09/11/2018
RANS S-21 OUTBOUND
TEXT MANUAL
14-37
REQUIRED PLACARDS AND MARKINGS
AIRSPEED INDICATOR MARKINGS
Airspeed indicator markings and their color code meanings are shown in
Table 14F-1
.
All speeds are given for maximum takeoff weight.
Speed are given in MPH and (KNOTS)
Marking
IAS Value
or Range
Meaning
White Arc
38 – 110
(33 - 96)
Full Flap Operating Range - Lower limit is
maximum weight stalling speed in landing
configuration. Upper limit is maximum speed
permissible with flaps extended.
Green
Arc
47 – 125
(41 – 110)
Normal Operating Range - Lower limit is
maximum weight VS at most forward CG with
flaps retracted. Upper limit is maximum structural
cruising speed.
Yellow
Arc
125 – 160
(109 – 139)
Operation must be conducted with caution and in
smooth air only.
Red Line
160
(139)
Maximum speed for all operations
Table 14F-1. Airspeed Indicator Markings