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Reporter suspected possible mix-up in control instructions caused controller to vector another aircraft to avoid a conflict.
| Attributes | |
| ACN | 119427 |
| Time | |
| Date | 198908 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : den |
| State Reference | CO |
| Altitude | msl bound lower : 8000 msl bound upper : 9000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : den |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | climbout : initial climbout : takeoff |
| Route In Use | departure other enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | climbout : initial climbout : takeoff |
| Route In Use | departure other enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : flight engineer pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 200 flight time total : 8000 flight time type : 1500 |
| ASRS Report | 119427 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | other anomaly other other spatial deviation |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance |
| Consequence | Other |
| Miss Distance | horizontal : 10000 vertical : 1000 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Deviation other |
Narrative:
Tower issued takeoff clearance on runway 35L at den, 'turn right heading 010 degrees.' PNF read back clearance including heading. At some time previously an large transport had been issued a takeoff clearance off of runway 35R with the same heading of 010 degrees. At about 8000' we contacted departure control and were told about traffic at 11:30-12 O'clock, 1-2 mi, an large transport, and told to maintain 9000', airspeed of 210 KTS. We told departure that we had the aircraft in sight below us. He then issued a clearance for the large transport ahead of us to turn right to a heading of about 090 degrees, which he did while continuing his climb to 10000'. After the large transport was clear of us to the east, we were told to climb to 10000'. We suspect that our heading after takeoff should have been runway heading about 350 degrees or our takeoff should have been delayed a little longer to provide better spacing with the traffic taking off from the right runway.
Original NASA ASRS Text
Title: REPORTER SUSPECTED POSSIBLE MIX-UP IN CTL INSTRUCTIONS CAUSED CTLR TO VECTOR ANOTHER ACFT TO AVOID A CONFLICT.
Narrative: TWR ISSUED TKOF CLRNC ON RWY 35L AT DEN, 'TURN RIGHT HDG 010 DEGS.' PNF READ BACK CLRNC INCLUDING HDG. AT SOME TIME PREVIOUSLY AN LGT HAD BEEN ISSUED A TKOF CLRNC OFF OF RWY 35R WITH THE SAME HDG OF 010 DEGS. AT ABOUT 8000' WE CONTACTED DEP CTL AND WERE TOLD ABOUT TFC AT 11:30-12 O'CLOCK, 1-2 MI, AN LGT, AND TOLD TO MAINTAIN 9000', AIRSPD OF 210 KTS. WE TOLD DEP THAT WE HAD THE ACFT IN SIGHT BELOW US. HE THEN ISSUED A CLRNC FOR THE LGT AHEAD OF US TO TURN RIGHT TO A HDG OF ABOUT 090 DEGS, WHICH HE DID WHILE CONTINUING HIS CLB TO 10000'. AFTER THE LGT WAS CLR OF US TO THE E, WE WERE TOLD TO CLB TO 10000'. WE SUSPECT THAT OUR HDG AFTER TKOF SHOULD HAVE BEEN RWY HDG ABOUT 350 DEGS OR OUR TKOF SHOULD HAVE BEEN DELAYED A LITTLE LONGER TO PROVIDE BETTER SPACING WITH THE TFC TAKING OFF FROM THE RIGHT RWY.
Data retrieved from NASA's ASRS site as of August 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.