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B727 cargo first officer turned early on SID turn during departure resulting almost creating a conflict with another aircraft.
| Attributes | |
| ACN | 533406 |
| Time | |
| Date | 200112 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sea.airport |
| State Reference | WA |
| Altitude | msl single value : 9000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : s46.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B727-200 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | climbout : initial |
| Route In Use | departure sid : summa 6 |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : s46.tracon |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : flight engineer pilot : commercial pilot : cfi pilot : atp pilot : instrument |
| Experience | flight time last 90 days : 85 flight time total : 4800 flight time type : 1600 |
| ASRS Report | 533406 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : multi engine pilot : instrument pilot : flight engineer pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 50 flight time total : 6000 flight time type : 4000 |
| ASRS Report | 533405 |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : published procedure other spatial deviation |
| Independent Detector | aircraft equipment other aircraft equipment : vor nav indicators other controllera |
| Resolutory Action | controller : issued alert flight crew : returned to intended or assigned course |
| Consequence | faa : reviewed incident with flight crew other |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Takeoff from runway 34R sea and assigned the summa 6 departure. Problem occurred when we were turning to a 165 degree heading to intercept the 146 degree radial off of sea to summa intersection. My CDI needle was showing a quick movement towards center. ATC asked us about the turn, specifically what VOR and radial we were on. He stated that we were 1 1/2 mi too early. This occurred while I was turning from a 70 degree heading a 165 degree heading as stated above. On the ground in sea, my crew noticed a 4 to 5 degree difference between the captain's and first officer's RMI needles as they were both tuned to sea VOR. A possible investigation of the RMI needle difference could have contributed to the problem.
Original NASA ASRS Text
Title: B727 CARGO FO TURNED EARLY ON SID TURN DURING DEP RESULTING ALMOST CREATING A CONFLICT WITH ANOTHER ACFT.
Narrative: TKOF FROM RWY 34R SEA AND ASSIGNED THE SUMMA 6 DEPARTURE. PROB OCCURRED WHEN WE WERE TURNING TO A 165 DEG HEADING TO INTERCEPT THE 146 DEG RADIAL OFF OF SEA TO SUMMA INTXN. MY CDI NEEDLE WAS SHOWING A QUICK MOVEMENT TOWARDS CENTER. ATC ASKED US ABOUT THE TURN, SPECIFICALLY WHAT VOR AND RADIAL WE WERE ON. HE STATED THAT WE WERE 1 1/2 MI TOO EARLY. THIS OCCURRED WHILE I WAS TURNING FROM A 70 DEG HEADING A 165 DEG HEADING AS STATED ABOVE. ON THE GND IN SEA, MY CREW NOTICED A 4 TO 5 DEG DIFFERENCE BETWEEN THE CAPT'S AND FO'S RMI NEEDLES AS THEY WERE BOTH TUNED TO SEA VOR. A POSSIBLE INVESTIGATION OF THE RMI NEEDLE DIFFERENCE COULD HAVE CONTRIBUTED TO THE PROB.
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.