Narrative:

We had a near midair collision with another aircraft over sulal. I took the aircraft off the autoplt and started a hard left turn. The other aircraft then passed left to right very close to our right wing. Magadon ATC told us the other aircraft was a russian IL62 level at our altitude of 10600 meters. There was no TCASII traffic or warning. There was no passenger injury or aircraft damage. Supplemental information from acn 315935: flying in russian airspace at 10600 meters. Flying south on B337 over sulal intersection we had a very near miss with a russian IL62 airliner. We were both under ATC control and cruising at 10600 meters both crossing sulal at XX44Z. We were on an approximately 220 degree heading. The IL62 was on about a 340 degree heading. We saw the IL62 about 2-3 seconds before the potential collision and made a hard left turn. We missed by less than 1000 ft. We had no TCASII warning. We would have collided without the turn. Supplemental information from acn 317656: on duty captain and first officer observed (simultaneously) traffic approaching rapidly from left (about 45 degrees) at same altitude. Captain immediately manually commenced hard left roll to 30 degree or 35 degree bank angle. While in this altitude, IL62 crossed in front of our aircraft 500-600 ft ahead at altitude. Our aircraft experienced brief moderate turbulence. Verbal exchange in russian (very spirited) between (quite evidently) IL62 captain and ATC controller, as well as controller response to queries, leads us to believe this was an ATC error. Initial investigation indicates likely controller error (no TCASII alert due incomparability of equipment). Recommendations: installation of comparable auxiliary transponder in either united states aircraft flying over siberia or in russian aircraft within russia. I understand that 3000 transponder previously removed from air carrier aircraft are available. Callback conversation with reporter of acn 316035 revealed the following information: reporter indicates that subsequent investigation revealed that the controller error was the cause of the near midair collision less than standard separation. He stated that the controller was aware of the conflict and attempted to climb the IL62 to a higher altitude but the flight crew were unable to accept the altitude. The reporter indicated that the controller did nothing else to prevent the conflict. When asked by analyst if they were under radar controller, reporter said no. He indicated that russian aircraft operate appropriate TCASII equipment on international rtes and not domestically.

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Original NASA ASRS Text

Title: OPERROR NMAC LTSS INVOLVING ACR X AND ACR Y ON CONVERGING-XING COURSES AT THE SAME ALT.

Narrative: WE HAD A NMAC WITH ANOTHER ACFT OVER SULAL. I TOOK THE ACFT OFF THE AUTOPLT AND STARTED A HARD L TURN. THE OTHER ACFT THEN PASSED L TO R VERY CLOSE TO OUR R WING. MAGADON ATC TOLD US THE OTHER ACFT WAS A RUSSIAN IL62 LEVEL AT OUR ALT OF 10600 METERS. THERE WAS NO TCASII TFC OR WARNING. THERE WAS NO PAX INJURY OR ACFT DAMAGE. SUPPLEMENTAL INFO FROM ACN 315935: FLYING IN RUSSIAN AIRSPACE AT 10600 METERS. FLYING S ON B337 OVER SULAL INTXN WE HAD A VERY NEAR MISS WITH A RUSSIAN IL62 AIRLINER. WE WERE BOTH UNDER ATC CTL AND CRUISING AT 10600 METERS BOTH XING SULAL AT XX44Z. WE WERE ON AN APPROX 220 DEG HDG. THE IL62 WAS ON ABOUT A 340 DEG HDG. WE SAW THE IL62 ABOUT 2-3 SECONDS BEFORE THE POTENTIAL COLLISION AND MADE A HARD L TURN. WE MISSED BY LESS THAN 1000 FT. WE HAD NO TCASII WARNING. WE WOULD HAVE COLLIDED WITHOUT THE TURN. SUPPLEMENTAL INFO FROM ACN 317656: ON DUTY CAPT AND FO OBSERVED (SIMULTANEOUSLY) TFC APCHING RAPIDLY FROM L (ABOUT 45 DEGS) AT SAME ALT. CAPT IMMEDIATELY MANUALLY COMMENCED HARD L ROLL TO 30 DEG OR 35 DEG BANK ANGLE. WHILE IN THIS ALT, IL62 CROSSED IN FRONT OF OUR ACFT 500-600 FT AHEAD AT ALT. OUR ACFT EXPERIENCED BRIEF MODERATE TURB. VERBAL EXCHANGE IN RUSSIAN (VERY SPIRITED) BTWN (QUITE EVIDENTLY) IL62 CAPT AND ATC CTLR, AS WELL AS CTLR RESPONSE TO QUERIES, LEADS US TO BELIEVE THIS WAS AN ATC ERROR. INITIAL INVESTIGATION INDICATES LIKELY CTLR ERROR (NO TCASII ALERT DUE INCOMPARABILITY OF EQUIP). RECOMMENDATIONS: INSTALLATION OF COMPARABLE AUX XPONDER IN EITHER UNITED STATES ACFT FLYING OVER SIBERIA OR IN RUSSIAN ACFT WITHIN RUSSIA. I UNDERSTAND THAT 3000 XPONDER PREVIOUSLY REMOVED FROM ACR ACFT ARE AVAILABLE. CALLBACK CONVERSATION WITH RPTR OF ACN 316035 REVEALED THE FOLLOWING INFO: RPTR INDICATES THAT SUBSEQUENT INVESTIGATION REVEALED THAT THE CTLR ERROR WAS THE CAUSE OF THE NMAC LTSS. HE STATED THAT THE CTLR WAS AWARE OF THE CONFLICT AND ATTEMPTED TO CLB THE IL62 TO A HIGHER ALT BUT THE FLC WERE UNABLE TO ACCEPT THE ALT. THE RPTR INDICATED THAT THE CTLR DID NOTHING ELSE TO PREVENT THE CONFLICT. WHEN ASKED BY ANALYST IF THEY WERE UNDER RADAR CTLR, RPTR SAID NO. HE INDICATED THAT RUSSIAN ACFT OPERATE APPROPRIATE TCASII EQUIP ON INTL RTES AND NOT DOMESTICALLY.

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.