Y same altitude assigned had less than standard separation from X. System error.

Attributes
ACN	293220
Time
Date	199501
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : omn
State Reference	FL
Altitude	msl bound lower : 11000 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : dab tower : mhv
Operator	general aviation : personal
Make Model Name	Falcon 20FJF/20C/20D/20E/20F
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Route In Use	enroute : direct enroute airway : zjx
Flight Plan	IFR
Aircraft 2
Make Model Name	Challenger CL600
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller radar : 20
ASRS Report	293220
Person 2
Affiliation	government : faa
Function	controller : non radar
Qualification	controller : non radar
Events
Anomaly	conflict : airborne less severe non adherence : published procedure non adherence : required legal separation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Miss Distance	horizontal : 5000 vertical : 0
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Inter Facility Coordination Failure Operational Error

Narrative:

X departed dab nwbound, climbing. Y, C260/right, departed sgj sebound. Center approved higher altitude on X, then got handoff from jax approach on Y sebound climbing above X nwbound and advised that dab approach was taking a pointout of Y. Dab did not climb X and center d-side manual controller advised jax approach to level Y, at same altitude as nwbound X. Then jax approach descended Y back down to 11000 ft, the same altitude as X head-on, and switched sebound Y to ZJX. ZJX radar controller advised Y to climb and turn 90 degrees away from head on traffic X. Dab controller advised they were using visual separation and climbed his nwbound departure to the preapproved altitude to the center. Dab approach controller should have worked both aircraft and separated both aircraft before taking a pointout if he had traffic to avoid and separate.

Original NASA ASRS Text

Title: Y SAME ALT ASSIGNED HAD LTSS FROM X. SYS ERROR.

Narrative: X DEPARTED DAB NWBOUND, CLBING. Y, C260/R, DEPARTED SGJ SEBOUND. CTR APPROVED HIGHER ALT ON X, THEN GOT HDOF FROM JAX APCH ON Y SEBOUND CLBING ABOVE X NWBOUND AND ADVISED THAT DAB APCH WAS TAKING A POINTOUT OF Y. DAB DID NOT CLB X AND CTR D-SIDE MANUAL CTLR ADVISED JAX APCH TO LEVEL Y, AT SAME ALT AS NWBOUND X. THEN JAX APCH DSNDED Y BACK DOWN TO 11000 FT, THE SAME ALT AS X HEAD-ON, AND SWITCHED SEBOUND Y TO ZJX. ZJX RADAR CTLR ADVISED Y TO CLB AND TURN 90 DEGS AWAY FROM HEAD ON TFC X. DAB CTLR ADVISED THEY WERE USING VISUAL SEPARATION AND CLBED HIS NWBOUND DEP TO THE PREAPPROVED ALT TO THE CTR. DAB APCH CTLR SHOULD HAVE WORKED BOTH ACFT AND SEPARATED BOTH ACFT BEFORE TAKING A POINTOUT IF HE HAD TFC TO AVOID AND SEPARATE.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.