Altitude deviation. Overshoot in descent. Wrong altimeter setting.

Attributes
ACN	129829
Time
Date	198912
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : jvl
State Reference	WI
Altitude	msl bound lower : 9400 msl bound upper : 10000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : ord tower : mdw
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	descent other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : flight engineer pilot : commercial pilot : cfi pilot : atp pilot : instrument
Experience	flight time last 90 days : 200 flight time total : 8000 flight time type : 1000
ASRS Report	129829
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
ASRS Report	130367
Events
Anomaly	altitude deviation : overshoot other anomaly other
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:

First officer copied ord ATIS and laid it on forward console. Temperature/dew pt was 30/23. Captain read it as altimeter setting, which was really 29.67. 30.23 was set in both altimeters, and as we leveled off at 10000', approach inquired as to airspeed and our altitude. Mode C was indicating 9400' (approximately). We checked altimeter setting with what he gave us and realized the error. Corrections were made and flight terminated west/O event. I believe the ATIS form should be changed to be more definitive at night.

Original NASA ASRS Text

Title: ALT DEVIATION. OVERSHOOT IN DESCENT. WRONG ALTIMETER SETTING.

Narrative: F/O COPIED ORD ATIS AND LAID IT ON FORWARD CONSOLE. TEMP/DEW PT WAS 30/23. CAPT READ IT AS ALTIMETER SETTING, WHICH WAS REALLY 29.67. 30.23 WAS SET IN BOTH ALTIMETERS, AND AS WE LEVELED OFF AT 10000', APCH INQUIRED AS TO AIRSPD AND OUR ALT. MODE C WAS INDICATING 9400' (APPROX). WE CHKED ALTIMETER SETTING WITH WHAT HE GAVE US AND REALIZED THE ERROR. CORRECTIONS WERE MADE AND FLT TERMINATED W/O EVENT. I BELIEVE THE ATIS FORM SHOULD BE CHANGED TO BE MORE DEFINITIVE AT NIGHT.

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.