V SPEEDS - Regulatory
V1
V2
V2MIN
V3
V4
Take-off Decision Speed
Take-off Safety Speed
Take-off Safety Speed – Minimum
Flap Retraction Speed
Steady Initial Climb Speed
VA
VB
VC
VD
VF
Design Speed – Maneuvering
Design Speed – Max. Gust Intensity
Design Speed – Cruising
Design Speed – Diving
Design Speed – Flap
Vat
Airspeed at Threshold – Target
Airspeed at Threshold – Target (all
engine operative)
Airspeed at Threshold – Target (one
engine inoperative)
Approach Speed
Take-off Decision Speed (used in
documentation of military aircraft
performance)
Rotation Speed (used in military)
Refusal Speed
Vat 0
Vat 1
Vapp
Vcef
Vrot
Vref
V SPEEDS - Others
VDF
VEF
VFC
VFE
VFTO
VH
VLE
VLO
VLOF/
VTO
VMC
VMCA
VMCG
VMCL
VMO
VMU
VNE
VNO
VO
VR
VS
VS 0
VS 1
VSR
VSR 0
VSR 1
VSW
VTOSS
VX
VY
MMO
Demonstrated Flight Diving Speed
Engine Fail Speed (assumed during
take-off)
Stability Characteristics Speed –
Max.
Flap Extended Speed – Max.
Final Take-off Speed
Level Flight Speed (at maximum
continuous power)
Landing gear Extended Speed –
Max.
Landing gear Operating Speed –
Max.
VSL
VS 1g
VTD
VTGT
Lift-Off Speed/ Take-Off Speed
VX SE
Minimum Control Speed
Minimum Control Speed in Air
Minimum Control Speed on Ground
Minimum Control Speed on Landing
Configuration
Maximum Operating Limit Speed
Maximum Unstick Speed
Never Exceed Speed
Normal Operations Speed – Max.
Operating Maneuvering Speed –
Max.
Rotation Speed
Stall Speed
Stall
Speed
on
Landing
Configuration
Stall Speed in Specific Configuration
Stall Speed – Reference
Stall Speed – Reference on Landing
Configuration
Stall Speed – Reference in Specific
Configuration
Stall Warning Speed
Take-Off Safety Speed – Rotorcraft
Best Angle of Climb Speed
Best Rate of Climb Speed
Mach Operating Speed Limit– Max.
VBE
VBG
VBR
VFS
VLLO
VPD
VY SE
VZ RC
VFl up
VSl in
VClean
VP
Vmd
Vmp
Vmbe
Vmin
Vms
Vp
Vra
Vsse
Vt
Vtocs
Vtos
Vt
Best Endurance Speed
Best Gliding Speed – Power-off
Best Range Speed
Final Segment of a departure with
one power plant failed
Landing Light Operating Speed –
Max.
Parachute Deployment Speed –
Max.
Stall Speed at Specific Configuration
Stall Speed at 1g Load Factor
Touchdown Speed
Target Speed
Best Angle of Climb Speed – Single
Engine (on light twin-engine aircraft)
Best Rate of Climb Speed – Single
Engine (on light twin-engine aircraft)
Zero Rate of Climb Speed
Flap Retraction after Take-Off – Min.
Slats Retraction after Take-Off –
Min.
Clean Configuration Speed – Min.
Pattern Speed
Minimum Drag
Minimum Power
Maximum Brake Energy Speed
Minimum Speed
Minimum Sink Speed
Aquaplaning Speed
Rough Air Speed
Safe Single Engine Speed
Threshold Speed
Take-Off Climb out Speed
Positive Rate of Climb Speed – Min.
(one engine inoperative)
Threshold Speed – Max.
max
Vwo
Window-open Operating Speed