Flight crew understood 1-0-thousand. Controller corrected to 1-1-thousand.

Attributes
ACN	135742
Time
Date	199002
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : dtw
State Reference	MI
Altitude	msl bound lower : 10600 msl bound upper : 11000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dtw
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	cruise other descent other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : instrument pilot : cfi pilot : atp
Experience	flight time last 90 days : 100 flight time total : 9950 flight time type : 1000
ASRS Report	135742
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : atp pilot : instrument
Events
Anomaly	altitude deviation : overshoot
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

Clearance given to 'descend and maintain 1-0-thousand.' readback given: '1-0-thousand.' upon descending through 10600', ATC stated 'your assigned altitude was 1-1-thousand,' and then clearance given to 10000'.

Original NASA ASRS Text

Title: FLT CREW UNDERSTOOD 1-0-THOUSAND. CTLR CORRECTED TO 1-1-THOUSAND.

Narrative: CLRNC GIVEN TO 'DSND AND MAINTAIN 1-0-THOUSAND.' READBACK GIVEN: '1-0-THOUSAND.' UPON DSNDING THROUGH 10600', ATC STATED 'YOUR ASSIGNED ALT WAS 1-1-THOUSAND,' AND THEN CLRNC GIVEN TO 10000'.

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.