SCENARIO SYSTEM DESCRIPTION THE FIVE FUNDAMENTALS OF SAFETY RISK MANAGEMENT — SUMMARY .1

5-APP 2-1 Appendix 2 to Chapter 5 CONVERGING RUNWAY OPERATIONS

1. SCENARIO

1.1 An air traffic service provider has received feedback from airport users expressing safety concerns regarding converging runway operations at XYZ International Airport. XYZ International Airport consists of three runways, 08L26R, 08R26L, and 1230 see Figure 5-App 2-1. Converging runway operations are occasionally conducted on runways 26R and 12. The air traffic service provider has requested its safety manager to re-evaluate the safety of the converging runway operations procedures for runways 26R and 12 at XYZ International Airport in light of the concerns expressed by users. 1.2 The Safety Action Group SAG is requested to assist the ATS service provider’s safety manager in re- evaluating the safety of converging runway operations procedures at XYZ International Airport. The SAG includes representatives from the ATS service provider, airlines operating into XYZ International Airport and their airline pilot’s association, airport representatives as well as representatives from the State’s oversight authority. The generic safety concern is the converging flight paths for aircraft departing and arriving into XYZ International Airport. The SAG applies a safety risk management process to re-evaluate the safety of the converging runway operations. Figure 5-App 2-1. XYZ International Airport 5-APP 2-2 Safety Management Manual SMM

2. SYSTEM DESCRIPTION

One of the first tasks of the SAG is to describe the system in which operations are being carried out, as follows: a XYZ International Airport has three main runways and a small secondary runway service. b The airport has about 325 000 movements per year. c Runway 26L-08R is 11 000 feet long and is used for west and east departures and west and east arrivals. Runway 12-30 is 7300 feet long. Runway 12 is used mostly for arrivals. Runway 30 is used sometimes for departures and is seldom used for arrivals. Runway 12 physically crosses runways 08R-26L and is considered to be an “intersecting” runway. Runway 08L-26R is 9 940 feet long and is used primarily for arriving traffic and occasionally for departing traffic. Runway 08L is used only for arrivals because departure procedures have not yet been established. d Markings, signage and lighting on the airport meet the standards of both the oversight authorities and ICAO. e There are two control frequencies used for tower control. One frequency covers the south runway 26L-08R and the west runway 12-30. The second frequency covers the north runway 26R-08L. f The south runways 26L-08R have converging runway approaches published to avoid conflict with traffic on runway 12. There are no converging approaches published for the north runways 26R-08L, as technically, they are not considered intersecting since they do not physically intersect. While Runway 12 has an ILS approach, it is generally a VFR runway with the majority of landings made from visual approaches. g Runway 12 traffic information is currently passed to traffic on runway 08R-26L because the runways are considered intersecting. Traffic on both runways is controlled on the same frequency. However, because runways 08L-26R and 12 do not physically intersect, traffic on these runways is controlled on different frequencies. As a result, traffic information is not shared. h While IFR traffic separation is provided to IFR traffic on runway 26R, airport control service is provided to VFR and visual approaches to aircraft on runway 12. However, air traffic controllers will act immediately to resolve any known traffic conflicts. Standard procedure is to give traffic on runways 26R-08L priority and divert traffic on runway 12.

3. HAZARD IDENTIFICATION PROCESS