Large transport flight crew has clearance confusion to descend to 10000 ft. Controller says clearance was for 12000 ft. Altitude deviation. Clearance interpretation.

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Attributes
ACN	338800
Time
Date	199606
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : cvg
State Reference	OH
Altitude	msl bound lower : 11200 msl bound upper : 12000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : cvg
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	descent other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 190 flight time total : 19000 flight time type : 10000
ASRS Report	338800
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	altitude deviation : overshoot non adherence : clearance
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Air Traffic Incident	Pilot Deviation

Narrative:

Arriving in the cvg area, all 3 cockpit crew members heard a clearance to cross henna (cvg 055 degrees/43) at 10000 ft and 250 KTS. While descending through 11200 ft the controller indicated he cleared us to cross henna at 12000 ft but to maintain 11000 ft now. We suggest the controller was wrong, but this report is being submitted just in case we were wrong. There was no traffic conflict.

Original NASA ASRS Text

Title: LGT FLC HAS CLRNC CONFUSION TO DSND TO 10000 FT. CTLR SAYS CLRNC WAS FOR 12000 FT. ALTDEV. CLRNC INTERP.

Narrative: ARRIVING IN THE CVG AREA, ALL 3 COCKPIT CREW MEMBERS HEARD A CLRNC TO CROSS HENNA (CVG 055 DEGS/43) AT 10000 FT AND 250 KTS. WHILE DSNDING THROUGH 11200 FT THE CTLR INDICATED HE CLRED US TO CROSS HENNA AT 12000 FT BUT TO MAINTAIN 11000 FT NOW. WE SUGGEST THE CTLR WAS WRONG, BUT THIS RPT IS BEING SUBMITTED JUST IN CASE WE WERE WRONG. THERE WAS NO TFC CONFLICT.

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.