On February 9, 2015, a Bombardier DHC-8-400 was involved in an aviation accident near EPWW, PL. This summary draws on records from the Polish State Commission on Aircraft Accidents Investigation (PKBWL).
On 9 February 2015, a Bombardier DHC-8-400 crew received a traffic advisory and subsequently a TCAS resolution advisory, prompting a 700-foot descent. The cause was not established.
Summary
On 9 February 2015, an incident occurred involving a Bombardier DHC-8-400 aircraft in the Warsaw Flight Information Region (EPWW). The Polish State Commission for Aircraft Accident Investigation (PKBWL) investigated the event. The cause of the incident was not determined, and no safety recommendations were issued.
Event Description
While cruising at flight level (FL) 240 within the Warsaw FIR, the flight crew was informed of a descending aircraft operating at a higher altitude. Approximately five seconds later, the Traffic Collision Avoidance System (TCAS) issued a resolution advisory (RA). The crew executed a descent maneuver of 700 feet. The flight subsequently continued without further incident.
Investigation Findings
The investigation, led by Bogdan Fydrych, concluded that the cause of the incident could not be established. The commission did not formulate any safety recommendations.