A BE100 changed heading after seeing reported traffic.

Attributes
ACN	436921
Time
Date	199905
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : dsm.vortac
State Reference	IA
Altitude	msl bound lower : 10500 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zau.artcc
Operator	general aviation : corporate
Make Model Name	King Air 100 A/B
Operating Under FAR Part	Part 91
Navigation In Use	other vortac
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zau.artcc
Operator	general aviation : corporate
Make Model Name	King Air C90 E90
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Person 1
Affiliation	company : corporate
Function	flight crew : single pilot
Qualification	pilot : multi engine pilot : instrument pilot : cfi pilot : atp pilot : commercial
Experience	flight time last 90 days : 130 flight time total : 7000 flight time type : 310
ASRS Report	436921
Person 2
Affiliation	company : corporate
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument pilot : multi engine
Events
Anomaly	conflict : airborne less severe
Independent Detector	other flight crewa
Resolutory Action	flight crew : took precautionary avoidance action
Miss Distance	horizontal : 2000 vertical : 0
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Between 10500-11000 ft chicago told me to level off, traffic 12 O'clock position, and I missed the distance. As I started to lower the nose. I saw the other aircraft at my 11:30 O'clock position, moving slightly from my left to right. I watched the aircraft for a couple of seconds to confirm its track, and then I made a left hand turn. This was not an abrupt maneuver, and I turned only 20-25 degrees from my flight path. Chicago told me dsm had handed me off to them too soon, and they were going to 'follow-up' on this. I'm glad it was VMC, or it could have gotten very close.

Original NASA ASRS Text

Title: A BE100 CHANGED HEADING AFTER SEEING RPTED TFC.

Narrative: BTWN 10500-11000 FT CHICAGO TOLD ME TO LEVEL OFF, TFC 12 O'CLOCK POS, AND I MISSED THE DISTANCE. AS I STARTED TO LOWER THE NOSE. I SAW THE OTHER ACFT AT MY 11:30 O'CLOCK POS, MOVING SLIGHTLY FROM MY L TO R. I WATCHED THE ACFT FOR A COUPLE OF SECONDS TO CONFIRM ITS TRACK, AND THEN I MADE A L HAND TURN. THIS WAS NOT AN ABRUPT MANEUVER, AND I TURNED ONLY 20-25 DEGS FROM MY FLT PATH. CHICAGO TOLD ME DSM HAD HANDED ME OFF TO THEM TOO SOON, AND THEY WERE GOING TO 'FOLLOW-UP' ON THIS. I'M GLAD IT WAS VMC, OR IT COULD HAVE GOTTEN VERY CLOSE.

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.