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GA flight instructor and student encounter moderate turbulence and avoid near midair collision while attempting to stay below dfw class B airspace.
| Attributes | |
| ACN | 444161 |
| Time | |
| Date | 199907 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : dto.airport |
| State Reference | TX |
| Altitude | msl single value : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Weather Elements | Turbulence other |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : d10.tracon |
| Operator | general aviation : instructional |
| Make Model Name | PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other |
| Flight Phase | cruise : enroute altitude change |
| Flight Plan | None |
| Aircraft 2 | |
| Controlling Facilities | tracon : d10.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Small Transport, Low Wing, 2 Turboprop Eng |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | other |
| Function | instruction : instructor oversight : pic |
| Qualification | pilot : commercial pilot : cfi pilot : instrument |
| Experience | flight time last 90 days : 200 flight time total : 930 flight time type : 100 |
| ASRS Report | 444161 |
| Person 2 | |
| Affiliation | other |
| Function | instruction : trainee |
| Qualification | pilot : student |
| Experience | flight time last 90 days : 10 flight time total : 10 flight time type : 10 |
| ASRS Report | 444162 |
| Events | |
| Anomaly | airspace violation : entry non adherence : far other anomaly other |
| Independent Detector | other controllera other flight crewa other flight crewb |
| Resolutory Action | flight crew : took evasive action flight crew : exited penetrated airspace |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 1000 vertical : 500 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Airspace Structure |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
My aircraft was on an instrument training flight with a student 5 NM west of the denton, tx, airport. We had been maneuvering between 2000-3500 ft MSL. The temperature was 37 degrees C and the convective turbulence from heat thermals was moderate. I felt that the aircraft had proceeded to the south and did not want to enter class B airspace without a clearance. I directed my student to make a turn to a 350 degree heading, and upon climb out below 3000 ft MSL, I observed a twin engine commuter plane to my left descending on a 120 degree heading above and ahead of my aircraft. I feel that there was greater than 500 ft vertical separation and greater than 1000 ft horizontal separation between the aircraft. My student was wearing a view limiting device and saw nothing, so I nosed over my aircraft to make sure a conflict would not occur. I also feel that I did not enter class B airspace at any time. Upon return to denton, I was informed that an approach controller had called, and I promptly returned his call to immediately discuss his concerns.
Original NASA ASRS Text
Title: GA FLT INSTRUCTOR AND STUDENT ENCOUNTER MODERATE TURB AND AVOID NMAC WHILE ATTEMPTING TO STAY BELOW DFW CLASS B AIRSPACE.
Narrative: MY ACFT WAS ON AN INST TRAINING FLT WITH A STUDENT 5 NM W OF THE DENTON, TX, ARPT. WE HAD BEEN MANEUVERING BTWN 2000-3500 FT MSL. THE TEMP WAS 37 DEGS C AND THE CONVECTIVE TURB FROM HEAT THERMALS WAS MODERATE. I FELT THAT THE ACFT HAD PROCEEDED TO THE S AND DID NOT WANT TO ENTER CLASS B AIRSPACE WITHOUT A CLRNC. I DIRECTED MY STUDENT TO MAKE A TURN TO A 350 DEG HDG, AND UPON CLBOUT BELOW 3000 FT MSL, I OBSERVED A TWIN ENG COMMUTER PLANE TO MY L DSNDING ON A 120 DEG HDG ABOVE AND AHEAD OF MY ACFT. I FEEL THAT THERE WAS GREATER THAN 500 FT VERT SEPARATION AND GREATER THAN 1000 FT HORIZ SEPARATION BTWN THE ACFT. MY STUDENT WAS WEARING A VIEW LIMITING DEVICE AND SAW NOTHING, SO I NOSED OVER MY ACFT TO MAKE SURE A CONFLICT WOULD NOT OCCUR. I ALSO FEEL THAT I DID NOT ENTER CLASS B AIRSPACE AT ANY TIME. UPON RETURN TO DENTON, I WAS INFORMED THAT AN APCH CTLR HAD CALLED, AND I PROMPTLY RETURNED HIS CALL TO IMMEDIATELY DISCUSS HIS CONCERNS.
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.