Aeropro A220 - 2. Operating Limitations; 2.1 Stall Speed (Vs and Vso); 2.2 Flaps Extended Speed Range (Vso to Vfe)

Aeropro CZ - A220 taildragger - Pilot Operating Handbook and Flight Training Supplement
March 21, 2020
18
3. Operating limitations
Airspeed indicator system calibration:
As requested by ASTM F2245-18 all flight speeds are presented as calibrated airspeeds in miles per
hours (MPH). As the calibrated airspeed cannot be usually determined by a simple reading of the aircraft
airspeed indicator, corresponding Indicated airspeeds in miles per hours (MPH) are also presented in this
document. All airspeed values in this handbook assume no instrument error.
3.1 Stall speed at maximum take-off weight (V
S
and V
SO
)
Aircraft
configuration
Stall speed – angle of bank 0°
(Indicated Air speed)
(Calibrated Air speed)
Flaps down (V
so
)
43 mph
45 mph
Flaps up (V
s
)
.49 mph
.50 mph
WARNING
The stall speed mentioned above are with wings level. Once any angle of bank
(e.g. turn) is encountered the stall speed is significantly increasing.
Example: angle of bank 60° ……. V
S
= 73 MPH
The more bank – the higher the stall speed. This simple rule is especially important when a turn at
maximum permitted angle of bank (60°) is performed. Do not start the turn until you have sufficient
airspeed reserve – recommended entry speed is 92 MPH. Full throttle is also essential to have sufficient
thrust reserve as the drag is increasing during a steep turn.
3.2 Flaps extended speed range (V
SO
to V
FE
)
MPH
(Indicated Air Speed)
MPH
(Calibrated Air Speed)
Lower limit
41
45
Upper limit
93
90
MPH
(Indicated Air
speed)
MPH
(Calibrated Air
speed)
40 44
46 48
57 59
69 69
81 79
92 89
104 99
115 109