Potential conflict sensed by TCASII. Flight crew deviation from ATC clearance.

Attributes
ACN	276712
Time
Date	199405
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : eug
State Reference	OR
Altitude	msl bound lower : 3000 msl bound upper : 3700
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : eug artcc : zob
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 135
Flight Phase	descent other
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	other : unknown
Flight Phase	cruise other
Flight Plan	VFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Experience	controller non radar : 5
ASRS Report	276712
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : clearance other anomaly other other spatial deviation
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	controller : issued new clearance flight crew : returned to intended course or assigned course flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 18000 vertical : 200
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

Air carrier medium large transport on descent to eugene, 3000 ft, heading 190 assigned. Aircraft advised they were responding to a TCASII RA. When asked to advise when returning to course. Air carrier advised they were returning at that time and asked about traffic at 3 O'clock and 3 mi. Only traffic ever observed in that direction was never closer than 6 mi.

Original NASA ASRS Text

Title: POTENTIAL CONFLICT SENSED BY TCASII. FLC DEV FROM ATC CLRNC.

Narrative: ACR MLG ON DSCNT TO EUGENE, 3000 FT, HDG 190 ASSIGNED. ACFT ADVISED THEY WERE RESPONDING TO A TCASII RA. WHEN ASKED TO ADVISE WHEN RETURNING TO COURSE. ACR ADVISED THEY WERE RETURNING AT THAT TIME AND ASKED ABOUT TFC AT 3 O'CLOCK AND 3 MI. ONLY TFC EVER OBSERVED IN THAT DIRECTION WAS NEVER CLOSER THAN 6 MI.

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.