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Near midair collision between a C152 turning 45 degree entry to downwind and a crossing super cub on downwind in the traffic pattern at 1500 ft pt 5 NM west of jwy.
| Attributes | |
| ACN | 625991 |
| Time | |
| Date | 200407 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| State Reference | TX |
| Altitude | msl bound lower : 1500 msl bound upper : 1700 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : instructional |
| Make Model Name | Cessna 152 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Flight Plan | None |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | PA-18/19 Super Cub |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Person 1 | |
| Affiliation | other |
| Function | instruction : instructor |
| Qualification | pilot : atp pilot : cfi pilot : instrument pilot : multi engine |
| Experience | flight time last 90 days : 15 flight time total : 3800 flight time type : 300 |
| ASRS Report | 625991 |
| Person 2 | |
| Affiliation | other |
| Function | instruction : trainee |
| Events | |
| Anomaly | conflict : nmac non adherence : far non adherence : published procedure other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Miss Distance | horizontal : 200 vertical : 0 |
| Supplementary | |
| Problem Areas | Aircraft Environmental Factor Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Near midair collision, jul/sat/04, XA50 CDT over midway regional airport (jwy) midlothian, tx. During a practice diversion, on a dual instruction flight for private pilot, we called approaching the airport on CTAF 122.975. We announced crossing the airport above 2000 ft MSL and again on 45 degrees to downwind at 1700 ft MSL descending to 1500 ft MSL for downwind. Just before reaching left downwind, for runway 36, the student pilot spotted a super cub at 10 degrees ahead of the left wing on a collision course and initiated a right turn at 30 degree bank. The student estimated the closest approach to be 200 ft. The instructor did not see the other aircraft, possibly due to the forward wing support between the side window and forward windscreen in his line of sight. We heard the first transmission 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 near midair collision. 2) the sun was low in the sky behind us and would have made it difficult for the super cub pilot to see us on 45 degrees to downwind. 3) we were in a slight descent at 1700 ft MSL on 45 degrees to downwind, not yet having leveled at 1500 ft until just about the time of the near midair collision. We should have been level before turning 45 degrees to downwind. No report was filed with the FAA.
Original NASA ASRS Text
Title: 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.
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.