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Air carrier cleared to climb through airspace occupied by another aircraft in foreign airspace. TCASII gives adequate warning.
| Attributes | |
| ACN | 457690 |
| Time | |
| Date | 199912 |
| Day | Mon |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | intersection : lixas |
| State Reference | FO |
| Altitude | msl single value : 3500 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B767 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | B767 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | cruise : enroute altitude change |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : multi engine |
| ASRS Report | 457690 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : commercial pilot : instrument pilot : multi engine |
| ASRS Report | 457495 |
| Events | |
| Anomaly | conflict : airborne critical non adherence : required legal separation |
| Independent Detector | aircraft equipment : tcas other flight crewa other flight crewb |
| Resolutory Action | flight crew : took evasive action |
| Miss Distance | horizontal : 0 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Northbound on UG436, TCASII announced 'traffic.' showed a yellow target directly ahead of us at 40 mi. Traffic was 200 ft below us and climbing. We monitored the traffic's climb and at 10 mi range directly in front of us, his altitude was the same as ours. TCASII issued an RA warning and commanded an 1800 FPM 'descend now.' I disconnected autoplt and descended as directed and observed large jet passing close overhead. TCASII advised, 'clear of conflict.' contacted guayaquil and they advised 'roger.' talked on common radio frequency to aircraft Y. They were sbound on same airway. Advised were complying with a clearance to climb from FL330 to FL370.
Original NASA ASRS Text
Title: ACR CLRED TO CLB THROUGH AIRSPACE OCCUPIED BY ANOTHER ACFT IN FOREIGN AIRSPACE. TCASII GIVES ADEQUATE WARNING.
Narrative: NBOUND ON UG436, TCASII ANNOUNCED 'TFC.' SHOWED A YELLOW TARGET DIRECTLY AHEAD OF US AT 40 MI. TFC WAS 200 FT BELOW US AND CLBING. WE MONITORED THE TFC'S CLB AND AT 10 MI RANGE DIRECTLY IN FRONT OF US, HIS ALT WAS THE SAME AS OURS. TCASII ISSUED AN RA WARNING AND COMMANDED AN 1800 FPM 'DSND NOW.' I DISCONNECTED AUTOPLT AND DSNDED AS DIRECTED AND OBSERVED LARGE JET PASSING CLOSE OVERHEAD. TCASII ADVISED, 'CLR OF CONFLICT.' CONTACTED GUAYAQUIL AND THEY ADVISED 'ROGER.' TALKED ON COMMON RADIO FREQ TO ACFT Y. THEY WERE SBOUND ON SAME AIRWAY. ADVISED WERE COMPLYING WITH A CLRNC TO CLB FROM FL330 TO FL370.
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.