Narrative:

I was on a flight to sba at 10;500 ft in contact with socal approach for flight following. In banning pass I was north of highway 10 climbing through 8600 ft for 10;500 ft when my passenger alerted me of an airplane at my 3-4 o'clock position; at about 2000 ft horizontal and closing. I made an evasive left turn to avoid getting closer. The aircraft was a bonanza; straight tail. I contacted socal and reported the encounter. The controller said he only showed myself and 2 other aircraft that were no factor and knew nothing of the bonanza. Would the controller not see the bonanza if it were without transponder at all? I had stopped monitoring unicom just prior to the incident and never heard any bonanza transmitting. Busy corridor; maybe positive control should be required of all aircraft.

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Original NASA ASRS Text

Title: C182 pilot reports NMAC with Bonanza at 8600 FT in the Banning Pass area east of LAX. Reporter was receiving flight following from SCT who did not have the Bonanza on radar.

Narrative: I was on a flight to SBA at 10;500 FT in contact with SoCal Approach for flight following. In Banning Pass I was north of Highway 10 climbing through 8600 FT for 10;500 FT when my passenger alerted me of an airplane at my 3-4 o'clock position; at about 2000 FT horizontal and closing. I made an evasive left turn to avoid getting closer. The aircraft was a Bonanza; straight tail. I contacted SoCal and reported the encounter. The Controller said he only showed myself and 2 other aircraft that were no factor and knew nothing of the Bonanza. Would the Controller not see the Bonanza if it were without transponder at all? I had stopped monitoring UNICOM just prior to the incident and never heard any Bonanza transmitting. Busy corridor; maybe positive control should be required of all aircraft.

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.