NMAC BTWN A C152 TURNING 45 DEG ENTRY TO DOWNWIND AND A XING SUPER CUB ON DOWNWIND IN THE TFC PATTERN AT 1500 FT PT 5 NM W OF JWY.

Narrative

NMAC; JUL/SAT/04; XA50 CDT OVER MIDWAY REGIONAL ARPT (JWY) MIDLOTHIAN; TX. DURING A PRACTICE DIVERSION; ON A DUAL INSTRUCTION FLT FOR PVT PLT; WE CALLED APCHING THE ARPT ON CTAF 122.975. WE ANNOUNCED XING THE ARPT ABOVE 2000 FT MSL AND AGAIN ON 45 DEGS TO DOWNWIND AT 1700 FT MSL DSNDING TO 1500 FT MSL FOR DOWNWIND. JUST BEFORE REACHING L DOWNWIND; FOR RWY 36; THE STUDENT PLT SPOTTED A SUPER CUB AT 10 DEGS AHEAD OF THE L WING ON A COLLISION COURSE AND INITIATED A R TURN AT 30 DEG BANK. THE STUDENT ESTIMATED THE CLOSEST APCH TO BE 200 FT. THE INSTRUCTOR DID NOT SEE THE OTHER ACFT; POSSIBLY DUE TO THE FORWARD WING SUPPORT BTWN THE SIDE WINDOW AND FORWARD WINDSCREEN IN HIS LINE OF SIGHT. WE HEARD THE FIRST XMISSION FROM THE SUPER CUB WHEN HE CALLED 'DOWNWIND' ABOUT 20 SECONDS AFTER WE TURNED AWAY. THE SUPER CUB CONTINUED ON DOWNWIND AND LANDED. AGGRAVATING CIRCUMSTANCES: 1) THE SUPER CUB DID NOT APPARENTLY MAKE RADIO XMISSIONS ON CTAF UNTIL AFTER THE NMAC. 2) THE SUN WAS LOW IN THE SKY BEHIND US AND WOULD HAVE MADE IT DIFFICULT FOR THE SUPER CUB PLT TO SEE US ON 45 DEGS TO DOWNWIND. 3) WE WERE IN A SLIGHT DSCNT AT 1700 FT MSL ON 45 DEGS TO DOWNWIND; NOT YET HAVING LEVELED AT 1500 FT UNTIL JUST ABOUT THE TIME OF THE NMAC. WE SHOULD HAVE BEEN LEVEL BEFORE TURNING 45 DEGS TO DOWNWIND. NO RPT WAS FILED WITH THE FAA.