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Air carrier flight crew reported a dual FMC failure shortly after flap retraction on departure. Flight diverted to an enroute field.
| Attributes | |
| ACN | 1451147 |
| Time | |
| Date | 201705 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | LFFF.ARTCC |
| State Reference | FO |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Large Transport |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | FMS/FMC |
| Person 1 | |
| Function | Pilot Not Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | Pilot Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Altitude Overshoot Deviation - Procedural Clearance |
Narrative:
Between flap retract and slat retract; above 3;500 feet MSL we experienced dual FMC failure. Lost all nav information; autothrottles; and FMS derived speed information. We informed ATC and requested vectors to opale. I think we were still prior to PG092 on the opale 2G departure; but not sure since it was not present on the standby flight plan. Asked departure for radar vectors to run checklist. As we were leveling at FL100; we were given a climb to FL140; started the climb then were told to remain at fl 100. I think we climbed to about 10;400 feet before descending back to FL100. Ran QRH checklist and talked to dispatch. Dispatch preferred us to land at egss. We advised [center] we could continue to egss. Continued uneventfully to egss. We informed each controlling agency of our limitations and landed uneventfully. The first officer (first officer) remained pilot flying while the reserve first officer and I ran checklists. Reserve first officer did an outstanding job running the checklist and backing us up on everything. First officer did a great job also; flying the airplane while we had our heads buried trying to figure out if we could get an FMC back.
Original NASA ASRS Text
Title: Air carrier flight crew reported a dual FMC failure shortly after flap retraction on departure. Flight diverted to an enroute field.
Narrative: Between Flap Retract and Slat retract; above 3;500 feet MSL we experienced dual FMC failure. Lost all Nav information; Autothrottles; and FMS derived speed information. We informed ATC and requested vectors to OPALE. I think we were still prior to PG092 on the OPALE 2G departure; but not sure since it was not present on the standby flight plan. Asked departure for radar vectors to run checklist. As we were leveling at FL100; we were given a climb to FL140; started the climb then were told to remain at FL 100. I think we climbed to about 10;400 feet before descending back to FL100. Ran QRH checklist and talked to dispatch. Dispatch preferred us to land at EGSS. We advised [center] we could continue to EGSS. Continued uneventfully to EGSS. We informed each controlling agency of our limitations and landed uneventfully. The First Officer (FO) remained pilot flying while the Reserve FO and I ran checklists. Reserve FO did an outstanding job running the checklist and backing us up on everything. FO did a great job also; flying the airplane while we had our heads buried trying to figure out if we could get an FMC back.
Data retrieved from NASA's ASRS site 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.