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Accident
Last updated: 3 December 2016
Status:Schlussbericht
Datum:Sonntag 14 Februar 2010
Zeit:20:20
Flugzeugtyp:Silhouette image of generic C550 model; specific model in this crash may look slightly different
Cessna 550B Citation Bravo
Fluggesellschaft:Time Air
Kennzeichen: OK-ACH
Werknummer: 550-1111
Baujahr: 2005
Betriebsstunden:1830
Anzahl Zyklen der Zelle:1686
Triebwerk: 2 Pratt & Whitney Canada PW530A
Besatzung:Todesopfer: 2 / Insassen: 2
Fluggäste:Todesopfer: 0 / Insassen: 0
Gesamt:Todesopfer: 2 / Insassen: 2
Sachschaden: Zerstört
Konsequenzen: Written off (damaged beyond repair)
Unfallort:4,5 km (2.8 Meilen) SW of Reinhardtsdorf-Schöna (   Deutschland)
Flugphase: Während des Fluges (ENR)
Betriebsart:Leerflug
Flug von:Praha-Ruzyne International Airport (PRG/LKPR), Tschechische Republik
Flug nach:Karlstad Airport (KSD/ESOK), Schweden
Flugnummer: 039C
Unfallbericht:
A Cessna 550B Citation Bravo corporate jet, registered OK-ACH, was destroyed in an accident in the area of the Großer Zschirnstein Mountain. Both pilots were killed.
Flight TIE039C departed Prague-Ruzyne International Airport (PRG) at 20:08 on an IFR flight to Karlstad Airport (KSD), Sweden. The copilot was Pilot Flying.
At 20:14, while the airplane was climbing to cruising altitude, the copilot asked the captain if she had ever flown a roll at night. Meanwhile, the air traffic controller at Prague cleared the flight to climb to FL260.
The flightcrew continued their conversation about performing a roll with Citation Bravo jets. At 20:17 the Pilot Flying rolled the 30° to the left and immediately 20° to the right. Prague ATC then instructed the flight to contact Munich ATC. Contact was established and clearance was given to climb from FL260 to FL330. This was confirmed by the crew.
At 20:18 the captain asked the copilot if their altitude was high enough to perform a roll. The copilot confirmed that the altitude was sufficient.
At 20:19 the flight levelled off at FL270. Five seconds later the nose pitched up to 14° and a roll to the right was initiated. Within four seconds the airplane was flying upside down. It rolled a further 90° in the next four seconds. Meanwhile the heading began to change and the nose dropped in an almost vertical dive of -85°.
The computed airspeed increased from about 240 knots at the initiation of the roll to 380 knots during the descent.
The flight crew were not able to recover and the airplane impacted a forest.


Ursachen
Der Flugunfall ist darauf zurückzuführen, dass
- die Besatzung versuchte, ein in der Verkehrsfliegerei nicht vorgesehenes Flugmanöver (Rolle) durchzuführen.
- die Besatzung die räumliche Orientierung und in der Folge die Fertigkeit eines kontrollierten Ausleitens aus der eingenommenen Fluglage verlor.
Folgende Faktoren haben beigetragen:
- Die Piloten waren nicht im Kunstflug ausgebildet.
- Es herrschte Nacht, dadurch fehlten optische Referenzen.
- Das persönliche Verhältnis zwischen beiden Piloten führte zum Ausstieg aus dem professionellen Verhalten in der Zusammenarbeit im Cockpit.
- Das Flugzeug war für Kunstflug weder ausgelegt noch zugelassen.

Informationsquelle:

Official accident investigation report
cover
investigating agency: Bundesstelle für Flugunfalluntersuchung (BFU) - Germany
report status: Final
report number: BFU CX001-10
report released:20 August 2013
duration of investigation: 3 years and 6 months
download report: Untersuchungsbericht (BFU CX001-10)

Sicherheitsempfehlungen

BFU issued 2 Safety Recommendations

Show all AD's and Safety Recommendations

Fotos

photo of Cessna 550B Citation Bravo OK-ACH
photo of Cessna 550B Citation Bravo OK-ACH
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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 Praha-Ruzyne International Airport to Karlstad Airport as the crow flies is 1033 km (646 miles).

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