A320 / A321, vicinity Barcelona Spain, 2016

Summary: 

On 25 July 2016, an Airbus A320 and an Airbus A321 both departing Barcelona and following their ATC instructions came into conflict and the collision risk was removed by the TCAS RA CLIMB response of the A320. Minimum separation was 1.2 nm laterally and 200 feet vertically with visual acquisition of the other traffic by both aircraft. The Investigation found that the controller involved had become preoccupied with an inbound traffic de-confliction task elsewhere in their sector and, after overlooking the likely effect of the different rates of climb of the aircraft, had not regarded monitoring their separation as necessary.

Event Details
When: 
25/07/2016
Event Type: 
Day/Night: 
Day
Flight Conditions: 
VMC

19784

Flight Details
Aircraft: 
Operator: 
Type of Flight: 
Public Transport (Passenger)
Intended Destination: 
Take-off Commenced: 
Yes
Flight Airborne: 
Yes
Flight Completed: 
Yes
Phase of Flight: 
Climb

19785

Flight Details
Aircraft: 
Type of Flight: 
Public Transport (Passenger)
Intended Destination: 
Take-off Commenced: 
Yes
Flight Airborne: 
Yes
Flight Completed: 
Yes
Phase of Flight: 
Climb
Location
Location - Airport
Airport: 
General
Tag(s): 
Event reporting non compliant, Copilot less than 500 hours on Type, CVR overwritten
HF
Tag(s): 
ATC clearance error
LOS
Tag(s): 
Required Separation not maintained, ATC Error
Outcome
Damage or injury: 
No
Non-aircraft damage: 
No
Non-occupant Casualties: 
No
Number of Non-occupant Fatalities: 
0
Number of Occupant Fatalities: 
0
Off Airport Landing: 
No
Ditching: 
No
Causal Factor Group(s)
Group(s): 
Air Traffic Management
Safety Recommendation(s)
Group(s): 
Air Traffic Management
Investigation Type
Type: 
Independent

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