Altitude deviation altitude overshot.

Attributes
ACN	295489
Time
Date	199502
Day	Sat
Local Time Of Day	0001 To 0600
Place
Locale Reference	atc facility : vny
State Reference	CA
Altitude	msl bound lower : 13000 msl bound upper : 14000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : lax
Operator	common carrier : air taxi
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 135
Flight Phase	descent other
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 300 flight time total : 3300 flight time type : 100
ASRS Report	295489
Person 2
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 250 flight time total : 3100 flight time type : 200
ASRS Report	295677
Events
Anomaly	altitude deviation : overshoot non adherence : clearance
Independent Detector	other controllera
Resolutory Action	flight crew : returned to intended course or assigned course other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Approach controller said for aircraft to descend to 14000 ft. Interpreted as 4000 ft and read back by myself as 4000 ft. Control didn't disagree. Captain said he heard 4000 ft also got to 13000 ft. (1000 ft off) when controller reminded us he only cleared us to 14000 ft.

Original NASA ASRS Text

Title: ALTDEV ALT OVERSHOT.

Narrative: APCH CTLR SAID FOR ACFT TO DSND TO 14000 FT. INTERPRETED AS 4000 FT AND READ BACK BY MYSELF AS 4000 FT. CTL DIDN'T DISAGREE. CAPT SAID HE HEARD 4000 FT ALSO GOT TO 13000 FT. (1000 FT OFF) WHEN CTLR REMINDED US HE ONLY CLRED US TO 14000 FT.

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.