<< >> NASA ASRS Report 465260, December 1999

Radar approach controller at chs allowed a departing aircraft climbing to 4000 ft to conflict with an en route aircraft at 4000 ft.

Attributes
ACN	465260
Time
Date	199912
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : chs.airport
State Reference	SC
Altitude	msl single value : 4000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : chs.tracon
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : chs.tracon
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : departure controller : approach
Qualification	controller : radar
Experience	controller military : 3 controller radar : 8 controller time certified in position1 : 7
ASRS Report	465260
Person 2
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : private pilot : instrument
Events
Independent Detector	atc equipment : conflict alert other controllera
Resolutory Action	controller : issued new clearance flight crew : took evasive action
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Aircraft X northwest off chs to ceu at 4000 ft. Aircraft Y overflt at 4000 ft southwest to sav. 15 mi northwest chs, conflict alert activated. Called traffic, turned aircraft Y to 180 degrees and descended aircraft X to 3000 ft. Aircraft Y reported traffic in sight. Both aircraft 4000 ft and 1 mi. I was working approximately 15 aircraft at this time, one of which pilot spoke broken english and was not responding to my calls. I diverted my attention to concentrate on getting an acknowledgement from foreign pilot when incident occurred.

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Original NASA ASRS Text

Title: RADAR APCH CTLR AT CHS ALLOWED A DEPARTING ACFT CLBING TO 4000 FT TO CONFLICT WITH AN ENRTE ACFT AT 4000 FT.

Narrative: ACFT X NW OFF CHS TO CEU AT 4000 FT. ACFT Y OVERFLT AT 4000 FT SW TO SAV. 15 MI NW CHS, CONFLICT ALERT ACTIVATED. CALLED TFC, TURNED ACFT Y TO 180 DEGS AND DSNDED ACFT X TO 3000 FT. ACFT Y RPTED TFC IN SIGHT. BOTH ACFT 4000 FT AND 1 MI. I WAS WORKING APPROX 15 ACFT AT THIS TIME, ONE OF WHICH PLT SPOKE BROKEN ENGLISH AND WAS NOT RESPONDING TO MY CALLS. I DIVERTED MY ATTN TO CONCENTRATE ON GETTING AN ACKNOWLEDGEMENT FROM FOREIGN PLT WHEN INCIDENT OCCURRED.

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.