GA pilot near pwk performed evasive climb to avoid traffic. Traffic was shown on TCAS display.

Attributes
ACN	1332634
Time
Date	201602
Local Time Of Day	1201-1800
Place
Locale Reference	PWK.Airport
State Reference	IL
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Make Model Name	Small Aircraft High Wing 1 Eng Fixed Gear
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Route In Use	Direct
Flight Plan	None
Aircraft 2
Make Model Name	Small Aircraft High Wing 1 Eng Fixed Gear
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Person 1
Function	Pilot Flying
Qualification	Flight Crew Private
Experience	Flight Crew Last 90 Days 25 Flight Crew Total 175 Flight Crew Type 175
Person 2
Function	Pilot Not Flying Check Pilot
Qualification	Flight Crew Flight Instructor
Events
Anomaly	Conflict NMAC
Miss Distance	Horizontal 400 Vertical 300

Narrative:

Reporting aircraft was returning to pwk. Traffic at 12 and several miles was seen on the TCAS. We were monitoring pwk tower at the time of the incident. External lights were on. Right front seat passenger acknowledged traffic; PIC was not able to see it until it was within 5 miles. Conflicting aircraft was against darkening overcast. PIC saw the conflicting and a few seconds later; rear seat passenger said to pull up and turn to the right. Conflicting traffic passed below and to the right of the reporting aircraft. Listening to chicago TRACON would have been helpful in avoiding the incident.

Original NASA ASRS Text

Title: GA pilot near PWK performed evasive climb to avoid traffic. Traffic was shown on TCAS display.

Narrative: Reporting aircraft was returning to PWK. Traffic at 12 and several miles was seen on the TCAS. We were monitoring PWK Tower at the time of the incident. External lights were on. Right front seat passenger acknowledged traffic; PIC was not able to see it until it was within 5 miles. Conflicting aircraft was against darkening overcast. PIC saw the conflicting and a few seconds later; rear seat passenger said to pull up and turn to the right. Conflicting traffic passed below and to the right of the reporting aircraft. Listening to Chicago TRACON would have been helpful in avoiding the incident.

Data retrieved from NASA's ASRS site 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.