Event Details

Title:Proximity incident, Infraction of minimum separation between the aircraft SE-IBX and TS-INC in the airspace north of Gothenburg/Landvetter airport, O County, Sweden, on the 5th of November 2002
Micro summary:Following a miscommunication with ATC, a trainer came in close proximity to an airliner.
Event Time:2002-11-05 at 1820 UTC
File Name:2002-11-05-SE.pdf
Publishing Agency:Swedish Accident Investigation Board (AIB)
Publishing Country:Sweden
Report number:RL 2003:31e
Site of event:20 nm north of Gothenburg/Landvetter airport, Sweden
Latitude/Longitude:5749N 0122E
First AirplaneSecond Airplane
Departure:Hagshult Airport, SwedenUnknown
Destination:Gothenburg City Airport (Säve), Gothenburg, SwedenGöteborg/Landvetter Airport, O county, Sweden
Airplane Type(s):Cessna 172Airbus A320
Flight Phase:CruiseApproach
Operator(s):Varnamo AeroclubNouvelair
Type of flight:TrainingRevenue
Serious Injuries:00
Other Injuries:00
Executive Summary:The student pilot and his instructor were to perform a night navigation flight in aircraft SE-IBX. They had prepared for the flight by completing an operational flight plan and had filed the flight plan with ATS. The flight was to depart from Hagshult airport and proceed to Gothenburg/Säve airport via the HAR VOR station. They took-off from Hagshult at 18:30 hours. As they approached the community of Länghem, approximately 10 NM southwest of Borås, the pilots contacted Gothenburg Control and reported their position, altitude, flight according to VFR flightplan and transponder code. The air traffic controller answered with a confirmation of their transmission and reported the actual QNH at Landvetter. Thereafter the pilots continued the flight at an altitude of 3,000 feet in the direction of HAR.

After passage of the HAR VOR, the pilots continued the flight on a course of 259 degrees towards Gothenburg/Säve airport. As the aircraft entered the area immediately northwest of the Landvetter control zone, still maintaining 3,000 feet, both pilots on board observed an aircraft obliquely to the right of them. They were not able to determine the altitude or the distance of the aircraft but saw that it was in a right-hand turn towards them. Simultaneously they heard on the radio that a pilot (the pilot on board aircraft TS-INC) had contacted Gothenburg Control and reported that he had received a TCAS warning and had initiated a climb. The pilot in SE-IBX then reduced power and initiated a descent to an altitude of 2,500 feet.

Subsequent to the missed approach, aircraft TS-INC performed a new approach to runway 21 with radar vectoring and landed without problems.

The investigation has shown that SE-IBX flew into Gothenburg/- Landvetter’s terminal area without clearance. The air traffic controller did not notice the encroachment. This was due to, among other things, the fact that the radar presentation of other controlled and uncontrolled traffic in the area took place with the function ”OTH OFF”, in other words without labels, and that he had not programmed the SE-IBX flight into the radar system. The closest the two aircraft came to each other was 117 meters horizontally and approximately 300 meters vertically.

A misunderstanding between the air traffic controller and the pilot in SE-IBX caused the incident. Contributory to the incident has been deficiencies in air traffic control routines.
Learning Keywords:Operations - Airspace - Air Proximity
Operations - Airspace - Air Traffic Control
Operations - Airspace - TCAS


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