Possible near midair collision turned into a resolved conflict by TCASII RA.

Attributes
ACN	271862
Time
Date	199405
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : quv
State Reference	FO
Altitude	msl bound lower : 35000 msl bound upper : 37000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	cruise other
Route In Use	enroute : other oceanic enroute airway : ug23
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Route In Use	enroute : other oceanic
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : flight engineer pilot : commercial pilot : atp
Experience	flight time last 90 days : 200 flight time total : 6000 flight time type : 800
ASRS Report	271862
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 210 flight time total : 21217 flight time type : 4500
ASRS Report	271743
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance non adherence : far non adherence : published procedure other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 0 vertical : 1500
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Pilot Deviation Operational Error

Narrative:

I was flying the aircraft from the right seat as the relief first officer and the captain were changing seats. On the TCASII monitor, I noticed an aircraft at our altitude, 1-2 O'clock bearing, 10-20 mi away. The aircraft remained at the constant bearing, decreasing range. I visually acquired the aircraft at approximately 3-5 mi, and initiated a climb as the TCASII advisory sounded. The controller then cleared me to FL370. We later learned that the other aircraft was a twin engine passenger jet. I believe the controller made a mistake. Supplemental information from acn 271743: barcelona failed to separate both at FL350 verso int. Observed on TCASII at 350 initiated a climb to 370, thus, resolving confliction. Barcelona ATC failed to issue traffic.

Original NASA ASRS Text

Title: POSSIBLE NMAC TURNED INTO A RESOLVED CONFLICT BY TCASII RA.

Narrative: I WAS FLYING THE ACFT FROM THE R SEAT AS THE RELIEF FO AND THE CAPT WERE CHANGING SEATS. ON THE TCASII MONITOR, I NOTICED AN ACFT AT OUR ALT, 1-2 O'CLOCK BEARING, 10-20 MI AWAY. THE ACFT REMAINED AT THE CONSTANT BEARING, DECREASING RANGE. I VISUALLY ACQUIRED THE ACFT AT APPROX 3-5 MI, AND INITIATED A CLB AS THE TCASII ADVISORY SOUNDED. THE CTLR THEN CLRED ME TO FL370. WE LATER LEARNED THAT THE OTHER ACFT WAS A TWIN ENG PAX JET. I BELIEVE THE CTLR MADE A MISTAKE. SUPPLEMENTAL INFO FROM ACN 271743: BARCELONA FAILED TO SEPARATE BOTH AT FL350 VERSO INT. OBSERVED ON TCASII AT 350 INITIATED A CLB TO 370, THUS, RESOLVING CONFLICTION. BARCELONA ATC FAILED TO ISSUE TFC.

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.