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An A310 cleared to track a VOR radial from the runway; attempted to turn to the VOR prior to tracking when the FMS's manually programmed departure was activated after takeoff.
| Attributes | |
| ACN | 705445 |
| Time | |
| Date | 200608 |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzzz.airport |
| State Reference | FO |
| Altitude | agl bound lower : 50 agl bound upper : 500 |
| Environment | |
| Flight Conditions | VMC |
| Weather Elements | Rain |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tower : zzz.tower |
| Operator | common carrier : air carrier |
| Make Model Name | A300 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : takeoff |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 25 flight time total : 15000 flight time type : 950 |
| ASRS Report | 705445 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : clearance other spatial deviation |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : regained aircraft control flight crew : overrode automation |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Aircraft |
| Primary Problem | Aircraft |
Narrative:
Departure clearance was to track out on the abc 266 degree radial off of runway 26R. We inserted the radial into the FMS. At liftoff; first officer flying command bars directed a right turn. Within less than 5 seconds we realized this could not be right. Should have been runway (close to) centerline. First officer began a correction to the left same time tower instructed a left turn to heading 270 degrees. The tower was asking us what happened and thought we were trying to intercept a radial off of cde; not abc. We confirmed we had abc; and later realized the FMS was turning towards abc behind us; not the 266 degree radial away from abc. There were no conflicts; or TCAS; GPWS warnings. Lesson learned here would be to simply use the VOR raw data; not the FMS.
Original NASA ASRS Text
Title: AN A310 CLRED TO TRACK A VOR RADIAL FROM THE RWY; ATTEMPTED TO TURN TO THE VOR PRIOR TO TRACKING WHEN THE FMS'S MANUALLY PROGRAMMED DEP WAS ACTIVATED AFTER TKOF.
Narrative: DEP CLRNC WAS TO TRACK OUT ON THE ABC 266 DEG RADIAL OFF OF RWY 26R. WE INSERTED THE RADIAL INTO THE FMS. AT LIFTOFF; FO FLYING COMMAND BARS DIRECTED A R TURN. WITHIN LESS THAN 5 SECONDS WE REALIZED THIS COULD NOT BE RIGHT. SHOULD HAVE BEEN RWY (CLOSE TO) CTRLINE. FO BEGAN A CORRECTION TO THE L SAME TIME TWR INSTRUCTED A L TURN TO HDG 270 DEGS. THE TWR WAS ASKING US WHAT HAPPENED AND THOUGHT WE WERE TRYING TO INTERCEPT A RADIAL OFF OF CDE; NOT ABC. WE CONFIRMED WE HAD ABC; AND LATER REALIZED THE FMS WAS TURNING TOWARDS ABC BEHIND US; NOT THE 266 DEG RADIAL AWAY FROM ABC. THERE WERE NO CONFLICTS; OR TCAS; GPWS WARNINGS. LESSON LEARNED HERE WOULD BE TO SIMPLY USE THE VOR RAW DATA; NOT THE FMS.
Data retrieved from NASA's ASRS site as of January 2009 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.