 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Air carrier finds themselves passing 2 mi from other aircraft when following departure controller instructions.
| Attributes | |
| ACN | 445049 |
| Time | |
| Date | 199908 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : atl.airport |
| State Reference | GA |
| Altitude | msl single value : 10000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : atl.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure sid : atl 4 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : multi engine pilot : instrument pilot : flight engineer pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 160 flight time total : 15160 flight time type : 2500 |
| ASRS Report | 445049 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : atp pilot : commercial pilot : flight engineer pilot : instrument |
| Experience | flight time last 90 days : 80 flight time total : 9400 flight time type : 900 |
| ASRS Report | 445201 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure non adherence : far |
| Independent Detector | aircraft equipment : tcas other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance controller : issued advisory |
| Miss Distance | horizontal : 12000 vertical : 0 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Departing atl on the atlanta 4 departure off runway 27R. After takeoff, departure instructed us to leveloff at 6000 ft for traffic. After leveloff we were given an unusual heading of 120 degrees vice the normal 180 degrees. We were then given a climb to 10000 ft. Before leveloff at 10000 ft, we were cleared to 14000 ft (3 times). Passing 10000 ft we passed 2 mi from another airliner. Not sure what happened here. I do not believe we took another aircraft's clearance or flew any incorrect headings or altitudes. Supplemental information from acn 445201: we were given vectors for the atlanta four departure. We were told to stop climb at 6000 ft MSL, which is unusual for this departure. It's normally 10000 ft or 14000 ft MSL. We were then cleared to 14000 ft MSL and a 120 degree heading, (also unusual). Going through 10000 ft MSL, we passed 2 NM in front of another airliner, who was also at 10000 ft MSL. Afterwards, a different controller came on. I believe this could have been avoided if we were either told to expedite our climb or given a different heading.
Original NASA ASRS Text
Title: ACR FINDS THEMSELVES PASSING 2 MI FROM OTHER ACFT WHEN FOLLOWING DEP CTLR INSTRUCTIONS.
Narrative: DEPARTING ATL ON THE ATLANTA 4 DEP OFF RWY 27R. AFTER TKOF, DEP INSTRUCTED US TO LEVELOFF AT 6000 FT FOR TFC. AFTER LEVELOFF WE WERE GIVEN AN UNUSUAL HEADING OF 120 DEGS VICE THE NORMAL 180 DEGS. WE WERE THEN GIVEN A CLB TO 10000 FT. BEFORE LEVELOFF AT 10000 FT, WE WERE CLRED TO 14000 FT (3 TIMES). PASSING 10000 FT WE PASSED 2 MI FROM ANOTHER AIRLINER. NOT SURE WHAT HAPPENED HERE. I DO NOT BELIEVE WE TOOK ANOTHER ACFT'S CLRNC OR FLEW ANY INCORRECT HEADINGS OR ALTS. SUPPLEMENTAL INFO FROM ACN 445201: WE WERE GIVEN VECTORS FOR THE ATLANTA FOUR DEP. WE WERE TOLD TO STOP CLB AT 6000 FT MSL, WHICH IS UNUSUAL FOR THIS DEP. IT'S NORMALLY 10000 FT OR 14000 FT MSL. WE WERE THEN CLRED TO 14000 FT MSL AND A 120 DEG HDG, (ALSO UNUSUAL). GOING THROUGH 10000 FT MSL, WE PASSED 2 NM IN FRONT OF ANOTHER AIRLINER, WHO WAS ALSO AT 10000 FT MSL. AFTERWARDS, A DIFFERENT CTLR CAME ON. I BELIEVE THIS COULD HAVE BEEN AVOIDED IF WE WERE EITHER TOLD TO EXPEDITE OUR CLB OR GIVEN A DIFFERENT HEADING.
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.