 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
EMB140 pilot observes traffic on TCAS and ceases climb just as TCAS RA sounds for descent and ATC issues descent clearance. Resulting separation is 1000 ft vertical.
| Attributes | |
| ACN | 712425 |
| Time | |
| Date | 200610 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : jfk.airport |
| State Reference | NY |
| Altitude | msl single value : 12600 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | EMB ERJ 140 ER&LR |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 712425 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | conflict : airborne less severe |
| Independent Detector | aircraft equipment : tcas other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : took precautionary avoidance action |
| Miss Distance | vertical : 1000 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
Narrative:
While climbing out of jfk with clearance to 11000 ft; switched frequencys; checked in; controller cleared us direct rbv and climb to 13000 ft; first officer repeated clearance. At about 12400 ft; saw traffic at 1 O'clock position; crossing our flight path; TCAS showed it level 13000 ft at about 6 mi; leveled at about 12600 ft and got a traffic alert from TCAS. I asked first officer to check with ATC about traffic when ATC said 'air carrier Y expedite climb through 14000' followed shortly by 'air carrier X descend immediately to 12000.' I started descent; first officer repeated clearance; and reported traffic in sight. I was in descent when we got a descend RA. We leveled at 12000 ft; cleared the traffic by 1000 ft vertical separation; and continued our flight.
Original NASA ASRS Text
Title: EMB140 PLT OBSERVES TFC ON TCAS AND CEASES CLB JUST AS TCAS RA SOUNDS FOR DSCNT AND ATC ISSUES DSCNT CLRNC. RESULTING SEPARATION IS 1000 FT VERT.
Narrative: WHILE CLBING OUT OF JFK WITH CLRNC TO 11000 FT; SWITCHED FREQS; CHKED IN; CTLR CLRED US DIRECT RBV AND CLB TO 13000 FT; FO REPEATED CLRNC. AT ABOUT 12400 FT; SAW TFC AT 1 O'CLOCK POS; XING OUR FLT PATH; TCAS SHOWED IT LEVEL 13000 FT AT ABOUT 6 MI; LEVELED AT ABOUT 12600 FT AND GOT A TFC ALERT FROM TCAS. I ASKED FO TO CHK WITH ATC ABOUT TFC WHEN ATC SAID 'ACR Y EXPEDITE CLB THROUGH 14000' FOLLOWED SHORTLY BY 'ACR X DSND IMMEDIATELY TO 12000.' I STARTED DSCNT; FO REPEATED CLRNC; AND RPTED TFC IN SIGHT. I WAS IN DSCNT WHEN WE GOT A DSND RA. WE LEVELED AT 12000 FT; CLRED THE TFC BY 1000 FT VERT SEPARATION; AND CONTINUED OUR FLT.
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.