Baron 58P altitude clearance dispute near cew.

Attributes
ACN	458110
Time
Date	199912
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : cew.airport
State Reference	FL
Altitude	msl bound lower : 10000 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zjx.artcc tower : msp.tower
Operator	general aviation : corporate
Make Model Name	Baron 58/58TC
Operating Under FAR Part	Part 91
Flight Phase	cruise : enroute altitude change
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : single pilot
Qualification	pilot : atp
Experience	flight time last 90 days : 10 flight time total : 16876 flight time type : 10
ASRS Report	458110
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance non adherence : far
Independent Detector	other controllera other flight crewa
Resolutory Action	controller : issued advisory controller : issued new clearance none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	Ambiguous

Narrative:

Read back and descended to 10000 ft. ATC said I was cleared to 11000 ft, but to remain at 10000 ft on course.

Original NASA ASRS Text

Title: BARON 58P ALT CLRNC DISPUTE NEAR CEW.

Narrative: READ BACK AND DSNDED TO 10000 FT. ATC SAID I WAS CLRED TO 11000 FT, BUT TO REMAIN AT 10000 FT ON COURSE.

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.