 

Gross Weight: 16t
Flaps 5:
v1= 95kts
vr= 95kts
v2= 97kts
vfr= 104kts
vfto= 108kts
Flaps 5 Take off length= 904m

Flaps 10 NIL
Flaps 15 NIL

flaps 25 vref= 94kts
flaps 35 vref= NIL

 

Gross Weight: 17t
Flaps 5:
v1= 98kts
vr= 98kts
v2= 100kts
vfr= 107kts
vfto= 112kts
Flaps 5 Take off length= 1014m

Flaps 10
v1= 95kts
vr= 95kts
v2= 97kts
vfr= 107kts
vfto= 112kts
Flaps 10 Take off length= 1005m
Flaps 15 NIL

flaps 25 vref= 94kts
flaps 35 vref= 92kts

 

 

Gross Weight: 18t
Flaps 5:
v1= 101kts
vr= 101kts
v2= 103kts
vfr= 110kts
vfto= 115kts
Flaps 5 Take off length= 1139m

Flaps 10
v1= 98kts
vr= 98kts
v2= 100kts
vfr= 110kts
vfto= 115kts
Flaps 10 Take off length= 1125m

Flaps 15
v1= 95kts
vr= 95kts
v2= 97kts
vfr= 110kts
vfto= 115kts
Flaps 15 Take off length= 1045m

flaps 25 vref= 99kts
flaps 35 vref= 95kts

 

 

Gross Weight: 18.5t
Flaps 5:
v1= 103kts
vr= 103kts
v2= 104kts
vfr= 112kts
vfto= 117kts
Flaps 5 Take off length= 1210m

Flaps 10
v1= 100kts
vr= 100kts
v2= 101kts
vfr= 112kts
vfto= 117kts
Flaps 10 Take off length= 1190m

Flaps 15
v1= 97kts
vr= 97kts
v2= 98kts
vfr= 112kts
vfto= 117kts
Flaps 15 Take off length= 1130m

flaps 25 vref= 101kts
flaps 35 vref= 96kts

 

Gross Weight: 19t
Flaps 5:
v1= 104kts
vr= 104kts
v2= 105kts
vfr= 113kts
vfto= 118kts
Flaps 5 Take off length= 1285m

Flaps 10
v1= 101kts
vr= 100kts
v2= 103kts
vfr= 113kts
vfto= 118kts
Flaps 10 Take off length= 1265m

Flaps 15
v1= 98kts
vr= 98kts
v2= 100kts
vfr= 113kts
vfto= 118kts
Flaps 15 Take off length= 1163m

flaps 25 vref= 102kts
flaps 35 vref= 97kts

 

Gross Weight: 19.5t
Flaps 5:
v1= 106kts
vr= 106kts
v2= 107kts
vfr= 115kts
vfto= 120kts
Flaps 5 Take off length= 1370m

Flaps 10
v1= 103kts
vr= 103kts
v2= 104kts
vfr= 115kts
vfto= 120kts
Flaps 10 Take off length= 1345m

Flaps 15
v1= 100kts
vr= 100kts
v2= 101kts
vfr= 115kts
vfto= 120kts
Flaps 15 Take off length= 1235m

flaps 25 vref= 103kts
flaps 35 vref= 99kts

 

Gross Weight: 20t
Flaps 5:
NIL[I believe there's permissible vspeeds unfortunately the paper i have the company does not permit flaps 5 take off with this gross weight]

Flaps 10
v1= 104kts
vr= 104kts
v2= 105kts
vfr= 116kts
vfto= 121kts
Flaps 10 Take off length= 1429m

Flaps 15
v1= 101kts
vr= 101kts
v2= 102kts
vfr= 116kts
vfto= 121kts
Flaps 15 Take off length= 1312m

flaps 25 vref= 105kts
flaps 35 vref= 100kts

 

Gross Weight: 20.5t
Flaps 5:
NIL[I believe there's permissible vspeeds unfortunately the paper i have the company does not permit flaps 5 take off with this gross weight]

Flaps 10
v1= 106kts
vr= 106kts
v2= 107kts
vfr= 118kts
vfto= 123kts
Flaps 10 Take off length= 1517m

Flaps 15
v1= 103kts
vr= 103kts
v2= 104kts
vfr= 117kts
vfto= 123kts
Flaps 15 Take off length= 1394m

flaps 25 vref= NIL exceed MLW
flaps 35 vref= NIL exceed MLW

 

Gross Weight: 20.8t
Flaps 5:
NIL[I believe there's permissible vspeeds unfortunately the paper i have the company does not permit flaps 5 take off with this gross weight]

Flaps 10
v1= 107kts
vr= 107kts
v2= 107kts
vfr= 118kts
vfto= 124kts
Flaps 10 Take off length= 1552m

Flaps 15
v1= 103kts
vr= 103kts
v2= 104kts
vfr= 118kts
vfto= 123kts
Flaps 15 Take off length= 1445m

flaps 25 vref= NIL exceed MLW
flaps 35 vref= NIL exceed MLW


Additional notes
-Fairly common to add 10knots to your vref landing. So for e.g if your vref is 99knots you'll be approaching at 109knots and maintaining down to about 100feet above the runway then you'll slow down to your vrefs. Do note you may even have to add more speed to your vref depending on wind conditions. 
-Flaps 35 approach is rarely used except for runway with lengths shorter than 1500m or approach that requires a very steep glideslope gradient.
-Preferred take off flaps is 10 on the documentation i am reading. But i am sure for other airlines will prefer flaps 5 if the runway is long. Flaps 15 again for short runway depending on runway length and conditions.
-Take off to acceleration height retract your flaps once speed is at vfr and check if the speed is at vfto switch engine management to clb and wait for the speed to climb to 140knots ias. Use climb mode ias 140. If you've outclimbed terrain or atc gives a go ahead use v/s +500fpm and wait for the speed to go up to 170knots ias and then engage ias climb at 170knots. Best climb would be your vfto+5kts but again only used when needed.
-Taking off with tailwind is risky on short runway. Take note a direct tailwind of just 5knots might need you take 200m more runway than required on calm conditions.

 

Hope this helps others.

Edited July 20, 2019 by jahurz

[ndflieger 55]

Thank you!!

Cheers 🍻

Scott

[David Keff 1]

Wow, thanks, this is helpful.