Airspeed Review And Altitude

Va- design manuvering speed
Vs- stall speed, clean
Vso- stall speed landing
Vs1- stall speed specific config
VF- design flap speed
Vle- max landing gear extended speed
Vfe- max flap extended speed
Vno- max structural cruise speed
Vne- never exceed speed
Vx- best angle of climb
Vy- best rate of climb
Vg- best glide speed
Vref- calculated final approach speed

manuvering speed (114)

best angle of climb (66kts)

best rate of climb (75)

stall speed dirty (41kts)

stall speed clean (50kts)

max structural cruise speed (124kts)

max flaps extended speed (101kts)

never exceed speed (155kts)

best glide (70kts)

White Arc
- flap opearting range
- min is Vso and Max is Vfe
Green Arc
- normal operating range
- starts at Vs1 and ends at Vno
Yellow Arc
- caution range
- fly only in smooth air with caution
- is relative to Va
Red Line
- warning range Vne
- structural damage is possible here

IAS
- indicated air speed
CAS
- calibrated air speed
- is the indicated airspeed corrected for instrument and position errors
EAS
- equivalent airspeed
- calibrated airspeed corrected for compressibility error
TAS
- true airspeed
- actual speed through the air
- corrected for non-standard temperatutre and pressure
Mach Number
- the ratio of true airspeed relative to local speed of sound
Ground Speed
- actual speed across the ground
- true airspeed corrected for wind conditions
Critical Mach
- lowest mach number at which the airflow over any part of the aircraft reaches the speed of sound

Below 10,000ft MSL
- 250kts
Under Class Bravo or inside VFR Corridor through Class Bravo
- 200kts
At or below 2,500ft within 4nm of Class Charlie or Delta Airport
- 200kts
Mach 1.0 or Higher
- speed of sound
- above 10,000ft MSL

Indicated Altitude
- uncorrected altitude indicated on altimeter when barometric pressure is set to current pressure setting
Pressure Altitude
- altitude corrected for nonstandard pressure
Density Altitude
- pressure altitude corrected for non-standard temperature
True Altitude
- altitude above mean sea level (MSL)
Absolute Altitude
- altitude above ground level