 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
B737 at FL410 with port au prince ATC experienced TCAS RA with traffic at same altitude; controller indicated no traffic was at the subject altitude.
| Attributes | |
| ACN | 720570 |
| Time | |
| Date | 200612 |
| Place | |
| Locale Reference | atc facility : mteg.artcc |
| State Reference | FO |
| Altitude | msl single value : 41000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : mteg.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| ASRS Report | 720570 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | conflict : airborne critical non adherence : required legal separation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Miss Distance | vertical : 1000 |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | Ambiguous |
| Air Traffic Incident | Operational Error |
Narrative:
At FL410 in vicinity of vetmo noticed traffic ahead at FL410 visually and on TCAS. Asked port au prince and they said there was no traffic at FL410. Got TA followed by RA. Responded to RA and passed 1000 ft below the traffic. We told port au prince there in fact was traffic at FL410 and returned to FL410.
Original NASA ASRS Text
Title: B737 AT FL410 WITH PORT AU PRINCE ATC EXPERIENCED TCAS RA WITH TFC AT SAME ALT; CTLR INDICATED NO TFC WAS AT THE SUBJECT ALT.
Narrative: AT FL410 IN VICINITY OF VETMO NOTICED TFC AHEAD AT FL410 VISUALLY AND ON TCAS. ASKED PORT AU PRINCE AND THEY SAID THERE WAS NO TFC AT FL410. GOT TA FOLLOWED BY RA. RESPONDED TO RA AND PASSED 1000 FT BELOW THE TFC. WE TOLD PORT AU PRINCE THERE IN FACT WAS TFC AT FL410 AND RETURNED TO FL410.
Data retrieved from NASA's ASRS site as of January 2009 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.