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Flight crew of an medium large transport air carrier aircraft took evasive action upon sighting an aircraft below their assigned altitude doing aerobatic maneuvers.
| Attributes | |
| ACN | 251650 |
| Time | |
| Date | 199309 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 5000 msl bound upper : 5200 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | cruise other cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft |
| Flight Phase | climbout : intermediate altitude descent other other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 210 flight time total : 7500 flight time type : 830 |
| ASRS Report | 251650 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : far other anomaly other |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 900 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
Narrative:
Being vectored for visual approach runway 13R dfw, level at 5000 ft in dfw TCA (at floor). Saw traffic 12 O'clock, 2 mi low. Small aircraft biplane doing acrobatics, passed under us by 1000 ft or less. We deviated right and climbed 200 ft to avoid. Hard to know where to go to avoid aircraft doing aerobatics. No advisory from ATC. No advisory from TCASII. Presumably, no transponder aircraft. I believe one is required in this airspace. We were 22 NM from dfw. This may be a legal place to perform aerobatics per current FARS, but it shouldn't be. Didn't know for sure that he wouldn't climb into us as we passed over him.
Original NASA ASRS Text
Title: FLC OF AN MLG ACR ACFT TOOK EVASIVE ACTION UPON SIGHTING AN ACFT BELOW THEIR ASSIGNED ALT DOING AEROBATIC MANEUVERS.
Narrative: BEING VECTORED FOR VISUAL APCH RWY 13R DFW, LEVEL AT 5000 FT IN DFW TCA (AT FLOOR). SAW TFC 12 O'CLOCK, 2 MI LOW. SMA BIPLANE DOING ACROBATICS, PASSED UNDER US BY 1000 FT OR LESS. WE DEVIATED R AND CLBED 200 FT TO AVOID. HARD TO KNOW WHERE TO GO TO AVOID ACFT DOING AEROBATICS. NO ADVISORY FROM ATC. NO ADVISORY FROM TCASII. PRESUMABLY, NO XPONDER ACFT. I BELIEVE ONE IS REQUIRED IN THIS AIRSPACE. WE WERE 22 NM FROM DFW. THIS MAY BE A LEGAL PLACE TO PERFORM AEROBATICS PER CURRENT FARS, BUT IT SHOULDN'T BE. DIDN'T KNOW FOR SURE THAT HE WOULDN'T CLB INTO US AS WE PASSED OVER HIM.
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.