Garmin Flight Deck 100 User Manual

®

190-00728-04 Rev. A

434

A Resolution Advisory (RA) alerts the crew to intruding aircraft that are closing to within 15 to 35 seconds

of a potential collision area. RAs include vertical guidance maneuvers designed to increase or maintain vertical
separation from intruding aircraft. An RA that is beyond the selected display range is indicated by a half RA
symbol at the edge of the screen at the relative bearing of the intruder.

Refer to the TCAS II documentation for information on alerts generated by the TCAS II equipment.

When the TCAS II unit issues a TA or RA, the following occur:

• A voice alert is generated when a TA or RA is displayed.

• A ‘TRAFFIC’ annunciation appears at the top right of the airspeed indicator on the PFD, flashes for 5 seconds

and remains displayed until no TAs or RAs are detected in the area. RA ‘TRAFFIC’ annunciations are white
text with red backgrounds; TA ‘TRAFFIC’ annunciations are black text with yellow backgrounds. If a TA and
RA occur simultaneously, only the red and white RA ‘TRAFFIC’ annunciation is shown.

• The PFD Inset Map is automatically displayed with TA or RA traffic.

• During an RA only, voice alert(s) provide vertical guidance to resolve the traffic conflict while the PFD displays

pitch and vertical speed cues (Figure 6-124). Additional voice alerts occur to denote changes in the RA status.