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ASN Wikibase Occurrence # 179850
Last updated: 24 March 2021
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Type:Silhouette image of generic C421 model; specific model in this crash may look slightly different
Cessna 421B Golden Eagle
Owner/operator:STS Avijacija
Registration: YU-BSW
C/n / msn: 421B0248
Fatalities:Fatalities: 1 / Occupants: 3
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Location:Ozren -   Bosnia and Herzegovina
Phase: En route
Departure airport:Banja Luka International Airport (BNX/LQBK)
Destination airport:Tuzla International Airport (TZL/LQTZ)
The aircraft hit a mountain during VFR flight. Possible CFIT.

Causes of the accident (translated from Bosnian)
Based on the conducted investigation and analysis of the collected evidence and available information, on the crash of the aircraft Cessna 421B, registration mark YU-BSW, the Commission concluded:
The root cause of the accident is the entry of the aircraft into the cloud at a low altitude, in conditions of increased cloudiness, which led to the impact of the aircraft in the ground. The accident is caused by inadequate preparation of the crew for the flight, deviation of the crew from the planned and approved route by location (diversion from the given route) and flight height (flight at a lower altitude than the approved one), as well as not taking timely procedures to return to the given route and flight height, as well as incorrect actions in case of encountering a deteriorated weather situation on the route under VFR flight conditions.
The accident was affected by:
a) The decision of the manager on the manner of execution of the flight
b) Ignoring information about the meteorological situation and weather forecast
c) Inadequate preparation of the crew for the execution of the flight at a low altitude and in conditions of fire of the meteorological situation,
d) Non-compliance with VFR rules for minimum flight height and meteorological minimum for airspace class F and G
e) Loss of visual contact with the ground.


Accident investigation:
Investigating agency: 
Status: Investigation completed
Download report: Final report



Revision history:

24-Sep-2015 18:17 Avijaticar Added
24-Sep-2015 18:18 harro Updated [Aircraft type, Registration, Cn, Other fatalities, Narrative]
24-Sep-2015 18:43 Scorpion Updated [Departure airport, Destination airport]
24-Sep-2015 18:52 Scorpion Updated [Departure airport, Destination airport]
25-Sep-2015 09:05 Anon. Updated [Photo, ]
17-May-2020 12:26 KagurazakaHanayo Updated [Source, Narrative]
14-Jan-2021 03:59 RobertMB Updated [Nature, Departure airport, Destination airport, Source, Accident report]

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