Less than standard separation with TCASII TA between a B-767 and an il-62 on A-699.

Attributes
ACN	264647
Time
Date	199402
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : pbi
State Reference	FL
Altitude	msl bound lower : 28000 msl bound upper : 29000
Environment
Flight Conditions	Mixed
Light	Night
Aircraft 1
Controlling Facilities	artcc : zny
Operator	common carrier : air carrier
Make Model Name	B767 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	cruise other
Route In Use	enroute : other oceanic enroute : atlantic enroute airway : a699 enroute other
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 : atlantic enroute : other oceanic enroute other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 200 flight time total : 5000 flight time type : 900
ASRS Report	264647
Person 2
Affiliation	company : air carrier
Function	other personnel other
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 150 flight time total : 4641 flight time type : 1333
ASRS Report	264509
Events
Anomaly	altitude deviation : overshoot conflict : ground less severe conflict : airborne less severe non adherence : required legal separation non adherence : clearance
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 3000 vertical : 500
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Air carrier X on the caribbean portion of a mia direct lhr flight encountered at FL290 an opposite direction air carrier Y at the same altitude. Immediately after a TCASII TA, the captain disengaged the autoplt and banked right and climbed approximately 400 ft. TCASII display indicated air carrier Y (il-62) descended approximately 10000. The first officer turned on the landing lights and a visual sighting was made by all 3 pilots in the cockpit of air carrier X. Ny radio arinc was notified by us of the traffic conflict on high frequency radio. We were informed by ny ATC via ny arinc air carrier Y was supposed to be at FL280. Our TCASII indication plus our visual sighting revealed air carrier Y was at FL290 and not FL280. Supplemental information from acn 264509: captain who was the PF disengaged the autoplt, banked right and climbed approximately 400 ft. TCASII showed the traffic descended approximately 1000 ft. After the conflict was resolved the captain returned the aircraft to assigned course and altitude. The first officer notified ny arinc with our position report. After checking with ny oceanic, ny arinc informed us that the traffic was air carrier Y, an il-62, assigned to FL280. When ny arinc contacted air carrier Y, they first denied seeing us and then confirmed they had seen us. The TCASII indicated air carrier Y was initially at FL290 versus their assigned FL280.

Original NASA ASRS Text

Title: LTSS WITH TCASII TA BTWN A B-767 AND AN IL-62 ON A-699.

Narrative: ACR X ON THE CARIBBEAN PORTION OF A MIA DIRECT LHR FLT ENCOUNTERED AT FL290 AN OPPOSITE DIRECTION ACR Y AT THE SAME ALT. IMMEDIATELY AFTER A TCASII TA, THE CAPT DISENGAGED THE AUTOPLT AND BANKED R AND CLBED APPROX 400 FT. TCASII DISPLAY INDICATED ACR Y (IL-62) DSNDED APPROX 10000. THE FO TURNED ON THE LNDG LIGHTS AND A VISUAL SIGHTING WAS MADE BY ALL 3 PLTS IN THE COCKPIT OF ACR X. NY RADIO ARINC WAS NOTIFIED BY US OF THE TFC CONFLICT ON HIGH FREQ RADIO. WE WERE INFORMED BY NY ATC VIA NY ARINC ACR Y WAS SUPPOSED TO BE AT FL280. OUR TCASII INDICATION PLUS OUR VISUAL SIGHTING REVEALED ACR Y WAS AT FL290 AND NOT FL280. SUPPLEMENTAL INFO FROM ACN 264509: CAPT WHO WAS THE PF DISENGAGED THE AUTOPLT, BANKED R AND CLBED APPROX 400 FT. TCASII SHOWED THE TFC DSNDED APPROX 1000 FT. AFTER THE CONFLICT WAS RESOLVED THE CAPT RETURNED THE ACFT TO ASSIGNED COURSE AND ALT. THE FO NOTIFIED NY ARINC WITH OUR POS RPT. AFTER CHKING WITH NY OCEANIC, NY ARINC INFORMED US THAT THE TFC WAS ACR Y, AN IL-62, ASSIGNED TO FL280. WHEN NY ARINC CONTACTED ACR Y, THEY FIRST DENIED SEEING US AND THEN CONFIRMED THEY HAD SEEN US. THE TCASII INDICATED ACR Y WAS INITIALLY AT FL290 VERSUS THEIR ASSIGNED FL280.

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.