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Pilot reported continuing the approach and landing after autopilot malfunctioned and a loss of communications with ATC.
| Attributes | |
| ACN | 1712982 |
| Time | |
| Date | 201912 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | SCT.TRACON |
| State Reference | CA |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Challenger 650 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Autopilot |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Published Material / Policy |
Narrative:
We were being vectored for an ILS runway 16R at vny. The turn was well over 90 with a 130 heading to intercept. ATC changed the heading to 190 to intercept from the other side. The aircraft started to descend even with altitude hold on. I disengaged the auto pilot to recapture the altitude by hand. We got a sudden uncommanded go around. The pm (pilot monitoring) then re-entered the ILS and we tried to recapture the ILS. Again we had a go around. We were VMC and saw the terrain and vny and I decided to just manually land the plane rather than go IFR. We never had a egpws warning and temporarily lost ATC com. We landed without further incident.
Original NASA ASRS Text
Title: Pilot reported continuing the approach and landing after autopilot malfunctioned and a loss of communications with ATC.
Narrative: We were being vectored for an ILS Runway 16R at VNY. The turn was well over 90 with a 130 heading to intercept. ATC changed the heading to 190 to intercept from the other side. The aircraft started to descend even with ALT Hold on. I disengaged the auto pilot to recapture the altitude by hand. We got a sudden uncommanded go around. The PM (Pilot Monitoring) then re-entered the ILS and we tried to recapture the ILS. Again we had a go around. We were VMC and saw the terrain and VNY and I decided to just manually land the plane rather than go IFR. We never had a EGPWS warning and temporarily lost ATC com. We landed without further incident.
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.