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An large transport aircraft begins turn on course shortly after takeoff when tower calls and tells them to maintain runway heading for departure. The runway heading was not mentioned in their predep clearance.
| Attributes | |
| ACN | 357524 |
| Time | |
| Date | 199701 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : okc |
| State Reference | OK |
| Altitude | agl bound lower : 400 agl bound upper : 400 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : okc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : takeoff climbout : initial |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 100 flight time total : 7000 flight time type : 2000 |
| ASRS Report | 357524 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : commercial pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 9500 flight time type : 420 |
| ASRS Report | 357850 |
| Events | |
| Anomaly | other anomaly other other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
Clearance delivery issued clearance for flight xx to den as (maintain 5000 ft expect FL260 10 mins after takeoff heading 310 degrees departure control 124.6 transponder KKKK). We were issued takeoff clearance by tower for runway 35R, started a left hand turn toward 310 degree heading. After turn was started tower told us to maintain runway heading. Supplemental information from acn 357850: after takeoff on runway 35R about 400 ft the PF started to turn to 310 degree heading. As the turn was started tower told us to maintain runway heading and told us that another aircraft had also just taken off from runway 35L. We were not originally issued a runway heading after takeoff, before takeoff. The problem could be prevented in the future by staggering departures so no conflict could arise, no matter what heading any 2 aircraft may take.
Original NASA ASRS Text
Title: AN LGT ACFT BEGINS TURN ON COURSE SHORTLY AFTER TKOF WHEN TWR CALLS AND TELLS THEM TO MAINTAIN RWY HEADING FOR DEP. THE RWY HEADING WAS NOT MENTIONED IN THEIR PREDEP CLRNC.
Narrative: CLRNC DELIVERY ISSUED CLRNC FOR FLT XX TO DEN AS (MAINTAIN 5000 FT EXPECT FL260 10 MINS AFTER TKOF HDG 310 DEGS DEP CTL 124.6 XPONDER KKKK). WE WERE ISSUED TKOF CLRNC BY TWR FOR RWY 35R, STARTED A L HAND TURN TOWARD 310 DEG HDG. AFTER TURN WAS STARTED TWR TOLD US TO MAINTAIN RWY HEADING. SUPPLEMENTAL INFO FROM ACN 357850: AFTER TKOF ON RWY 35R ABOUT 400 FT THE PF STARTED TO TURN TO 310 DEG HDG. AS THE TURN WAS STARTED TWR TOLD US TO MAINTAIN RWY HEADING AND TOLD US THAT ANOTHER ACFT HAD ALSO JUST TAKEN OFF FROM RWY 35L. WE WERE NOT ORIGINALLY ISSUED A RWY HEADING AFTER TKOF, BEFORE TKOF. THE PROB COULD BE PREVENTED IN THE FUTURE BY STAGGERING DEPS SO NO CONFLICT COULD ARISE, NO MATTER WHAT HDG ANY 2 ACFT MAY TAKE.
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.