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Erj 170-200 lr pilot reported a software malfunction during climb out.
| Attributes | |
| ACN | 1678959 |
| Time | |
| Date | 201908 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 170/175 ER/LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb Takeoff |
| Route In Use | Direct |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | FCC (Flight Control Computer) |
| Person 1 | |
| Function | Pilot Not Flying |
| Qualification | Flight Crew Multiengine Flight Crew Instrument Flight Crew Commercial Flight Crew Private |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy |
Narrative:
After takeoff dual flight director never switched over at accel alt and continued to command an abnormally high pitch attitude. All other indications showed the plane still climbing in takeoff mode. Shortly thereafter; both packs turned off and the autothrottles failed. I attempted to reset the packs but that was unsuccessful. I then addressed the flight path management issues as the pressurization failure was secondary. The pilot flying correctly was pitching well below the flight director as following it would have taken us into a low speed event. I selected manual speed and bugged 200 kts but this had no effect on the flight director so the pilot flying continued to pitch for the speed. I notified ATC of the pressurization issue and requested to maintain 7;000 feet which was approved. Once level and accelerating the pilot flying retarded the thrust levers at which time we received a tla not toga caution msg which indicated the plane was still in takeoff mode. At this point I decided to cancel all modes on the guidance panel; when I reengaged the lateral and vertical modes the flight director switched and both packs came back on. At this time with no failures present I notified ATC we could continue our climb. Once above 10;000 feet I sent a msg to maintenance and dispatch. The remainder of the flight was uneventful.
Original NASA ASRS Text
Title: ERJ 170-200 LR pilot reported a software malfunction during climb out.
Narrative: After takeoff dual flight director never switched over at accel alt and continued to command an abnormally high pitch attitude. All other indications showed the plane still climbing in takeoff mode. Shortly thereafter; both packs turned off and the autothrottles failed. I attempted to reset the packs but that was unsuccessful. I then addressed the flight path management issues as the pressurization failure was secondary. The Pilot Flying correctly was pitching well below the flight director as following it would have taken us into a low speed event. I selected manual speed and bugged 200 kts but this had no effect on the flight director so the Pilot Flying continued to pitch for the speed. I notified ATC of the pressurization issue and requested to maintain 7;000 feet which was approved. Once level and accelerating the Pilot Flying retarded the thrust levers at which time we received a TLA NOT TOGA caution msg which indicated the plane was still in takeoff mode. At this point I decided to cancel all modes on the guidance panel; when I reengaged the lateral and vertical modes the flight director switched and both packs came back on. At this time with no failures present I notified ATC we could continue our climb. Once above 10;000 feet I sent a msg to Maintenance and Dispatch. The remainder of the flight was uneventful.
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.