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Ce-560 flight crew reported overshooting assigned altitude on descent due to inadvertent autopilot disconnect and distraction with ipads.
| Attributes | |
| ACN | 1478509 |
| Time | |
| Date | 201709 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Citation V/Ultra/Encore (C560) |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Descent |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Not Flying Captain |
| Person 2 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Deviation - Altitude Overshoot Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy |
Narrative:
We were descending from 16000 to 12000 with the autopilot on. I called 1000 to go at 13000 ft. Pilot flying responded 13000 for 12000. About that time ATC called and asked if we had destination weather and what runway and approach we wanted. I responded and then opened my ipad to confirm the airport and approach. As I was looking at the ipad; ATC called and asked what altitude had we been cleared to. I responded 12000 and saw that we were descending through 10500. Pilot flying (PF) then stopped the descent and started to correct back to 12000. ATC then instructed us to continue the descent to 9000. I asked PF how and why he had not leveled off at 12000. He told me that the autopilot had inadvertently disconnected without him knowing it; and that he had been looking at his ipad and not monitoring the airplane. I need to monitor the PF and airplane better during critical phases of flight. Just because he responded to the altitude callout does not mean that he or the autopilot is going to do it.
Original NASA ASRS Text
Title: CE-560 flight crew reported overshooting assigned altitude on descent due to inadvertent autopilot disconnect and distraction with iPads.
Narrative: We were descending from 16000 to 12000 with the autopilot on. I called 1000 to go at 13000 ft. Pilot Flying responded 13000 for 12000. About that time ATC called and asked if we had destination weather and what runway and approach we wanted. I responded and then opened my iPad to confirm the airport and approach. As I was looking at the IPad; ATC called and asked what altitude had we been cleared to. I responded 12000 and saw that we were descending through 10500. Pilot Flying (PF) then stopped the descent and started to correct back to 12000. ATC then instructed us to continue the descent to 9000. I asked PF how and why he had not leveled off at 12000. He told me that the autopilot had inadvertently disconnected without him knowing it; and that he had been looking at his iPad and not monitoring the airplane. I need to monitor the PF and airplane better during critical phases of flight. Just because he responded to the altitude callout does not mean that he or the autopilot is going to do it.
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.