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BD700 flight crew experiences an altitude and speed deviation when FMS speed is selected by the flying pilot during radar vectors for approach. The nfp takes control manually to continue the approach to landing.
| Attributes | |
| ACN | 1209444 |
| Time | |
| Date | 201410 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.TRACON |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | Global Express (BD700) |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Speed All Types |
Narrative:
We were flying the downwind leg for the ILS at 3000 feet when we cleared to turn to heading 280. The autopilot was engaged the airspeed marked 210. Suddenly; when I selected FMS speed; the plane started to accelerate to 250 kts and climbing. The pilot monitoring (PIC) took the controls; and at that time; the plane already gained 1000 feet of altitude. The PIC (pilot monitoring) disengaged the autopilot and manually returned to the altitude and speed for the ILS; and proceeded to land.I should configure the plane for the ILS so much earlier; so when the plane gets away from the airport; it will not accelerate to 250 kts.
Original NASA ASRS Text
Title: BD700 flight crew experiences an altitude and speed deviation when FMS speed is selected by the flying pilot during Radar vectors for approach. The NFP takes control manually to continue the approach to landing.
Narrative: We were flying the downwind leg for the ILS at 3000 feet when we cleared to turn to heading 280. The Autopilot was engaged the airspeed marked 210. Suddenly; When I selected FMS speed; the plane started to accelerate to 250 Kts and climbing. The pilot monitoring (PIC) took the controls; and at that time; the plane already gained 1000 feet of altitude. The PIC (pilot monitoring) disengaged the Autopilot and manually returned to the altitude and speed for the ILS; and proceeded to land.I should configure the plane for the ILS so much earlier; so when the plane gets away from the airport; it will not accelerate to 250 kts.
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.