Traffic
1
st
Ed Nov 2018
IDU-450 EFIS Software Version 8.0H (Rotorcraft)
T-3
T 3.2. Traffic Display Definitions
1) Resolution Advisory (
RA
): Traffic with a dangerous closest point of
approach and generates climb or descent commands as defined by
internal TCAS-II sensor logic.
2) Traffic Advisory (
TA
): Traffic with a dangerous closest point of
approach as defined by internal traffic sensor logic.
3) Proximate Advisory (
PA
): Traffic within 6 NM and ±1200 feet from
ownship that is not a RA or TA.
4) Other Traffic (
OT
): Traffic beyond 6 NM or ±1200 feet from ownship
that is not a RA or TA.
T 3.3. Traffic Rendering Rules
Table T-3: Traffic Rendering Rules
Type Traffic
Distance
Results
TA and RA Traffic
Off-scale
Displayed with half-
symbols
No bearing
Displayed with text
OT and PA Traffic
Beyond 6 NM
Not displayed
Off-scale or no bearing
TCAS-I, TCAS-II,
TAS, or TIS-A Sensor
Within 200’ of ground
ADS-B and TIS-B
ground traffic
displayed
Table T-4: Pilot Selected OT and PA Traffic Altitude Filtering
Mode Parameter
AUTO
If aircraft VSI is less than -500FPM, traffic 2,700
and -9,900 feet of aircraft altitude displayed.
If aircraft VSI is more than +500FPM, traffic within -2,700
and +9,900 feet of aircraft altitude displayed.
Otherwise, traffic within -2,700 and +2,700 feet of aircraft
altitude displayed.
ABOVE
Traffic within -2,700 and +9,900 feet of aircraft altitude
displayed.
BELOW
Traffic 2,700 and -9,900 feet of aircraft altitude
displayed.
NORMAL
Traffic within -2,700 and +2,700 feet of aircraft altitude
displayed.
ALL
All received traffic displayed, no altitude filtering.