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CE680 flight crew overshot 4;000 ft when the captain accidentally nudged the altitude alerter to 3;000 ft passing 4;400 ft and quickly reset it to 4;000 ft.
| Attributes | |
| ACN | 980395 |
| Time | |
| Date | 201111 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | SMO.Airport |
| State Reference | CA |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Cessna Citation Sovereign (C680) |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Descent |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 40 Flight Crew Total 6000 Flight Crew Type 130 |
| Person 2 | |
| Function | Pilot Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 50 Flight Crew Total 3300 Flight Crew Type 40 |
| Events | |
| Anomaly | Deviation - Altitude Overshoot Deviation - Procedural Clearance |
Narrative:
[We were] at about 4;600 ft descending to 4;000 ft. I; pilot not flying; changed the altitude alerter from 4;000 to 3;000 by mistake. I quickly set it back to 4;000 ft as the plane passed through about 4;400 ft. The plane didn't level off at 4;000 ft but continued to descend. We were alert and stopped the descent by 3;800 ft; but don't understand why it wouldn't capture. For most autopilots this wouldn't be a problem. The honeywell epic system in the ce-680; sovereign; is full of gotcha's like this. VNAV drops off; direct to sometimes won't turn to selected point.
Original NASA ASRS Text
Title: CE680 flight crew overshot 4;000 FT when the Captain accidentally nudged the altitude alerter to 3;000 FT passing 4;400 FT and quickly reset it to 4;000 FT.
Narrative: [We were] at about 4;600 FT descending to 4;000 FT. I; pilot not flying; changed the altitude alerter from 4;000 to 3;000 by mistake. I quickly set it back to 4;000 FT as the plane passed through about 4;400 FT. The plane didn't level off at 4;000 FT but continued to descend. We were alert and stopped the descent by 3;800 FT; but don't understand why it wouldn't capture. For most autopilots this wouldn't be a problem. The Honeywell Epic system in the CE-680; Sovereign; is full of gotcha's like this. VNAV drops off; Direct To sometimes won't turn to selected point.
Data retrieved from NASA's ASRS site as of April 2012 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.