TCASII on uncontrolled aircraft which made repeated passes on reporter aircraft. Apparently not near midair collision, but harassment by intruder aircraft.

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Attributes
ACN	327587
Time
Date	199602
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : abq
State Reference	NM
Altitude	msl bound lower : 7500 msl bound upper : 7500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : abq
Operator	other
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Flight Plan	None
Aircraft 2
Operator	general aviation : personal
Make Model Name	Bonanza 35
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Flight Plan	None
Person 1
Affiliation	government other
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
ASRS Report	327587
Person 2
Affiliation	government other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	327886
Events
Anomaly	conflict : airborne less severe other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : unable
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

We were flying a survey mission over rio rancho for customer when we received a TCASII alert for traffic behind us. Approach control also notified us of the traffic. There was no altitude reported for that aircraft. I then saw the aircraft out the right window just below us, passing under our wing. He climbed slightly and appeared to be turning to the right. We turned left to avoid him, as we turned back to continue our mission and saw him turning toward us again. The bonanza continued to chase us through two more avoidance turns until we decided to abort the mission and return to abq.

Original NASA ASRS Text

Title: TCASII ON UNCTLED ACFT WHICH MADE REPEATED PASSES ON RPTR ACFT. APPARENTLY NOT NMAC, BUT HARASSMENT BY INTRUDER ACFT.

Narrative: WE WERE FLYING A SURVEY MISSION OVER RIO RANCHO FOR CUSTOMER WHEN WE RECEIVED A TCASII ALERT FOR TFC BEHIND US. APCH CTL ALSO NOTIFIED US OF THE TFC. THERE WAS NO ALT RPTED FOR THAT ACFT. I THEN SAW THE ACFT OUT THE R WINDOW JUST BELOW US, PASSING UNDER OUR WING. HE CLBED SLIGHTLY AND APPEARED TO BE TURNING TO THE R. WE TURNED L TO AVOID HIM, AS WE TURNED BACK TO CONTINUE OUR MISSION AND SAW HIM TURNING TOWARD US AGAIN. THE BONANZA CONTINUED TO CHASE US THROUGH TWO MORE AVOIDANCE TURNS UNTIL WE DECIDED TO ABORT THE MISSION AND RETURN TO ABQ.

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.