Cpr light transport descending to 9000 ft overshot to 8700 ft because of improper altimeter setting.

Attributes
ACN	357680
Time
Date	199701
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : aco
State Reference	OH
Altitude	msl bound lower : 8700 msl bound upper : 9000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : pit
Operator	general aviation : corporate
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 91
Flight Phase	cruise other descent other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : atp pilot : cfi
Experience	flight time last 90 days : 100 flight time total : 11500 flight time type : 4000
ASRS Report	357680
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	altitude deviation : overshoot non adherence : clearance
Independent Detector	other controllera other flight crewa
Resolutory Action	controller : issued new clearance none taken : unable
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were given a clearance to descend to 9000 ft from 10000 ft. After I read back the clearance and the PF started the descent, I noticed he set the altimeter to an incorrect setting that he heard ATC give another aircraft. I brought it to his attention and the correct altimeter setting was made. At the same time approach said he showed us at 8700 ft. They said that we could continue the descent to 7000 ft.

Original NASA ASRS Text

Title: CPR LTT DSNDING TO 9000 FT OVERSHOT TO 8700 FT BECAUSE OF IMPROPER ALTIMETER SETTING.

Narrative: WE WERE GIVEN A CLRNC TO DSND TO 9000 FT FROM 10000 FT. AFTER I READ BACK THE CLRNC AND THE PF STARTED THE DSCNT, I NOTICED HE SET THE ALTIMETER TO AN INCORRECT SETTING THAT HE HEARD ATC GIVE ANOTHER ACFT. I BROUGHT IT TO HIS ATTN AND THE CORRECT ALTIMETER SETTING WAS MADE. AT THE SAME TIME APCH SAID HE SHOWED US AT 8700 FT. THEY SAID THAT WE COULD CONTINUE THE DSCNT TO 7000 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.