A C172 pilot reported an near midair collision after he took off from a non tower airport and found ...

Narrative:

After receiving our IFR clearance we had a two minute clearance void time. We made a radio call on the CTAF frequency. We did not hear any response and went to check the tower frequency to make sure that there were no planes inbound transitioning through the class C airspace. Checked final and saw no one. We took off and went over to approach to get traffic advisories for the busy area. When we were on with approach we noticed that there was a plane slightly behind us that appeared to be in the traffic pattern going around. They must have been in the traffic pattern because ATC never advised us of them and we never heard them in the traffic pattern.

Original NASA ASRS Text

Title: A C172 pilot reported an NMAC after he took off from a non tower airport and found another aircraft in the pattern who apparently had not used CTAF.

Narrative: After receiving our IFR clearance we had a two minute clearance void time. We made a radio call on the CTAF frequency. We did not hear any response and went to check the Tower frequency to make sure that there were no planes inbound transitioning through the Class C Airspace. Checked final and saw no one. We took off and went over to approach to get traffic advisories for the busy area. When we were on with Approach we noticed that there was a plane slightly behind us that appeared to be in the traffic pattern going around. They must have been in the traffic pattern because ATC never advised us of them and we never heard them in the traffic pattern.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	901681
Time
Date	201007
Local Time Of Day	0601-1200
Place
Locale Reference	VUO.Airport
State Reference	WA
Environment
Flight Conditions	IMC
Aircraft 1
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	Takeoff
Route In Use	Vectors
Flight Plan	IFR
Person 1
Function	Pilot Flying Single Pilot
Qualification	Flight Crew Student
Events
Anomaly	Conflict NMAC
Miss Distance	Horizontal 300 Vertical 200

A C172 pilot reported an near midair collision after he took off from a non tower airport and found another aircraft in the pattern who apparently had not used CTAF.