Small aircraft had near midair collision with small transport, both VFR. Pilot of small aircraft saw small transport aircraft. Pilot of small transport apparently did not see small aircraft. Small aircraft took evasive action turn.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	117489
Time
Date	198907
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : den
State Reference	CO
Altitude	msl bound lower : 6800 msl bound upper : 6900
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : bkf
Operator	general aviation : personal
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other
Flight Plan	None
Aircraft 2
Operator	other
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	cruise other
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 30 flight time total : 147 flight time type : 147
ASRS Report	117489
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Events
Anomaly	conflict : nmac non adherence : far other anomaly other
Independent Detector	other other : unspecified cockpit
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Miss Distance	horizontal : 250 vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I was flying northbound from centennial airport (denver, co) to greeley's weld county airport. I called buckley angb tower to get a clearance to transit their airspace. Shortly after, I saw what I believe was an small transport out of the corner of my right eye. He was traveling wbound at my altitude, 6800 MSL, or approximately 1400 AGL. I saw that we were on a collision course so I turned the aircraft to the right to evade him. I did not think he saw me because it appeared that he turned into me, or aimed for me. We successfully avoided each other, but at an uncomfortable margin. If either had not taken evasive action, I feel there would have been a good possibility of a midair collision. Since this was uncontrolled airspace, the only option for separation is see and avoid, which we did. The floor of the denver TCA in this area is 7000 MSL. I was aware of this and never penetrated the TCA. I think that the primary cause for the occurrence was simply the see and avoid concept. I realize it is the only way to remain separated in uncontrolled airspace and below 3000' AGL, but it can be very dangerous.

Original NASA ASRS Text

Title: SMA HAD NMAC WITH SMT, BOTH VFR. PLT OF SMA SAW SMT ACFT. PLT OF SMT APPARENTLY DID NOT SEE SMA. SMA TOOK EVASIVE ACTION TURN.

Narrative: I WAS FLYING NBOUND FROM CENTENNIAL ARPT (DENVER, CO) TO GREELEY'S WELD COUNTY ARPT. I CALLED BUCKLEY ANGB TWR TO GET A CLRNC TO TRANSIT THEIR AIRSPACE. SHORTLY AFTER, I SAW WHAT I BELIEVE WAS AN SMT OUT OF THE CORNER OF MY RIGHT EYE. HE WAS TRAVELING WBOUND AT MY ALT, 6800 MSL, OR APPROX 1400 AGL. I SAW THAT WE WERE ON A COLLISION COURSE SO I TURNED THE ACFT TO THE RIGHT TO EVADE HIM. I DID NOT THINK HE SAW ME BECAUSE IT APPEARED THAT HE TURNED INTO ME, OR AIMED FOR ME. WE SUCCESSFULLY AVOIDED EACH OTHER, BUT AT AN UNCOMFORTABLE MARGIN. IF EITHER HAD NOT TAKEN EVASIVE ACTION, I FEEL THERE WOULD HAVE BEEN A GOOD POSSIBILITY OF A MIDAIR COLLISION. SINCE THIS WAS UNCONTROLLED AIRSPACE, THE ONLY OPTION FOR SEPARATION IS SEE AND AVOID, WHICH WE DID. THE FLOOR OF THE DENVER TCA IN THIS AREA IS 7000 MSL. I WAS AWARE OF THIS AND NEVER PENETRATED THE TCA. I THINK THAT THE PRIMARY CAUSE FOR THE OCCURRENCE WAS SIMPLY THE SEE AND AVOID CONCEPT. I REALIZE IT IS THE ONLY WAY TO REMAIN SEPARATED IN UNCONTROLLED AIRSPACE AND BELOW 3000' AGL, BUT IT CAN BE VERY DANGEROUS.

Data retrieved from NASA's ASRS site as of August 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.