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Flight crew of a lockheed 1011 started turn after takeoff prior to reaching their after takeoff altitude clearance due to a misunderstanding of their clearance. Track heading deviation.
| Attributes | |
| ACN | 345650 |
| Time | |
| Date | 199608 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : yqx |
| State Reference | NF |
| Altitude | msl bound lower : 3000 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dawn |
| Aircraft 1 | |
| Controlling Facilities | tracon : yqx |
| Operator | common carrier : air carrier |
| Make Model Name | L-1011 Tri-Star All Series |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure other departure sid : sid enroute airway : yqx |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 194 flight time total : 16400 flight time type : 4650 |
| ASRS Report | 345650 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | non adherence : clearance other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Gander tower gave our clearance as: gander 4 departure, direct 50N/50W. Gander and departure says climb to 5000 ft, runway heading or as assigned. We understood our clearance allows us to turn direct to 50N/50W while maintaining 5000 ft. After takeoff, I called gander departure, while starting a 180 degree turn toward 50N/50W. The controller informed me that I should not have started turning until he had cleared us. I have flown through gander many, many times through the yrs and being cleared on course immediately after takeoff has been a common clearance. The terminology used by tower in our takeoff clearance was not standard, by united states standards, no heading was given, only a cleared to 50N/50W. The WX was good and there was no other traffic in the area so no conflicts occurred. In the future, I will confirm that we are actually cleared on course when tower gives me that clearance.
Original NASA ASRS Text
Title: FLC OF A LOCKHEED 1011 STARTED TURN AFTER TKOF PRIOR TO REACHING THEIR AFTER TKOF ALT CLRNC DUE TO A MISUNDERSTANDING OF THEIR CLRNC. TRACK HDG DEV.
Narrative: GANDER TWR GAVE OUR CLRNC AS: GANDER 4 DEP, DIRECT 50N/50W. GANDER AND DEP SAYS CLB TO 5000 FT, RWY HDG OR AS ASSIGNED. WE UNDERSTOOD OUR CLRNC ALLOWS US TO TURN DIRECT TO 50N/50W WHILE MAINTAINING 5000 FT. AFTER TKOF, I CALLED GANDER DEP, WHILE STARTING A 180 DEG TURN TOWARD 50N/50W. THE CTLR INFORMED ME THAT I SHOULD NOT HAVE STARTED TURNING UNTIL HE HAD CLRED US. I HAVE FLOWN THROUGH GANDER MANY, MANY TIMES THROUGH THE YRS AND BEING CLRED ON COURSE IMMEDIATELY AFTER TKOF HAS BEEN A COMMON CLRNC. THE TERMINOLOGY USED BY TWR IN OUR TKOF CLRNC WAS NOT STANDARD, BY UNITED STATES STANDARDS, NO HEADING WAS GIVEN, ONLY A CLRED TO 50N/50W. THE WX WAS GOOD AND THERE WAS NO OTHER TFC IN THE AREA SO NO CONFLICTS OCCURRED. IN THE FUTURE, I WILL CONFIRM THAT WE ARE ACTUALLY CLRED ON COURSE WHEN TWR GIVES ME THAT CLRNC.
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.