Narrative:

I was checking out a 200+ hour private pilot in a C172RG. We were making standard radio calls (ie, crosswind, downwind). Upon turning onto the base leg, the left wing began to dip and suddenly there was a low wing piper climbing and turning to the right. I took the controls and began a climbing right turn to avoid the aircraft. I believe the aircraft was a 4 passenger piper cherokee warrior. One had recently departed eqy (according to dispatch) with 2 adults, and 3 children. It was an elderly gentleman who made no radio calls. Not even a radio check when engine was started. I think the situation arose because the aircraft departed runway 23 when the active was runway 5. He then made a climbing right turn out of the pattern.

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Original NASA ASRS Text

Title: A C172 INSTRUCTOR PLT AND TRAINEE HAD AN NMAC WITH A PA28 THAT DEPARTED THE OPPOSITE DIRECTION WITHOUT MAKING RADIO CALLS.

Narrative: I WAS CHKING OUT A 200+ HR PVT PLT IN A C172RG. WE WERE MAKING STANDARD RADIO CALLS (IE, XWIND, DOWNWIND). UPON TURNING ONTO THE BASE LEG, THE L WING BEGAN TO DIP AND SUDDENLY THERE WAS A LOW WING PIPER CLBING AND TURNING TO THE R. I TOOK THE CTLS AND BEGAN A CLBING R TURN TO AVOID THE ACFT. I BELIEVE THE ACFT WAS A 4 PAX PIPER CHEROKEE WARRIOR. ONE HAD RECENTLY DEPARTED EQY (ACCORDING TO DISPATCH) WITH 2 ADULTS, AND 3 CHILDREN. IT WAS AN ELDERLY GENTLEMAN WHO MADE NO RADIO CALLS. NOT EVEN A RADIO CHK WHEN ENG WAS STARTED. I THINK THE SIT AROSE BECAUSE THE ACFT DEPARTED RWY 23 WHEN THE ACTIVE WAS RWY 5. HE THEN MADE A CLBING R TURN OUT OF THE PATTERN.

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.