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A departure B767-300 first officer turns off course from the SID during initial climb after the aircraft experiences a map shift just prior to takeoff from lfpg, first officer.
| Attributes | |
| ACN | 483870 |
| Time | |
| Date | 200008 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| State Reference | FO |
| Altitude | agl bound lower : 400 agl bound upper : 1300 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B767-300 and 300 ER |
| 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 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 483870 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument pilot : multi engine |
| ASRS Report | 483871 |
| Events | |
| Anomaly | aircraft equipment problem : less severe conflict : airborne less severe non adherence : published procedure non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | aircraft equipment : tcas other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance controller : separated traffic controller : issued advisory flight crew : took precautionary avoidance action flight crew : returned to intended or assigned course |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Cdg, heading change during departure. Departing cdg runway 26R, I noticed a map shift while in position, not so while #1 for departure. I told the copilot who was flying the airplane that I would monitor raw data since we had a takeoff clearance. After departure we had a TCASII warning in yellow right over the aircraft. I looked outside and saw nothing. When I looked back at my flight instruments I noticed the CDI was 1 DOT to the left. I told the copilot to come left a little bit and 3 seconds later the controller said turn left 10 degrees. I believe that since we had a TCASII warning I became more concerned with that than following the departure radial at the most critical time. Supplemental information from acn 483871: on takeoff from cdg LNAV was engaged at 400 ft AGL and command bars commanded a slight correction to the right. As soon as I did we got the TCASII TA and had visual contact with an aircraft that took off on the parallel runway. At the same time the captain checked the raw data and told me I was slightly right of the radial. I was already in the turn based on the captain's information, and there was no further comment from the controller. The moral of the story is to make sure the FMS is giving you accurate information, before doing what it says. Check the raw data first.
Original NASA ASRS Text
Title: A DEP B767-300 FO TURNS OFF COURSE FROM THE SID DURING INITIAL CLB AFTER THE ACFT EXPERIENCES A MAP SHIFT JUST PRIOR TO TKOF FROM LFPG, FO.
Narrative: CDG, HEADING CHANGE DURING DEP. DEPARTING CDG RWY 26R, I NOTICED A MAP SHIFT WHILE IN POS, NOT SO WHILE #1 FOR DEP. I TOLD THE COPLT WHO WAS FLYING THE AIRPLANE THAT I WOULD MONITOR RAW DATA SINCE WE HAD A TKOF CLRNC. AFTER DEP WE HAD A TCASII WARNING IN YELLOW RIGHT OVER THE ACFT. I LOOKED OUTSIDE AND SAW NOTHING. WHEN I LOOKED BACK AT MY FLT INSTS I NOTICED THE CDI WAS 1 DOT TO THE L. I TOLD THE COPLT TO COME L A LITTLE BIT AND 3 SECONDS LATER THE CTLR SAID TURN L 10 DEGS. I BELIEVE THAT SINCE WE HAD A TCASII WARNING I BECAME MORE CONCERNED WITH THAT THAN FOLLOWING THE DEP RADIAL AT THE MOST CRITICAL TIME. SUPPLEMENTAL INFO FROM ACN 483871: ON TKOF FROM CDG LNAV WAS ENGAGED AT 400 FT AGL AND COMMAND BARS COMMANDED A SLIGHT CORRECTION TO THE R. AS SOON AS I DID WE GOT THE TCASII TA AND HAD VISUAL CONTACT WITH AN ACFT THAT TOOK OFF ON THE PARALLEL RWY. AT THE SAME TIME THE CAPT CHKED THE RAW DATA AND TOLD ME I WAS SLIGHTLY R OF THE RADIAL. I WAS ALREADY IN THE TURN BASED ON THE CAPT'S INFO, AND THERE WAS NO FURTHER COMMENT FROM THE CTLR. THE MORAL OF THE STORY IS TO MAKE SURE THE FMS IS GIVING YOU ACCURATE INFO, BEFORE DOING WHAT IT SAYS. CHK THE RAW DATA FIRST.
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.