Event Details

Title:AIRPROX incident between a Cessna 650, LN-NLD, and Airbus A320, HS-IPZ, approximately 20 NM north of Oslo
Micro summary:A conflict between standard instrument departures and standard arrival procedure used by an A320 and Cessna 650, combined with a division of controller responsibilities results in a near-miss.
Event Time:2000-06-02 at 1525 UTC
File Name:2000-06-02-NO.pdf
Publishing Agency:Accident Investigation Board Norway (AIB)
Publishing Country:Norway
Report number:4/2001
Site of event:Approximately 20 nm south of Oslo Airport Gardermoen
First AirplaneSecond Airplane
Departure:Sandefjord Airport Torp, NorwayOslo Airport, Gardermoen, Norway
Destination:Oslo Airport, Gardermoen, NorwayZurich International Airport (Kloten Airport), Kloten, Switzerland
Airplane Type(s):Cessna C 650Airbus A320
Flight Phase:ApproachClimb
Type of flight:RevenueRevenue
Serious Injuries:00
Other Injuries:00
Executive Summary:Oslo Airport Gardermoen, ENGM, is located north of the city of Oslo Norway. The Terminal Control Area (TMA), is divided into 2 sectors by a line running roughly north - south through the centre of the airport. The sectors are named APPROACH SECTOR EAST and APPROACH SECTOR WEST. A separate ATC controller controls the traffic in each sector. A system of STARs (Standard Instrument Arrivals), and SIDs (Standard Instrument Departures), has been established to orderly regulate the arriving and departing traffic (see Appendix 1).

NOO 03 was operating a domestic flight from Sandefjord Airport Torp, ENTO, to ENGM. The aircraft was under the control of Oslo APP, TMA EAST on freq. 119.65 MHz, cleared to fly STAR TOR 2F and at the time of the incident maintaining FL 100. The aircraft was flown in accordance with clearance.

SWR 417 was operating an international flight from ENGM to Zurich Airport, LSZH. The fly SID SKI 2C but also cleared to deviate from track to avoid CB (Cumulonimbus). At the time of the incident SWR 417 was in a right turn leaving FL 100 for FL 190. The aircraft was flown in accordance with the controllerís instructions.

The weather in the area at the time of the incident included moderate to heavy CB activity, requiring considerable deviation from published SIDs in order to avoid CBs.

At time 1525:17 SWR 417 reported a TCAS Warning to TMA WEST indicating a lateral distance of 2 NM to the other aircraft and at almost same flight level. The commander of SWR 417 indicated that a formal report would be submitted.

The commander of NOO 03 was later informed about the incident by CAA and asked to submit a report.

The incident was investigated by OSLO ATCC and a report submitted to AAIB/N.

The STAR TOR 2F and SID SKI 2C are located in different sectors of OSLO TMA. The STAR and the SID are located close to the common border between the two sectors.

A separate controller in each sector, utilising a separate radio frequency provides air Traffic Control.

A system for provision of altitude separation between aircraft on STAR TOR 2F and SID SKI 2C is in force in DEP AREA 19R. The local Oslo ATCC regulation, part 3, chap. 2 and part 3, chap. 3 contains the maximum and minimum altitudes to be maintained by north- and south bound traffic until clear of DEP AREA 19R.

The incident took place approximately 10 NM south of DEP AREA 19R.

Learning Keywords:Operations - Airspace - Air Proximity
Operations - Airspace - Air Traffic Control
Operations - Airspace - TCAS
Operations - Charting/Databases
Other - Workplace Culture or Management


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