<< >> NASA ASRS Report 482806, August 2000

Near midair collision between a glider in cruise flight and a beech baron passing 20 ft below. No apparent evasive action taken from either aircraft pilot.

Attributes
ACN	482806
Time
Date	200008
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : tsa.airport
State Reference	TX
Altitude	msl single value : 6500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Sail Plane
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	cruise : level
Route In Use	enroute : direct
Flight Plan	None
Aircraft 2
Operator	general aviation : personal
Make Model Name	Baron 55/Cochise
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : multi engine pilot : commercial pilot : atp pilot : flight engineer technician : airframe technician : powerplant
Person 2
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : multi engine pilot : private
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact none taken : insufficient time
Miss Distance	horizontal : 0 vertical : 20
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

I was on a local cross country flight from tsa glider port, approximately 10 NM south at 6500 ft MSL (thermalling). From directly behind came a beech baron, passing me from 20 ft below sswbound. Other pilot did not alter course after passing, so I assume that he never saw us. Other aircraft came from directly behind me, so I never had a chance to see him until passing. The local WX was VFR, but about 10-12 NM due to haze (visibility). The grob 103 from behind, in haze, would have a very small x-section, and was probably invisible to the pilot of the baron.

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Original NASA ASRS Text

Title: NMAC BTWN A GLIDER IN CRUISE FLT AND A BEECH BARON PASSING 20 FT BELOW. NO APPARENT EVASIVE ACTION TAKEN FROM EITHER ACFT PLT.

Narrative: I WAS ON A LCL XCOUNTRY FLT FROM TSA GLIDER PORT, APPROX 10 NM S AT 6500 FT MSL (THERMALLING). FROM DIRECTLY BEHIND CAME A BEECH BARON, PASSING ME FROM 20 FT BELOW SSWBOUND. OTHER PLT DID NOT ALTER COURSE AFTER PASSING, SO I ASSUME THAT HE NEVER SAW US. OTHER ACFT CAME FROM DIRECTLY BEHIND ME, SO I NEVER HAD A CHANCE TO SEE HIM UNTIL PASSING. THE LCL WX WAS VFR, BUT ABOUT 10-12 NM DUE TO HAZE (VIS). THE GROB 103 FROM BEHIND, IN HAZE, WOULD HAVE A VERY SMALL X-SECTION, AND WAS PROBABLY INVISIBLE TO THE PLT OF THE BARON.

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.