S201 AFM
2 - LIMITATIONS
2.4 - AIRSPEED INDICATOR
MARKINGS
27/06/2019
SONAIR-S2-D-MAN-006
Page : 2-4
Rev. : A
2.4
AIRSPEED INDICATOR MARKINGS
Airspeed indicator markings and their colour-code significance are shown
below
–
MARKING
KIAS
SIGNIFICANCE
White arc
45-85
Positive Flap Operating Range
•
Lower limit is V
S0
at maximum weight
•
Upper limit is the maximum speed permissible
with flaps LD setting (V
fe
)
Green arc
50-120
Normal Operating Range
•
Lower limit is V
S1
at maximum weight, most
forward CG with flaps retracted, engine idling
•
Upper limit is maximum structural cruising
speed
Yellow arc
120-135
Manoeuvres must be conducted with caution and
only in smooth air
Red line
135
Maximum speed for all operations