C150 and low wing aircraft had near midair collision.

Attributes
ACN	415342
Time
Date	199809
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : o20
State Reference	CA
Altitude	msl bound lower : 2500 msl bound upper : 2500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Cessna 150
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Flight Plan	None
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Person 1
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : cfi pilot : commercial
Experience	flight time last 90 days : 38 flight time total : 760 flight time type : 500
ASRS Report	415342
Person 2
Affiliation	Other
Function	instruction : trainee
Qualification	other other : other
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 100 vertical : 100
Supplementary
Primary Problem	Weather

Narrative:

Heading eastbound on a training flight at 2500 ft MSL, when we saw another aircraft pass below us about 100 ft below and 100 ft to our right. A climb of about 50 ft was our action taken (with the time given). I believe the cause for not seeing the aircraft was due to the haze, and not seeing any lights on the other aircraft. Our beacon and navigation lights were on before this event took place.

Original NASA ASRS Text

Title: C150 AND LOW WING ACFT HAD NMAC.

Narrative: HDG EBOUND ON A TRAINING FLT AT 2500 FT MSL, WHEN WE SAW ANOTHER ACFT PASS BELOW US ABOUT 100 FT BELOW AND 100 FT TO OUR R. A CLB OF ABOUT 50 FT WAS OUR ACTION TAKEN (WITH THE TIME GIVEN). I BELIEVE THE CAUSE FOR NOT SEEING THE ACFT WAS DUE TO THE HAZE, AND NOT SEEING ANY LIGHTS ON THE OTHER ACFT. OUR BEACON AND NAV LIGHTS WERE ON BEFORE THIS EVENT TOOK PLACE.

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.