Minimum Aviation System Performance Standards for Aircraft ...

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possibility of runway incursions and collisions. Refer to RTCA DO-322/EUROCAE
ED-165 for a description of the SURF application.
1.3.1.5 Oceanic In-Trail Procedures (ITP)
In-Trail Procedures (ITP) in Oceanic Air Space enables aircraft that desire flight level
changes in procedural airspace to achieve these changes on a more frequent basis, thus
improving flight efficiency and safety. The ITP achieves this objective by permitting a
climb-through or descend-through maneuver between properly equipped aircraft, using a
new distance-based longitudinal separation minimum during the maneuver. The ITP
requires the flight crew to use information derived on the aircraft to determine if the
initiation criteria required for an ITP are met. Refer to RTCA DO-312/EUROCAE ED-
159 for a complete ITP description.
1.3.2 Emerging Applications
This document specifies detailed requirements for an initial set of applications.
1.3.2.1 Airport Surface Situational Awareness with Indications and Alerts (SURF IA)
Airport Surface Situational Awareness with Indications and Alerts (SURF IA) is a flightdeck
based application that adds to the Airport Traffic Situation Awareness application
by graphically highlighting traffic or runways on the airport map to inform flight crew of
detected conditions which may require their attention. For detected non-normal – alert
level – situations, which require immediate flight crew awareness, additional attention
getting cues are provided. Refer to RTCA DO-323 for a more complete description of
SURF IA.
1.3.2.2 Traffic Situational Awareness with Alerts (TSAA)
Traffic Situational Awareness with Alerts (TSAA) will provide traffic advisories in the
near term by using the CDTI and alerts to assist the pilot or flight crew with visual
acquisition and avoidance of traffic in both Visual Meteorological Conditions and
Instrument Meteorological Conditions. The application is applicable under both Visual
Flight Rules (VFR) and Instrument Flight Rules (IFR). It builds on the Basic Traffic
Situational Awareness application by providing the pilot or flight crew with alerts for
conflicting traffic that may or may not have been pointed out by ATC. This alert is for
detected airborne conflicts.
1.3.2.3 Flight-Deck Based Interval Management-Spacing (FIM-S)
Flight-Deck Based Interval Management-Spacing (FIM-S) is a suite of functional
capabilities that can be combined to produce operational applications to achieve or
maintain an interval or spacing from a target aircraft. ATC will be provided with a new
set of (voice or datalink) instructions directing, for example, that the flight crew establish
and maintain a given time from a reference aircraft.
1.4 System Scope and Definition of Terms
© 20xx, RTCA, Inc.
The ASA system scope is all of the elements depicted in Figure 1-1. It should be noted
that the transmit function shown in Figure 1-1 can be implemented in either the airborne
segment (ADS-B Out) or in a ground segment, as for the TIS-B or ADS-R functions.