37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Attributes | |
ACN | 790460 |
Time | |
Date | 200806 |
Local Time Of Day | 1801 To 2400 |
Place | |
Locale Reference | airport : las.airport |
State Reference | NV |
Altitude | msl single value : 9000 |
Aircraft 1 | |
Controlling Facilities | tracon : l30.tracon |
Operator | common carrier : air carrier |
Make Model Name | A320 |
Operating Under FAR Part | Part 121 |
Navigation In Use | other |
Flight Phase | climbout : intermediate altitude |
Route In Use | departure sid : shead5 |
Flight Plan | IFR |
Aircraft 2 | |
Make Model Name | Helicopter |
Person 1 | |
Affiliation | company : air carrier |
Function | flight crew : first officer |
Experience | flight time last 90 days : 185 flight time total : 12000 flight time type : 1200 |
ASRS Report | 790460 |
Person 2 | |
Affiliation | company : air carrier |
Function | flight crew : captain oversight : pic |
Experience | flight time last 90 days : 165 flight time total : 18250 flight time type : 700 |
ASRS Report | 790459 |
Events | |
Anomaly | conflict : airborne critical other spatial deviation |
Independent Detector | aircraft equipment : tcas other flight crewa other flight crewb |
Resolutory Action | none taken : anomaly accepted |
Supplementary | |
Problem Areas | Environmental Factor ATC Human Performance Aircraft |
Primary Problem | ATC Human Performance |
Narrative:
Departing runway 1R assigned heading 240 degree radar vectors shead departure. Asked by tower to maintain visual separation from preceding B737 that was also assigned a left turnout. That aircraft was not a factor and tower switched us over to departure as we were beginning our turn around 400 ft. I switched frequencys and before checking in we received a preventative TCAS RA to maintain vertical speed. Target was initially showing 100 ft below us at a range of 1-2 NM. We crossed over the top of the helicopter with him 300-400 ft below us. I passed the information along to departure who said he would let the tower know. We leveled off at 9000 ft and were assigned heading 220 degrees. Terrain ahead was in sight. Just as we received a predictive terrain alert 'caution terrain' we were given both a climb and turn clearance. I mentioned to the controller that we had gotten the terrain caution; but he didn't seem concerned. If this had occurred under IFR conditions; getting the terrain caution would not have been pleasant. A stuck microphone or frequency congestion would have made things even worse.
Original NASA ASRS Text
Title: A320 DEP FROM LAS EXPERIENCED TCAS RA WITH UNRPTED HELI FOLLOWED BY A TERRAIN WARNING EVENT.
Narrative: DEPARTING RWY 1R ASSIGNED HDG 240 DEG RADAR VECTORS SHEAD DEP. ASKED BY TWR TO MAINTAIN VISUAL SEPARATION FROM PRECEDING B737 THAT WAS ALSO ASSIGNED A L TURNOUT. THAT ACFT WAS NOT A FACTOR AND TWR SWITCHED US OVER TO DEP AS WE WERE BEGINNING OUR TURN AROUND 400 FT. I SWITCHED FREQS AND BEFORE CHKING IN WE RECEIVED A PREVENTATIVE TCAS RA TO MAINTAIN VERT SPD. TARGET WAS INITIALLY SHOWING 100 FT BELOW US AT A RANGE OF 1-2 NM. WE CROSSED OVER THE TOP OF THE HELI WITH HIM 300-400 FT BELOW US. I PASSED THE INFO ALONG TO DEP WHO SAID HE WOULD LET THE TWR KNOW. WE LEVELED OFF AT 9000 FT AND WERE ASSIGNED HDG 220 DEGS. TERRAIN AHEAD WAS IN SIGHT. JUST AS WE RECEIVED A PREDICTIVE TERRAIN ALERT 'CAUTION TERRAIN' WE WERE GIVEN BOTH A CLB AND TURN CLRNC. I MENTIONED TO THE CTLR THAT WE HAD GOTTEN THE TERRAIN CAUTION; BUT HE DIDN'T SEEM CONCERNED. IF THIS HAD OCCURRED UNDER IFR CONDITIONS; GETTING THE TERRAIN CAUTION WOULD NOT HAVE BEEN PLEASANT. A STUCK MIKE OR FREQ CONGESTION WOULD HAVE MADE THINGS EVEN WORSE.
Data retrieved from NASA's ASRS site as of May 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.