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The captain of a bombardier crj reported that the flight management system put out erroneous information.
| Attributes | |
| ACN | 1485894 |
| Time | |
| Date | 201710 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | Regional Jet 200 ER/LR (CRJ200) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Taxi |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | FMS/FMC |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Deviation - Procedural Weight And Balance |
Narrative:
We had a repeat write up on FMS flickering inflight. I coordinated with maintenance to have the FMS changed out in ZZZ. When programming FMS for takeoff; the FMS would not give us the green send command to send off our passenger weights. We called dispatch for manual numbers. On arrival in ZZZ1 area we noticed the landing numbers came back with a vref. Speed on 125 knots. The zero fuel weight was 42.5 and landing fuel was 3.7 giving us landing weight of 46.2. Our vref speed on the card is 140 knots. I know from personal experience that a full aircraft vref speed is around 141 knots. That is a 15 knot difference. We used the 140 knots. I have never seen this happen before so I wanted someone to look into it. I hope it is a onetime glitch.
Original NASA ASRS Text
Title: The Captain of a Bombardier CRJ reported that the Flight Management System put out erroneous information.
Narrative: We had a repeat write up on FMS flickering inflight. I coordinated with maintenance to have the FMS changed out in ZZZ. When programming FMS for takeoff; the FMS would not give us the Green Send command to send off our passenger weights. We called dispatch for manual numbers. On arrival in ZZZ1 area we noticed the landing numbers came back with a VRef. speed on 125 knots. The zero fuel weight was 42.5 and landing fuel was 3.7 giving us landing weight of 46.2. our VRef speed on the card is 140 knots. I know from personal experience that a full aircraft VRef speed is around 141 knots. That is a 15 knot difference. We used the 140 knots. I have never seen this happen before so I wanted someone to look into it. I hope it is a onetime glitch.
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.