<< >> NASA ASRS Report 565488, November 2002

Dual nullifying evasive actions fail to avoid an near midair collision between a lancair and DHC8 in a night operation 25 mi south of rochester, ny.

Attributes
ACN	565488
Time
Date	200211
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : roc.airport
State Reference	NY
Altitude	msl bound lower : 12000 msl bound upper : 12400
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zny.artcc
Operator	general aviation : personal
Make Model Name	Experimental
Operating Under FAR Part	Part 91
Flight Phase	descent : intermediate altitude
Flight Plan	None
Aircraft 2
Controlling Facilities	artcc : zny.artcc
Operator	common carrier : air carrier
Make Model Name	Dash 8 Series Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 50 flight time total : 4500 flight time type : 500
ASRS Report	565488
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	conflict : nmac non adherence : far other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : transpoder prox detector other flight crewa other flight crewb
Resolutory Action	flight crew : took evasive action
Miss Distance	horizontal : 100 vertical : 100
Supplementary
Problem Areas	Flight Crew Human Performance Environmental Factor Airspace Structure ATC Human Performance Aircraft
Primary Problem	Flight Crew Human Performance

Narrative:

VFR at night from det to pou at 13500 ft. When my flight navigation system suggested starting my descent, I set the autoplt vertical speed at 300 FPM. At around 12400 ft I noticed my transponder proximity warning indicating a plane nearby. I then saw landing lights in my right wind screen at about 40 degrees off my direction of flight. It did not move relative to me, so I realized we were on a collision course. I disengaged the autoplt and initiated a turn to the left since the light was in my right view. The light from the other plane still did not move relatively. It got closer. I turned more. Finally I pushed the nose over. The other plane passed to the left and above. The problem here is that the other plane could not see my direction of flight and so turned right to avoid what he thought was oncoming. New lessons: 1) always turn right to avoid oncoming traffic even if it is to the right. 2) move quickly through IFR altitudes when other traffic is around.

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Original NASA ASRS Text

Title: DUAL NULLIFYING EVASIVE ACTIONS FAIL TO AVOID AN NMAC BTWN A LANCAIR AND DHC8 IN A NIGHT OP 25 MI S OF ROCHESTER, NY.

Narrative: VFR AT NIGHT FROM DET TO POU AT 13500 FT. WHEN MY FLT NAV SYS SUGGESTED STARTING MY DSCNT, I SET THE AUTOPLT VERT SPD AT 300 FPM. AT AROUND 12400 FT I NOTICED MY XPONDER PROX WARNING INDICATING A PLANE NEARBY. I THEN SAW LNDG LIGHTS IN MY R WIND SCREEN AT ABOUT 40 DEGS OFF MY DIRECTION OF FLT. IT DID NOT MOVE RELATIVE TO ME, SO I REALIZED WE WERE ON A COLLISION COURSE. I DISENGAGED THE AUTOPLT AND INITIATED A TURN TO THE L SINCE THE LIGHT WAS IN MY R VIEW. THE LIGHT FROM THE OTHER PLANE STILL DID NOT MOVE RELATIVELY. IT GOT CLOSER. I TURNED MORE. FINALLY I PUSHED THE NOSE OVER. THE OTHER PLANE PASSED TO THE L AND ABOVE. THE PROB HERE IS THAT THE OTHER PLANE COULD NOT SEE MY DIRECTION OF FLT AND SO TURNED R TO AVOID WHAT HE THOUGHT WAS ONCOMING. NEW LESSONS: 1) ALWAYS TURN R TO AVOID ONCOMING TFC EVEN IF IT IS TO THE R. 2) MOVE QUICKLY THROUGH IFR ALTS WHEN OTHER TFC IS AROUND.

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.