Flight Operations |

TCAS and ACAS Procedures

34TH ANNUAL CONFERENCE, Jerusalem, Israel, 27-31 March 1995 WP No. 88 TCAS and ACAS Procedures Introduction This working paper will outline 3 additions to the current policy statement, as well as a revision to an existing policy statement, their necessity … Continued

Three Main Systems of Flight Level (FL) Determination

35TH ANNUAL CONFERENCE, Tunis, Tunisia, 15-19 April 1996 WP No. 96 Three Main Systems of Flight Level (FL) Determination There exists at present three main systems of flight level (FL) determination. The FL expressed in feet , mainly used … Continued

Removal of Ground Based Aids

38TH ANNUAL CONFERENCE, Santiago, Chile, 15-19 March 1999 WP No. 98 Removal of Ground Based Aids Introduction ICAO is proceeding with the definition of global navigation satellite systems (GNSS). The implementation of GNSS may allow the removal of certain ground … Continued

Monitor the Developments in the Operational use of ASAS

42ND ANNUAL CONFERENCE, Buenos Aires, Argentina, 17-21 March 2003 WP No. 93 Monitor the Developments in the Operational use of ASAS Presented by SC1 Introduction 1.1 WP 78 presented in Committee B at IFATCA’s 41st Annual Conference, Report of Separation … Continued

Review Policy on ACAS Phraseology

47TH ANNUAL CONFERENCE, Arusha, Tanzania, 10-14 March 2008 WP No. 95 Review Policy on ACAS Phraseology Presented by TOC Summary On 22nd November 2007, Amendment 5 of ICAO Doc 4444 Air Traffic Management was included. One of the changes with … Continued

Study Visual Separation on Approach

51ST ANNUAL CONFERENCE, Kathmandu, Nepal, 12-16 March 2012 WP No. 91 Study Visual Separation on Approach Presented by TOC Summary After a presentation on Airborne Separation Assistance System (ASAS) during the annual IFATCA Conference in Amman in 2011, it was … Continued

Radio Mandatory Zones / Transponder Mandatory Zones

59TH ANNUAL CONFERENCE, Singapore, 30 March – 3 April 2020 WP No. 88 Radio Mandatory Zones / Transponder Mandatory Zones Presented by TOC IMPORTANT NOTE: The IFATCA Annual Conference 2020 in Singapore was cancelled. The present working paper was … Continued

COM 4.11 RADIO MANDATORY ZONES / TRANSPONDER MANDATORY ZONES

Traffic density is constantly increasing and due to specific airspace classification, controlled IFR traffic can be mixed up with uncontrolled VFR traffic. With the intention to improve safety, additional SSR transponder and radio equipment carriage requirements have been implemented. This … Continued

AAS 1.11 “FLY-BY” AND “FLY-OVER” WAYPOINTS

The concept of “fly-by” and “flyover” waypoints is integral to RNAV and as such has been in existence for quite some time. As Performance Based Navigation is being increasingly used to reduce the distances between routes to a minimum, air … Continued

ATS 3.36 EMERGENCY DESCENT PROCEDURES

Existing ICAO recommended practices concerning emergency descent procedures provide guidance to pilots and ATS units in the event of an emergency descent. However, these provisions are outdated. Updates are needed to handle modern scenarios. Proposal was to switch TCAS to … Continued