July 20, 20196 yr 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, 20196 yr by jahurz
July 20, 20196 yr Thank you!! Cheers 🍻 Scott "...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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