<< >> NASA ASRS Report 243535, June 1993

Aircraft Y unauthorized penetration of airspace. Proximity of arsa. Had near midair collision with aircraft X. Pilot deviation.

Attributes
ACN	243535
Time
Date	199306
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : pdx
State Reference	OR
Altitude	msl bound lower : 4100 msl bound upper : 4100
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : pdx
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	descent : approach
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Experience	controller radar : 15
ASRS Report	243535
Person 2
Function	flight crew : single pilot
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
Consequence	Other
Miss Distance	horizontal : 100 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Aircraft X was on a vector near ttd airport for an approach to pdx. As aircraft X was given a vector to final, the aircraft X stated they had just had a near miss. After the report I observed a non mode C transponder target Y in close proximity to the aircraft X and troutdale airport.

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Original NASA ASRS Text

Title: ACFT Y UNAUTH PENETRATION OF AIRSPACE. PROX OF ARSA. HAD NMAC WITH ACFT X. PLTDEV.

Narrative: ACFT X WAS ON A VECTOR NEAR TTD ARPT FOR AN APCH TO PDX. AS ACFT X WAS GIVEN A VECTOR TO FINAL, THE ACFT X STATED THEY HAD JUST HAD A NEAR MISS. AFTER THE RPT I OBSERVED A NON MODE C XPONDER TARGET Y IN CLOSE PROX TO THE ACFT X AND TROUTDALE ARPT.

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.