 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
A B738 crew, departing den to the south in an assigned turn to the west, observed another aircraft, a departure from the parallel, also turning wbound.
| Attributes | |
| ACN | 530222 |
| Time | |
| Date | 200110 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : den.airport |
| Altitude | agl single value : 400 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : den.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : takeoff climbout : initial |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : den.tower |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | climbout : initial |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : flight engineer pilot : instrument pilot : multi engine |
| Experience | flight time last 90 days : 50 flight time total : 8000 flight time type : 50 |
| ASRS Report | 530222 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | non adherence : published procedure other anomaly other |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance flight crew : took precautionary avoidance action |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | ATC Human Performance Airport Flight Crew Human Performance |
| Primary Problem | ATC Human Performance |
Narrative:
Tower assigned us a departure vector of 'turn right 270 degrees.' at 400 ft AGL after takeoff, we made the turn and also noticed another aircraft on our right taking off and turning west from the parallel (runway 17R?). We stayed visually separated from that aircraft by shallowing our turn. The tower controller then told us to turn 'right' to 260 degrees (after we were steady 270 degrees). We queried him whether our initial heading should have been 270 degrees (it seemed strange to us) and he said 'everything is okay, contact departure.' supplemental information from acn 530223: we queried the controller if he wanted a left turn to 260 degrees and asked if he had intended for us to turn to 270 degrees initially. His response was, 'no, everything is ok.' it is my belief that the controller intended to issue an initial clearance of 170 degrees, not 270 degrees. Fortunately, VFR prevailed and visual separation could be maintained.
Original NASA ASRS Text
Title: A B738 CREW, DEPARTING DEN TO THE S IN AN ASSIGNED TURN TO THE W, OBSERVED ANOTHER ACFT, A DEP FROM THE PARALLEL, ALSO TURNING WBOUND.
Narrative: TWR ASSIGNED US A DEP VECTOR OF 'TURN R 270 DEGS.' AT 400 FT AGL AFTER TKOF, WE MADE THE TURN AND ALSO NOTICED ANOTHER ACFT ON OUR R TAKING OFF AND TURNING W FROM THE PARALLEL (RWY 17R?). WE STAYED VISUALLY SEPARATED FROM THAT ACFT BY SHALLOWING OUR TURN. THE TWR CTLR THEN TOLD US TO TURN 'R' TO 260 DEGS (AFTER WE WERE STEADY 270 DEGS). WE QUERIED HIM WHETHER OUR INITIAL HEADING SHOULD HAVE BEEN 270 DEGS (IT SEEMED STRANGE TO US) AND HE SAID 'EVERYTHING IS OKAY, CONTACT DEP.' SUPPLEMENTAL INFO FROM ACN 530223: WE QUERIED THE CTLR IF HE WANTED A L TURN TO 260 DEGS AND ASKED IF HE HAD INTENDED FOR US TO TURN TO 270 DEGS INITIALLY. HIS RESPONSE WAS, 'NO, EVERYTHING IS OK.' IT IS MY BELIEF THAT THE CTLR INTENDED TO ISSUE AN INITIAL CLRNC OF 170 DEGS, NOT 270 DEGS. FORTUNATELY, VFR PREVAILED AND VISUAL SEPARATION COULD BE MAINTAINED.
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.