18.11.2012 Views

Minimum Aviation System Performance Standards for Aircraft ...

Minimum Aviation System Performance Standards for Aircraft ...

Minimum Aviation System Performance Standards for Aircraft ...

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

4 ADS-B IN <strong>System</strong> Applications Requirements<br />

4.1 Enhanced Visual Acquisition (EVACQ) / ATSA-AIRB (Eric Vallauri)<br />

© 20xx, RTCA, Inc.<br />

(Eric Vallauri)<br />

4.2 Enhanced Visual Approach (EVAPP) / ATSA-VSA (Eric Vallauri)<br />

(Eric Vallauri)<br />

4.3 ATSA-SURF (Eric Vallauri)<br />

(Eric Vallauri)<br />

4.4 In Trail Procedures (ITP)<br />

The objective of the In-Trail Procedure (ITP) is to enable aircraft that desire flight level<br />

changes in procedural airspace to achieve these changes on a more frequent basis, thus<br />

improving flight efficiency and safety. The ITP achieves this objective by permitting a<br />

climb-through or descend-through maneuver between properly equipped aircraft, using a<br />

new distance-based longitudinal separation minimum during the maneuver. The ITP<br />

requires the flight crew to use in<strong>for</strong>mation derived on the aircraft to determine if the<br />

initiation criteria required <strong>for</strong> an ITP are met. The initiation criteria are designed such<br />

that the spacing between the estimated positions of own ship and surrounding aircraft is<br />

no closer than an approved distance throughout the maneuver. ITP requires specific<br />

application-unique processing and display parameters. Refer to RTCA DO-312<br />

[EUROCAE ED-159] <strong>for</strong> a complete ITP description.<br />

4.5 Interval Management<br />

4.5.1 FIM<br />

Airborne Spacing - Flight Deck Interval Management (ASPA-FIM) (as defined in RTCA<br />

DO-328) describes a set of airborne (i.e., flight deck) capabilities designed to support a<br />

range of Interval Management (IM) Operations whose goal is precise inter-aircraft<br />

spacing. IM is defined as the overall system that enables the improved means <strong>for</strong><br />

managing traffic flows and aircraft spacing. This includes both the use of ground and<br />

airborne tools, where ground tools assist the controller in evaluating the traffic picture<br />

and determining appropriate clearances to merge and space aircraft efficiently and safely,<br />

and airborne tools allow the flight crew to con<strong>for</strong>m to the IM Clearance.<br />

IM requires a controller using IM to provide an IM Clearance. While some IM<br />

Clearances will keep the IM <strong>Aircraft</strong> on its current route and result only in speed<br />

management, other clearances may include a turn <strong>for</strong> path lengthening or shortening.<br />

The objective of the IM Clearance is <strong>for</strong> the IM <strong>Aircraft</strong> to achieve and/or maintain an<br />

Assigned Spacing Goal relative to a Target <strong>Aircraft</strong>. The key addition to current

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!