A G-4 flight crew overshoots assigned altitude.

Attributes
ACN	521850
Time
Date	200108
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : apa.airport
State Reference	CO
Altitude	msl bound lower : 8000 msl bound upper : 8700
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : tvc.tower
Operator	general aviation : corporate
Make Model Name	Gulfstream IV
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : commercial pilot : cfi pilot : atp pilot : multi engine
Experience	flight time last 90 days : 60 flight time total : 17560 flight time type : 3180
ASRS Report	521850
Events
Anomaly	altitude deviation : overshoot non adherence : clearance
Resolutory Action	controller : issued advisory flight crew : returned to assigned altitude
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While climbing out from apa, the aircraft went 1000 ft above ATC clearance altitude of 8000 ft. The deviation was due to first officer setting 10000 ft in altitude controller according to the plain 2 SID, rather than the ATC clearance setting. The clearance he had copied was for an altitude of 8000 ft. However, while setting up the departure SID, he read 10000 ft. I was outside the aircraft when first officer had copied the ATC clearance. After start/run-up, we discussed the clearance and first officer confirmed altitude of 10000 ft. We were cleared for takeoff and to fly runway heading. As we climbed through 8000 ft, ATC asked what our altitude was. The first officer gave ATC 8700 ft, at which time ATC informed us 8000 ft was our clearance altitude. I stopped at 9000 ft and descended to 8000 ft. This situation would likely have not occurred had both crew members heard the ATC clearance.

Original NASA ASRS Text

Title: A G-4 FLT CREW OVERSHOOTS ASSIGNED ALT.

Narrative: WHILE CLBING OUT FROM APA, THE ACFT WENT 1000 FT ABOVE ATC CLRNC ALT OF 8000 FT. THE DEV WAS DUE TO FO SETTING 10000 FT IN ALT CONTROLLER ACCORDING TO THE PLAIN 2 SID, RATHER THAN THE ATC CLRNC SETTING. THE CLRNC HE HAD COPIED WAS FOR AN ALT OF 8000 FT. HOWEVER, WHILE SETTING UP THE DEP SID, HE READ 10000 FT. I WAS OUTSIDE THE ACFT WHEN FO HAD COPIED THE ATC CLRNC. AFTER START/RUN-UP, WE DISCUSSED THE CLRNC AND FO CONFIRMED ALT OF 10000 FT. WE WERE CLRED FOR TKOF AND TO FLY RWY HDG. AS WE CLBED THROUGH 8000 FT, ATC ASKED WHAT OUR ALT WAS. THE FO GAVE ATC 8700 FT, AT WHICH TIME ATC INFORMED US 8000 FT WAS OUR CLRNC ALT. I STOPPED AT 9000 FT AND DSNDED TO 8000 FT. THIS SIT WOULD LIKELY HAVE NOT OCCURRED HAD BOTH CREW MEMBERS HEARD THE ATC CLRNC.

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.