Serious Incident: Diamond Twin Star DA42 MNG, G-COBS & Piper PA31-350, G-FCSL 5NM east of Ireland West Airport Knock, Co. Mayo 22 April 2013: Report 2014-005

SYNOPSIS
 
While in the process of conducting separate flights for the calibration of navigation aids at EIKN, the lateral separation between two calibrating aircraft reduced to 0.42 nautical miles (NM) with no vertical separation. One aircraft initiated avoiding action following a Traffic Advisory System (TAS) warning and subsequently declared an AIRPROX. Both aircraft landed without further incident. There were no injuries.
 
A total of five Safety Recommendations have been made as a result of this Investigation.
 
 
 
Occurrence Date: 
Monday, 22 April, 2013
Report Date: 
Tuesday, 10 June, 2014
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