A single engine pilot was cleared to FL230 from FL250 and during descent traffic was called out whic...

Attributes
ACN	1165164
Time
Date	201404
Local Time Of Day	1201-1800
Place
Locale Reference	ZTL.ARTCC
State Reference	GA
Environment
Light	Daylight
Aircraft 1
Make Model Name	Small Aircraft Low Wing 1 Eng Retractable Gear
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Flight Plan	IFR
Person 1
Function	Captain Single Pilot
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Private
Experience	Flight Crew Last 90 Days 10 Flight Crew Total 840 Flight Crew Type 200
Events
Anomaly	ATC Issue All Types Conflict NMAC

Narrative:

Controller directed me to descend to FL230 from FL250 then switched me to another controller. I checked in with the new controller and let him know I was leaving 250 for 230. He acknowledged my check in. Then called out traffic. I looked for traffic; but could not see it until it passed under my left wing and then saw it. I informed the controller I had the traffic. I then noticed it was pretty close. As I was about to radio the controller the other pilot asked if I was descending. The controller immediately canceled my clearance and moved me back to 240. I executed his command. I do not know for sure; but the other pilot said my aircraft came within 500 ft of his.

Original NASA ASRS Text

Title: A single engine pilot was cleared to FL230 from FL250 and during descent traffic was called out which he did not see until it passed beneath him less than 500 FT. ATC recleared the pilot to FL240.

Narrative: Controller directed me to descend to FL230 from FL250 then switched me to another Controller. I checked in with the new Controller and let him know I was leaving 250 for 230. He acknowledged my check in. Then called out traffic. I looked for traffic; but could not see it until it passed under my left wing and then saw it. I informed the Controller I had the traffic. I then noticed it was pretty close. As I was about to radio the Controller the other pilot asked if I was descending. The Controller immediately canceled my clearance and moved me back to 240. I executed his command. I do not know for sure; but the other pilot said my aircraft came within 500 FT of his.

Data retrieved from NASA's ASRS site 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.

A single engine pilot was cleared to FL230 from FL250 and during descent traffic was called out which he did not see until it passed beneath him less than 500 ft. ATC recleared the pilot to FL240.