Potential conflict less than standard separation between opposite direction descending traffic.

Attributes
ACN	191434
Time
Date	199110
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : atl
State Reference	GA
Altitude	msl bound lower : 8000 msl bound upper : 8300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : pbi
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	descent other
Route In Use	arrival other arrival star : star enroute airway : atl
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft
Flight Phase	cruise other
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : flight engineer pilot : instrument pilot : commercial
Experience	flight time last 90 days : 240 flight time total : 3000 flight time type : 900
ASRS Report	191434
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : far
Independent Detector	aircraft equipment other aircraft equipment : unspecified other controllera
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Miss Distance	horizontal : 6000 vertical : 200
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation
Situations
ATC Facility	procedure or policy : unspecified

Narrative:

On senca 9 arrival into atl cleared to 8000 ft. Airspeed was 250 KTS. Approach controller called out traffic 12 O'clock, 3 NM, 8500 ft. TCASII alert 'monitor vertical speed'. Visual on light aircraft while descending through 8300'. Passed within 1 NM and 200 ft of aircraft. TCASII worked as advertised.

Original NASA ASRS Text

Title: POTENTIAL CONFLICT LTSS BTWN OPPOSITE DIRECTION DSNDING TFC.

Narrative: ON SENCA 9 ARR INTO ATL CLRED TO 8000 FT. AIRSPD WAS 250 KTS. APCH CTLR CALLED OUT TFC 12 O'CLOCK, 3 NM, 8500 FT. TCASII ALERT 'MONITOR VERT SPD'. VISUAL ON LIGHT ACFT WHILE DSNDING THROUGH 8300'. PASSED WITHIN 1 NM AND 200 FT OF ACFT. TCASII WORKED AS ADVERTISED.

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.