In a slow descent after an altitude change to avoid traffic an altitude overshoot occurs.

Attributes
ACN	523860
Time
Date	200109
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : flo.vortac
State Reference	SC
Altitude	msl bound lower : 6500 msl bound upper : 7000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Fixed Gear
Flight Phase	cruise : enroute altitude change
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : private pilot : instrument
Experience	flight time last 90 days : 15 flight time total : 480 flight time type : 15
ASRS Report	523860
Events
Anomaly	altitude deviation : overshoot non adherence : clearance non adherence : far
Resolutory Action	controller : issued advisory 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:

Controller called for climb from 7000 ft to 8000 ft for traffic avoidance. Then controller called for descent back to 7000 ft. On autoplt gradual descent I overshot and at 6500 ft controller advised of altitude. I resumed 7000 ft uneventfully.

Original NASA ASRS Text

Title: IN A SLOW DSCNT AFTER AN ALT CHANGE TO AVOID TFC AN ALT OVERSHOOT OCCURS.

Narrative: CTLR CALLED FOR CLB FROM 7000 FT TO 8000 FT FOR TFC AVOIDANCE. THEN CTLR CALLED FOR DSCNT BACK TO 7000 FT. ON AUTOPLT GRADUAL DSCNT I OVERSHOT AND AT 6500 FT CTLR ADVISED OF ALT. I RESUMED 7000 FT UNEVENTFULLY.

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.