near midair collision

Attributes
ACN	278550
Time
Date	199407
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : cak
State Reference	OH
Altitude	msl bound lower : 3000 msl bound upper : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : cak
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	descent : approach descent other
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	other : unknown
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 300 flight time total : 7000 flight time type : 300
ASRS Report	278550
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	conflict : nmac non adherence : far other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action flight crew : returned to intended course or assigned course
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Flight ay pij direct cak. We flew en route to cak at 8000 ft MSL. Cak approach kept us at 6000 ft MSL due to crossing traffic. Finally, about 5-6 mi south of cak we were cleared to descend for a visual straight-in approach and to contact tower. Just after contacting tower and while in a high-rate descent, we were advised of a non mode-C VFR aircraft converging on our approach path (from west to east). We were passing through approximately 3000 ft MSL and saw the light blue high wing single engine as it was in an evasive turn (right). We could not alter our descent and it seemed the most expeditious action to clear his flight path by descending rapidly. He appeared to be in the control zone and was not talking to cak approach or tower. We had a follow-up conversation with cak tower and they said they were going to track the unknown aircraft and determine if it had properly flown in the cak airspace.

Original NASA ASRS Text

Title: NMAC

Narrative: FLT AY PIJ DIRECT CAK. WE FLEW ENRTE TO CAK AT 8000 FT MSL. CAK APCH KEPT US AT 6000 FT MSL DUE TO XING TFC. FINALLY, ABOUT 5-6 MI S OF CAK WE WERE CLRED TO DSND FOR A VISUAL STRAIGHT-IN APCH AND TO CONTACT TWR. JUST AFTER CONTACTING TWR AND WHILE IN A HIGH-RATE DSCNT, WE WERE ADVISED OF A NON MODE-C VFR ACFT CONVERGING ON OUR APCH PATH (FROM W TO E). WE WERE PASSING THROUGH APPROX 3000 FT MSL AND SAW THE LIGHT BLUE HIGH WING SINGLE ENG AS IT WAS IN AN EVASIVE TURN (R). WE COULD NOT ALTER OUR DSCNT AND IT SEEMED THE MOST EXPEDITIOUS ACTION TO CLR HIS FLT PATH BY DSNDING RAPIDLY. HE APPEARED TO BE IN THE CTL ZONE AND WAS NOT TALKING TO CAK APCH OR TWR. WE HAD A FOLLOW-UP CONVERSATION WITH CAK TWR AND THEY SAID THEY WERE GOING TO TRACK THE UNKNOWN ACFT AND DETERMINE IF IT HAD PROPERLY FLOWN IN THE CAK AIRSPACE.

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.

Near midair collision