Unfallbericht:
About 15 minutes after takeoff from Victoria, while climbing through FL160 (en route to FL330), the airplane abruptly nosed over to approximately a forty-degree nose-down angle. The pilot disconnected the autopilot, throttled back to idle, and attempted to re-trim the airplane. He reported that the cockpit trim indicator was in the full forward (nose down) position and that neither the manual nor the electric trim actuators would respond to his inputs. After numerous configuration changes and unsuccessful attempts to regain full pitch control, the pilot elected to ditch the airplane in the water at Penns Cove, 200 yards from shore. Both occupants swam ashore.
PROBABLE CAUSE: "The loss of airplane pitch control (trim runway and mistrim condition) resulting from a failure in the airplane's electric pitch trim system. Factors that contributed to the accident were the manufacturer's inadequate design of the pitch trim circuitry that allowed for a single-point failure mode, and the absence of an adequate failure warning system to clearly alert the pilot to the pitch trim runaway condition in sufficient time to respond in accordance with the manufacturer's checklist instructions."
| Status: | Schlussbericht |
| Datum: | Dienstag 22 Juli 2003 |
| Zeit: | 10:15 |
| Flugzeugtyp: |  Cessna 525 CitationJet |
| Fluggesellschaft: | Tango Corp. |
| Kennzeichen: | N996JR |
| Werknummer: | 525-0147 |
| Baujahr: | 1996 |
| Betriebsstunden: | 590 |
| Triebwerk: | 2 Williams International FJ44-1A |
| Besatzung: | Todesopfer: 0 / Insassen: 1 |
| Fluggäste: | Todesopfer: 0 / Insassen: 1 |
| Gesamt: | Todesopfer: 0 / Insassen: 2 |
| Sachschaden: | Schwer beschädigt |
| Unfallort: | Oak Harbor, WA ( USA)
|
| Flugphase: | Während des Fluges (ENR) |
| Betriebsart: | Privat |
| Flug von: | Victoria International Airport, BC (YYJ/CYYJ), Kanada |
| Boise Air Terminal, ID (BOI/KBOI), USA |
About 15 minutes after takeoff from Victoria, while climbing through FL160 (en route to FL330), the airplane abruptly nosed over to approximately a forty-degree nose-down angle. The pilot disconnected the autopilot, throttled back to idle, and attempted to re-trim the airplane. He reported that the cockpit trim indicator was in the full forward (nose down) position and that neither the manual nor the electric trim actuators would respond to his inputs. After numerous configuration changes and unsuccessful attempts to regain full pitch control, the pilot elected to ditch the airplane in the water at Penns Cove, 200 yards from shore. Both occupants swam ashore.
Probable Cause:
PROBABLE CAUSE: "The loss of airplane pitch control (trim runway and mistrim condition) resulting from a failure in the airplane's electric pitch trim system. Factors that contributed to the accident were the manufacturer's inadequate design of the pitch trim circuitry that allowed for a single-point failure mode, and the absence of an adequate failure warning system to clearly alert the pilot to the pitch trim runaway condition in sufficient time to respond in accordance with the manufacturer's checklist instructions."
Accident investigation:
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Informationsquelle:
» NTSBSicherheitsempfehlungen
NTSB issued 3 Safety Recommendations
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Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Victoria International Airport, BC to Boise Air Terminal, ID as the crow flies is 786 km (491 miles).
Distance from Victoria International Airport, BC to Boise Air Terminal, ID as the crow flies is 786 km (491 miles).
This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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