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A MD80's flight guidance system and autopilot were engaged according to company policy by 500-600 ft but the aircraft did not track immediately toward the first waypoint. ATC questioned the aircraft's track.
| Attributes | |
| ACN | 898396 |
| Time | |
| Date | 201007 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Climb |
| Component | |
| Aircraft Component | FMS/FMC |
| Person 1 | |
| Function | First Officer Pilot Flying |
| Person 2 | |
| Function | Pilot Not Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Track / Heading All Types |
Narrative:
Departing the runway on RNAV departure. Selected navigation at 400 ft AGL; navigation captured in FMA window. Selected autopilot between 500 ft AGL and 600 ft AGL. Aircraft turned left approximately 10 degrees. Myself and the captain immediately felt as though this was wrong. All navigational displays showed that we were indeed on course; which is to say on the magenta line proceeding to the interception point on the 190 degree course to the first waypoint. By that point we were beyond the intercept point and the autopilot was aggressively joining the track to waypoint. The flight was normal from that point.
Original NASA ASRS Text
Title: A MD80's flight guidance system and autopilot were engaged according to Company policy by 500-600 FT but the aircraft did not track immediately toward the first waypoint. ATC questioned the aircraft's track.
Narrative: Departing the runway on RNAV Departure. Selected NAV at 400 FT AGL; NAV captured in FMA window. Selected autopilot between 500 FT AGL and 600 FT AGL. Aircraft turned left approximately 10 degrees. Myself and the Captain immediately felt as though this was wrong. All navigational displays showed that we were indeed on course; which is to say on the magenta line proceeding to the interception point on the 190 degree course to the first waypoint. By that point we were beyond the intercept point and the autopilot was aggressively joining the track to waypoint. The flight was normal from that point.
Data retrieved from NASA's ASRS site as of April 2012 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.