Flight crew of small transport on descent allegedly misread 11000 for 10000'.

Attributes
ACN	121004
Time
Date	198908
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : sbn
State Reference	IN
Altitude	msl bound lower : 10000 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zau tower : srq
Operator	common carrier : air taxi
Make Model Name	Small Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other descent other
Route In Use	arrival other
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 9300 flight time type : 450
ASRS Report	121004
Person 2
Affiliation	company : air taxi
Function	flight crew : first officer
Qualification	pilot : commercial
Events
Anomaly	altitude deviation : overshoot non adherence : clearance
Independent Detector	other controllera
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation other

Narrative:

Was cleared to descend from 12000 to 10000'. Read back 10000 out of 11000'. Controller claims was only cleared to 11000'. Believe that controller cleared us to 10000'. If any question at all need to ask ATC for confirmation.

Original NASA ASRS Text

Title: FLT CREW OF SMT ON DESCENT ALLEGEDLY MISREAD 11000 FOR 10000'.

Narrative: WAS CLRED TO DSND FROM 12000 TO 10000'. READ BACK 10000 OUT OF 11000'. CTLR CLAIMS WAS ONLY CLRED TO 11000'. BELIEVE THAT CTLR CLRED US TO 10000'. IF ANY QUESTION AT ALL NEED TO ASK ATC FOR CONFIRMATION.

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.