Small aircraft saw and evaded an small transport in the vicinity of gll VOR.

Attributes
ACN	98373
Time
Date	198811
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : gll airport : gxy
State Reference	CO
Altitude	msl bound lower : 6000 msl bound upper : 6000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdv artcc : zny
Operator	general aviation : instructional
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 Turboprop Eng
Flight Phase	cruise other
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : atp pilot : cfi
Experience	flight time last 90 days : 120 flight time total : 2750 flight time type : 500
ASRS Report	98373
Person 2
Affiliation	government : faa
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : nmac non adherence : far other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 450 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Flying straight and level at 6000' MSL, observed a government small transport Y approaching from left rear quarter on a collision course. We broke to the right and avoided the other aircraft with closest distance less than 500'. Small transport Y continued to fly straight and level and did not appear to have seen our aircraft. This incident emphasizes need for see and avoid collision avoidance.

Original NASA ASRS Text

Title: SMA SAW AND EVADED AN SMT IN THE VICINITY OF GLL VOR.

Narrative: FLYING STRAIGHT AND LEVEL AT 6000' MSL, OBSERVED A GOV SMT Y APPROACHING FROM L REAR QUARTER ON A COLLISION COURSE. WE BROKE TO THE R AND AVOIDED THE OTHER ACFT WITH CLOSEST DISTANCE LESS THAN 500'. SMT Y CONTINUED TO FLY STRAIGHT AND LEVEL AND DID NOT APPEAR TO HAVE SEEN OUR ACFT. THIS INCIDENT EMPHASIZES NEED FOR SEE AND AVOID COLLISION AVOIDANCE.

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.