Cpr pilot climbs above assigned altitude.

Attributes
ACN	451013
Time
Date	199910
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : pdk.airport
State Reference	GA
Altitude	msl bound lower : 5000 msl bound upper : 5700
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : atl.tracon
Operator	general aviation : corporate
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Operating Under FAR Part	Part 91
Navigation In Use	Other
Flight Phase	climbout : intermediate altitude
Route In Use	departure : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : atp pilot : multi engine
Experience	flight time last 90 days : 50 flight time total : 6000 flight time type : 2000
ASRS Report	451013
Person 2
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : multi engine pilot : atp
Experience	flight time last 90 days : 50 flight time total : 11500 flight time type : 50
ASRS Report	451010
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance
Independent Detector	other controllera
Resolutory Action	flight crew : returned to assigned altitude
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were given a clearance to climb to a higher altitude. After receiving our initial clearance, I heard ATC provide a clearance to a higher altitude. I heard ATC provide an altitude climb clearance to 9000 ft. I read back our clearance and dialed in 9000 ft into the altitude reporter. During my instrument scan, I noticed we were level at 5000 ft. Observing the altitude reporter set at 9000 ft, I advised the captain (PIC) that we were cleared to 9000 ft. We initiated a climb and at approximately 5700 ft, ATC advised that we had only been cleared to 5000 ft. They requested a descent to return to 5000 ft. We descended to 5000 ft without any further incident. We completed our flight without any other incident. To prevent this form occurring again, we should question ATC and each other about the clearance if a discrepancy in the altitude reporter setting and our current altitude and or flight.

Original NASA ASRS Text

Title: CPR PLT CLBS ABOVE ASSIGNED ALT.

Narrative: WE WERE GIVEN A CLRNC TO CLB TO A HIGHER ALT. AFTER RECEIVING OUR INITIAL CLRNC, I HEARD ATC PROVIDE A CLRNC TO A HIGHER ALT. I HEARD ATC PROVIDE AN ALT CLB CLRNC TO 9000 FT. I READ BACK OUR CLRNC AND DIALED IN 9000 FT INTO THE ALT RPTR. DURING MY INST SCAN, I NOTICED WE WERE LEVEL AT 5000 FT. OBSERVING THE ALT RPTR SET AT 9000 FT, I ADVISED THE CAPT (PIC) THAT WE WERE CLRED TO 9000 FT. WE INITIATED A CLB AND AT APPROX 5700 FT, ATC ADVISED THAT WE HAD ONLY BEEN CLRED TO 5000 FT. THEY REQUESTED A DSCNT TO RETURN TO 5000 FT. WE DSNDED TO 5000 FT WITHOUT ANY FURTHER INCIDENT. WE COMPLETED OUR FLT WITHOUT ANY OTHER INCIDENT. TO PREVENT THIS FORM OCCURRING AGAIN, WE SHOULD QUESTION ATC AND EACH OTHER ABOUT THE CLRNC IF A DISCREPANCY IN THE ALT RPTR SETTING AND OUR CURRENT ALT AND OR FLT.

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.