C560 crew had altitude overshoot in ric class C airspace.

Attributes
ACN	481010
Time
Date	200008
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ric.airport
State Reference	VA
Altitude	msl bound lower : 2600 msl bound upper : 3000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ric.tracon
Operator	general aviation : corporate
Make Model Name	Citation V
Operating Under FAR Part	Part 91
Navigation In Use	other vortac
Flight Phase	descent : intermediate altitude
Route In Use	arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 12500 flight time type : 2500
ASRS Report	481010
Person 2
Affiliation	company : corporate
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : overshoot non adherence : company policies non adherence : clearance non adherence : published procedure other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : returned to assigned altitude none taken : detected after the fact
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

The first officer was flying on a vector for approach to ric. While flying an assigned heading, we were given a descent clearance from 4000 ft to 3000 ft MSL. The autoplt was engaged and flying the descent. Upon reaching our assigned altitude, the autoplt failed to capture altitude and level the aircraft. We descended 400 ft below our assigned altitude before immediate action was taken to climb back to our assigned altitude. There were no conflicts with other traffic and no comments were made by ATC.

Original NASA ASRS Text

Title: C560 CREW HAD ALT OVERSHOOT IN RIC CLASS C AIRSPACE.

Narrative: THE FO WAS FLYING ON A VECTOR FOR APCH TO RIC. WHILE FLYING AN ASSIGNED HDG, WE WERE GIVEN A DSCNT CLRNC FROM 4000 FT TO 3000 FT MSL. THE AUTOPLT WAS ENGAGED AND FLYING THE DSCNT. UPON REACHING OUR ASSIGNED ALT, THE AUTOPLT FAILED TO CAPTURE ALT AND LEVEL THE ACFT. WE DSNDED 400 FT BELOW OUR ASSIGNED ALT BEFORE IMMEDIATE ACTION WAS TAKEN TO CLB BACK TO OUR ASSIGNED ALT. THERE WERE NO CONFLICTS WITH OTHER TFC AND NO COMMENTS WERE MADE BY ATC.

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.