<< >> NASA ASRS Report 104088, February 1989

Large transport inadvertently assigned wrong altitude during climb out resulting in less than standard separation with an arrival medium large transport.

Attributes
ACN	104088
Time
Date	198902
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : atl
State Reference	GA
Altitude	msl bound lower : 10000 msl bound upper : 10000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : atl
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : takeoff cruise other
Route In Use	departure other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Route In Use	arrival other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : handoff position
Qualification	controller : radar
Experience	controller radar : 19
ASRS Report	104088
Person 2
Affiliation	government : faa
Function	controller : departure
Qualification	controller : radar
Events
Anomaly	conflict : airborne less severe non adherence : published procedure non adherence : required legal separation other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	faa : investigated
Miss Distance	horizontal : 12000 vertical : 0
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Aircraft was inadvertently issued wrong altitude. The reporter confirmed that a loss of sep occurred and that he was working the handoff position. The reporter was talking to the ARTCC and had no involvement in the error. He said the radar controller inadvertently cleared a departure large transport to 10000' instead of 11000', resulting in a confliction with an arrival medium large transport. The reporter does not recall how close the aircraft got, nor what the WX conditions were. He has 19 yrs as fpl.

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Original NASA ASRS Text

Title: LGT INADVERTENTLY ASSIGNED WRONG ALT DURING CLIMB OUT RESULTING IN LESS THAN STANDARD SEPARATION WITH AN ARR MLG.

Narrative: ACFT WAS INADVERTENTLY ISSUED WRONG ALT. THE RPTR CONFIRMED THAT A LOSS OF SEP OCCURRED AND THAT HE WAS WORKING THE HDOF POS. THE RPTR WAS TALKING TO THE ARTCC AND HAD NO INVOLVEMENT IN THE ERROR. HE SAID THE RADAR CTLR INADVERTENTLY CLRED A DEP LGT TO 10000' INSTEAD OF 11000', RESULTING IN A CONFLICTION WITH AN ARR MLG. THE RPTR DOES NOT RECALL HOW CLOSE THE ACFT GOT, NOR WHAT THE WX CONDITIONS WERE. HE HAS 19 YRS AS FPL.

Data retrieved from NASA's ASRS site as of August 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.