ATC cleared widebody transport through occupied altitude.

Attributes
ACN	99627
Time
Date	198812
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : atl
State Reference	GA
Altitude	msl bound lower : 9500 msl bound upper : 9500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : atl
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 3 Turbojet Eng
Navigation In Use	Other
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 210 flight time total : 6100 flight time type : 250
ASRS Report	99627
Person 2
Affiliation	government : faa
Function	controller : departure
Qualification	controller : radar
Events
Anomaly	other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	controller : issued new clearance
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Deviation

Narrative:

Departure control cleared aircraft to 14000' and to turn right to a heading of 360 degrees. As the aircraft approached inbound aircraft corridor, ATC advised we had traffic at 10 O'clock, 4 mi at 11000'. He then realized his error and reclred us to 10000'. We were at 9500' MSL at that time. We received clearance to 10000' and easily made the transition. Controller apologized and said he thought we were on a wbound departure instead of a north departure. We saw the other aircraft and were never close.

Original NASA ASRS Text

Title: ATC CLEARED WDB THROUGH OCCUPIED ALT.

Narrative: DEP CTL CLRED ACFT TO 14000' AND TO TURN R TO A HDG OF 360 DEGS. AS THE ACFT APCHED INBND ACFT CORRIDOR, ATC ADVISED WE HAD TFC AT 10 O'CLOCK, 4 MI AT 11000'. HE THEN REALIZED HIS ERROR AND RECLRED US TO 10000'. WE WERE AT 9500' MSL AT THAT TIME. WE RECEIVED CLRNC TO 10000' AND EASILY MADE THE TRANSITION. CTLR APOLOGIZED AND SAID HE THOUGHT WE WERE ON A WBOUND DEP INSTEAD OF A N DEP. WE SAW THE OTHER ACFT AND WERE NEVER CLOSE.

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.