Commuter aircraft descends to 10000'. Center intended 11000'.

Attributes
ACN	121037
Time
Date	198908
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : phx
State Reference	AZ
Altitude	msl bound lower : 10000 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zab
Operator	general aviation : corporate
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	descent other
Route In Use	arrival star : star
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 100 flight time total : 3800
ASRS Report	121037
Person 2
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 6800
ASRS Report	120477
Events
Anomaly	altitude deviation : overshoot
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Ambiguous
Air Traffic Incident	other

Narrative:

Both pilots heard descend to 10000'. I read back 10000', we leveled at 10000' and 3 mins later center said we were supposed to stop at 11000'. Well, we told him we read back 10000', hence this report.

Original NASA ASRS Text

Title: COMMUTER ACFT DESCENDS TO 10000'. CENTER INTENDED 11000'.

Narrative: BOTH PLTS HEARD DSND TO 10000'. I READ BACK 10000', WE LEVELED AT 10000' AND 3 MINS LATER CENTER SAID WE WERE SUPPOSED TO STOP AT 11000'. WELL, WE TOLD HIM WE READ BACK 10000', HENCE THIS RPT.

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.