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An MD83 flight crew experienced navigation and altitude deviations when their FMC failed to provide guidance after takeoff. ATC assisted on departure and the flight crew continued the flight to their destination using alternate resources.
| Attributes | |
| ACN | 922589 |
| Time | |
| Date | 201012 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | MD-83 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Takeoff |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | FMS/FMC |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | First Officer |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Altitude Overshoot Deviation - Procedural Clearance Deviation - Track / Heading All Types |
Narrative:
Attempted to select navigation on takeoff; but FMA went back to takeoff; and perf/navigation unavailable displayed on CDU. Requested vectors; but there was a snag in the hand off from tower to departure. After some initial confusion we were leveled off at 5;000 ft and given a vector. I'm concerned--everything looked fine and we had no warning the FMS was not going to work.
Original NASA ASRS Text
Title: An MD83 flight crew experienced navigation and altitude deviations when their FMC failed to provide guidance after takeoff. ATC assisted on departure and the flight crew continued the flight to their destination using alternate resources.
Narrative: Attempted to select NAV on takeoff; but FMA went back to TKOF; and PERF/NAV UNAVAILABLE displayed on CDU. Requested vectors; but there was a snag in the hand off from Tower to Departure. After some initial confusion we were leveled off at 5;000 FT and given a vector. I'm concerned--everything looked fine and we had no warning the FMS was not going to work.
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.