 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
After departing mdst and climbing to FL240, a B737 crew notice a company flight descending and shallowed their climb to remain clear.
| Attributes | |
| ACN | 588839 |
| Time | |
| Date | 200307 |
| Day | Mon |
| Place | |
| Locale Reference | atc facility : mdsd.artcc |
| State Reference | FO |
| Altitude | msl bound lower : 7000 msl bound upper : 10800 |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Controlling Facilities | artcc : mdsd.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure sid : reksa |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : mdsd.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 588839 |
| Person 2 | |
| Affiliation | company : air carrier government : faa |
| Events | |
| Anomaly | conflict : nmac non adherence : published procedure non adherence : required legal separation |
| Independent Detector | aircraft equipment : tcas other flight crewa other flight crewb other other : 3 |
| Resolutory Action | none taken : anomaly accepted |
| Miss Distance | vertical : 300 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
We departed sti on the reksa 2 departure. Cleared to 11000 ft, by puerto plata control. When approaching sgo VOR, controller cleared us to FL240. At the same time another aircraft was at 12000 ft about 3 mi north of sgo, heading south. It was then cleared to 7000 ft. We saw him on TCASII. He started a descent and we were still climbing through about 10800 ft cleared to FL240. We then saw him visually and shallowed our climb as he shallowed his descent. We then got a monitor vertical speed RA and passed approximately 300 ft under him. It wasn't a real problem due to TCASII and visual conditions. We were also talking to each other (the 2 flts). I think the controller confused our position, due to this being a non-radar environment. The controller apologized and admitted that it was his fault.
Original NASA ASRS Text
Title: AFTER DEPARTING MDST AND CLBING TO FL240, A B737 CREW NOTICE A COMPANY FLT DSNDING AND SHALLOWED THEIR CLB TO REMAIN CLR.
Narrative: WE DEPARTED STI ON THE REKSA 2 DEP. CLRED TO 11000 FT, BY PUERTO PLATA CTL. WHEN APCHING SGO VOR, CTLR CLRED US TO FL240. AT THE SAME TIME ANOTHER ACFT WAS AT 12000 FT ABOUT 3 MI N OF SGO, HEADING S. IT WAS THEN CLRED TO 7000 FT. WE SAW HIM ON TCASII. HE STARTED A DSCNT AND WE WERE STILL CLBING THROUGH ABOUT 10800 FT CLRED TO FL240. WE THEN SAW HIM VISUALLY AND SHALLOWED OUR CLB AS HE SHALLOWED HIS DSCNT. WE THEN GOT A MONITOR VERT SPD RA AND PASSED APPROX 300 FT UNDER HIM. IT WASN'T A REAL PROB DUE TO TCASII AND VISUAL CONDITIONS. WE WERE ALSO TALKING TO EACH OTHER (THE 2 FLTS). I THINK THE CTLR CONFUSED OUR POS, DUE TO THIS BEING A NON-RADAR ENVIRONMENT. THE CTLR APOLOGIZED AND ADMITTED THAT IT WAS HIS FAULT.
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.