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Air carrier flight crew in foreign airspace take evasive climb action when receiving TCASII TA RA. Controller only acknowledges russian aircraft is at FL210.
| Attributes | |
| ACN | 419572 |
| Time | |
| Date | 199811 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : str |
| State Reference | FO |
| Altitude | msl bound lower : 20000 msl bound upper : 24000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Route In Use | departure other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : flight engineer pilot : cfi pilot : commercial |
| Experience | flight time last 90 days : 199 flight time total : 25000 flight time type : 199 |
| ASRS Report | 419572 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Consequence | Other |
| Miss Distance | horizontal : 30000 vertical : 1000 |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
(Our aircraft) was cleared to climb to FL220. When passing through FL200 the TCASII alert system issued a TA. The TA status immediately changed to an RA alert. I elected, due to high vertical speed, to continue an accelerated climb to FL240 with a northwesterly heading change to avoid the aircraft on converging airways. First officer warned radar control of convergent traffic situation as well as the eventual near miss situation. Radar control acknowledgment of russian aircraft clear of us at FL210 and immediately reclred (our aircraft) to FL240 and subsequently cleared and climbed to FL310. Radar control made no comments in regards to this situation, and immediately after clearing us to FL310, cleared us to another radar control frequency. Relief pilot made a PA to the passenger and explained the situation completely. We then proceeded to kcvg with no further complications.
Original NASA ASRS Text
Title: ACR FLC IN FOREIGN AIRSPACE TAKE EVASIVE CLB ACTION WHEN RECEIVING TCASII TA RA. CTLR ONLY ACKNOWLEDGES RUSSIAN ACFT IS AT FL210.
Narrative: (OUR ACFT) WAS CLRED TO CLB TO FL220. WHEN PASSING THROUGH FL200 THE TCASII ALERT SYS ISSUED A TA. THE TA STATUS IMMEDIATELY CHANGED TO AN RA ALERT. I ELECTED, DUE TO HIGH VERT SPD, TO CONTINUE AN ACCELERATED CLB TO FL240 WITH A NORTHWESTERLY HDG CHANGE TO AVOID THE ACFT ON CONVERGING AIRWAYS. FO WARNED RADAR CTL OF CONVERGENT TFC SIT AS WELL AS THE EVENTUAL NEAR MISS SIT. RADAR CTL ACKNOWLEDGMENT OF RUSSIAN ACFT CLR OF US AT FL210 AND IMMEDIATELY RECLRED (OUR ACFT) TO FL240 AND SUBSEQUENTLY CLRED AND CLBED TO FL310. RADAR CTL MADE NO COMMENTS IN REGARDS TO THIS SIT, AND IMMEDIATELY AFTER CLRING US TO FL310, CLRED US TO ANOTHER RADAR CTL FREQUENCY. RELIEF PLT MADE A PA TO THE PAX AND EXPLAINED THE SIT COMPLETELY. WE THEN PROCEEDED TO KCVG WITH NO FURTHER COMPLICATIONS.
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.