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A B717 FMS locked up after pushback. Maintenance advised crew FMS would work fine in the air; but it froze up. Flight crew returned to departure airport.
| Attributes | |
| ACN | 780089 |
| Time | |
| Date | 200803 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B717 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : initial |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| ASRS Report | 780089 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : diverted to another airport |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance |
| Primary Problem | Aircraft |
Narrative:
After pushback we had trouble with FMS lock-up. Everything was programmed and speeds and takeoff data were displayed. The captain conferred with maintenance control and attempted rebooting the system with little success. They informed us that the FMS would work after departure when it updated its position. We proceeded to the runway and departed. On climb out it appeared that the FMS was operating normally. Moments later it froze up again. We returned to the airport for a visual approach without incident.
Original NASA ASRS Text
Title: A B717 FMS LOCKED UP AFTER PUSHBACK. MAINT ADVISED CREW FMS WOULD WORK FINE IN THE AIR; BUT IT FROZE UP. FLT CREW RETURNED TO DEP ARPT.
Narrative: AFTER PUSHBACK WE HAD TROUBLE WITH FMS LOCK-UP. EVERYTHING WAS PROGRAMMED AND SPDS AND TKOF DATA WERE DISPLAYED. THE CAPT CONFERRED WITH MAINT CTL AND ATTEMPTED REBOOTING THE SYS WITH LITTLE SUCCESS. THEY INFORMED US THAT THE FMS WOULD WORK AFTER DEP WHEN IT UPDATED ITS POS. WE PROCEEDED TO THE RWY AND DEPARTED. ON CLBOUT IT APPEARED THAT THE FMS WAS OPERATING NORMALLY. MOMENTS LATER IT FROZE UP AGAIN. WE RETURNED TO THE ARPT FOR A VISUAL APCH WITHOUT INCIDENT.
Data retrieved from NASA's ASRS site as of May 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.