sonaca aircraft S201 - Airspeed Indicator Markings

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