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G200 flight crew reported a malfunction with one autopilot shortly after level off from climb. Crew switched to other autopilot and continued to the destination.
| Attributes | |
| ACN | 1447795 |
| Time | |
| Date | 201705 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Gulfstream G200 (IAI 1126 Galaxy) |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Initial Climb |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Autopilot |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Commercial Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 20 Flight Crew Total 2200 Flight Crew Type 250 |
| Person 2 | |
| Function | First Officer Pilot Not Flying |
| Qualification | Flight Crew Flight Instructor Flight Crew Multiengine Flight Crew Commercial Flight Crew Instrument |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy |
Narrative:
I was pilot in command and the pilot flying after a normal takeoff climbing out from ZZZ. Gear was up and we were turning to a heading of 320 with the auto-pilot (ap) engaged set to level at 3000 feet. Almost immediately after leveling at 3000 feet the plane pitched aggressively up and started climbing. I immediately disconnected the autopilot and pitched down and trimmed down but there was real resistance (felt like a runaway trim). I believe the highest we climbed was 4000-4500 feet. My copilot pushed down with me to adjust altitude and he requested a heading and block altitude from ATC while we evaluated the situation. We hand-flew the plane.having three options of landing overweight (we were above max landing weight); dump fuel or continue; as we were going to a maintenance facility we opted to continue to our destination and trouble shoot/monitor closely the situation.I advised my copilot to couple the ap to his side and try to re-engage the ap. We had enough fuel to fly to our destination at an altitude below 28;000 feet but since the ap was operating normally on the right side we continued flight with it operating uneventfully in that position in rvsm (FL400-FL410). We reacted immediately and advised ATC immediately after taking rapid corrective action. We train for this and will continue to do so. I am sorry if we caused aggravation and we appreciate the immediate assistance provided to us by ATC.
Original NASA ASRS Text
Title: G200 flight crew reported a malfunction with one autopilot shortly after level off from climb. Crew switched to other autopilot and continued to the destination.
Narrative: I was Pilot in Command and the Pilot Flying after a normal takeoff climbing out from ZZZ. Gear was up and we were turning to a heading of 320 with the auto-pilot (AP) engaged set to level at 3000 feet. Almost immediately after leveling at 3000 feet the plane pitched aggressively up and started climbing. I immediately disconnected the autopilot and pitched down and trimmed down but there was real resistance (felt like a runaway trim). I believe the highest we climbed was 4000-4500 feet. My copilot pushed down with me to adjust altitude and he requested a heading and block altitude from ATC while we evaluated the situation. We hand-flew the plane.Having three options of landing overweight (we were above max landing weight); dump fuel or continue; as we were going to a Maintenance Facility we opted to continue to our destination and trouble shoot/monitor closely the situation.I advised my copilot to couple the AP to his side and try to re-engage the AP. We had enough fuel to fly to our destination at an altitude below 28;000 feet but since the AP was operating normally on the right side we continued flight with it operating uneventfully in that position in RVSM (FL400-FL410). We reacted immediately and advised ATC immediately after taking rapid corrective action. We train for this and will continue to do so. I am sorry if we caused aggravation and we appreciate the immediate assistance provided to us by ATC.
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.