On 12 March 2019, a Bombardier DHC8-300 which had requested and been granted a visual approach to Wellington was instructed to follow another of the operator’s DHC8 aircraft already in the circuit but instead turned in front of it after the its crew identified the Airbus A320 as the other DHC8. The conflict was detected by ATC and advised and coordinated TCAS RAs then followed. The Investigation noted that whilst the inability of the second DHC8 crew to correctly identify the aircraft they should follow had been causal, procedures had delayed the ATC response to the automatically detected conflict.