Pilot deviation operational error.

Attributes
ACN	288913
Time
Date	199411
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : rdu
State Reference	NC
Altitude	msl bound lower : 21000 msl bound upper : 22000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdc
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	other : unknown
Flight Phase	cruise other descent other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar pilot : private
Experience	controller non radar : 2 controller radar : 24 flight time total : 500
ASRS Report	288913
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance non adherence : required legal separation
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact none taken : insufficient time
Consequence	Other
Miss Distance	horizontal : 9000 vertical : 700
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Operational Error Pilot Deviation

Narrative:

Air carrier X -- routed roa, aldan, rdu at FL210 (gso inbound) uga Y was rted gve, gso at FL220 -- uga Y requested lower and, said unable and called the FL210 traffic to him. I descended air carrier X from FL210 to FL200. Uga Y evidently took the clearance and, I didn't realize it until uga Y reported that he was out of FL220 for FL200 my response was negative, negative maintain FL220 at which time uga Y returned to FL220.

Original NASA ASRS Text

Title: PLTDEV OPERROR.

Narrative: ACR X -- ROUTED ROA, ALDAN, RDU AT FL210 (GSO INBOUND) UGA Y WAS RTED GVE, GSO AT FL220 -- UGA Y REQUESTED LOWER AND, SAID UNABLE AND CALLED THE FL210 TFC TO HIM. I DSNDED ACR X FROM FL210 TO FL200. UGA Y EVIDENTLY TOOK THE CLRNC AND, I DIDN'T REALIZE IT UNTIL UGA Y RPTED THAT HE WAS OUT OF FL220 FOR FL200 MY RESPONSE WAS NEGATIVE, NEGATIVE MAINTAIN FL220 AT WHICH TIME UGA Y RETURNED TO FL220.

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.