GLF5 / A319, south-eastern France, 2004

Summary: 

On 16 September 2004, a loss of separation occurred over Geneva between Air France A319 and a Gulfstream 5 which commenced descent without clearance by ATC and with coordinated TCAS RAs not followed by either aircraft.

Event Details
When: 
16/09/2004
Event Type: 
Day/Night: 
Night
Flight Conditions: 
VMC

18846

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

18847

Flight Details
Operator: 
Type of Flight: 
Private
Flight Origin: 
Take-off Commenced: 
Yes
Flight Airborne: 
Yes
Flight Completed: 
Yes
Phase of Flight: 
Descent
Location
Approx.: 
near La Tour-du-Pin, France
HF
Tag(s): 
Ineffective Monitoring, Procedural non compliance, Inappropriate crew response - skills deficiency
LB
Tag(s): 
Accepted ATC Clearance not followed, TCAS RA response
LOS
Tag(s): 
TCAS RA Mis Flown, Accepted ATC Clearance not followed, Required Separation not maintained, Level Bust
Outcome
Damage or injury: 
No
Aircraft damage: 
None
Non-aircraft damage: 
No
Non-occupant Casualties: 
No
Occupant Injuries: 
None
Occupant Fatalities: 
None
Off Airport Landing: 
No
Ditching: 
No
Causal Factor Group(s)
Group(s): 
Aircraft Operation
Safety Recommendation(s)
Group(s): 
None Made
Investigation Type
Type: 
Independent

Description

On 16 September 2004, a loss of separation occurred over Geneva between Air France AIRBUS A-319 and a Gulfstream 5 which commenced descent without clearance by ATC and with coordinated Airborne Collision Avoidance System (ACAS) RAs not followed by either aircraft.

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