PRIMUSr 1000 Integrated Avionics System
A28--1146--112--00
4-47
Electronic Flight Instrument System (EFIS)
WhentheFGSenterstheMAXSPEEDmode,theannunciatorMAX
SPEED is displayed in amber to the left of the ADI.
D Takeoff V
SPEED
Display --Ifthe aircraft is on the groundV
1
, V
R
, and
V
2
aredisplayedindigitaltabularforminsidethelowerportion ofthe
airspeed tape. As theairspeedtapeincreases and the valuescome
into view on the airspeed tape, the tabular display is removed and
subsequently replaced by the appropriately positioned V
SPEED
bug.
D Indicated Airspeed Comparison Monitor -- If the on--side and
cross--side calibrated airspeed differ by 5 knots or more for greater
than 2 seconds, an amber IAS is displayedvertically near the topof
the airspeed tape. When initially activiated, the display flashes for
ten seconds, then goes on steadily.
D Mach Display -- The digital Mach speed display is of the present
Mach number and is shown below the airspeed tape. The color of
the digits always agrees with the digital airspeed display. Mach
speed is displayed when the airspeed increases beyond 0.45Mand
is removed when airspeed drops below 0.40M.
D AirspeedRollingDigitDisplay--Arollingdigitdisplayoftheactual
current IAS value is contained within the display window. This data
is a magnification of the digits on the scale and theyare readable to
aone--knotresolution.The digitswithinthe pointeraregreen.When
the current airspeed value is equal to or exceeds the maximum
allowableairspeed(V
MO
)thedigitsturnred.Whentheairspeedtrend
vector exceeds V
mo
by oneknot,therollingdigitsturnamberunless
red is required.
D Low Speed Awareness (LSA) -- LSA (not shown) is indicated by
the three segment bar on the lower right side of the airspeed tape.
Thebarindicatesangleofattack(AOA)relativetoV
s
.Thereference
for the bar is the airspeed reference line. The top of each segment
is defined in table 4--16.
Segment V
S
Reference (V
SO
)
White 1.23
Amber 1.13
Red 1.0
Low Speed Awareness Color Logic
Table 4--16
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