Serious Incident Involving a Tecnam P2006T at Watorowo (SP-DZW)

Incident Overview and Aircraft Details On 7 December 2020, a serious incident occurred involving a Tecnam P2006T aircraft, registration SP-DZW, during a training flight at Watorowo (EPWT). The flight was conducted by an instructor and a student as part of an integrated ATPL(A) training program for the multi-engine (ME) class. ## Sequence of Events At 12:00, the crew departed for a training flight. During the exercise, the crew performed an engine shutdown and restart procedure. After shutting down the right engine, the attempt to restart it was unsuccessful. The instructor then decided to land with the remaining operating engine. ## Post-Landing Actions and Investigation After landing, the instructor taxied the aircraft to the hangar and shut down the left engine. A mechanic connected an external power source, and the instructor successfully started the right engine without issues. The battery was replaced with a new one, and both engines were started. The aircraft was released for further service. ## Contributing Factors The investigation found that the battery capacity had fallen below the allowable 80% threshold. Prior to the incident, the battery capacity was checked during a 100-hour inspection on 4 December 2020 and was at 82%. Additionally, meteorological conditions during the flight were conducive to carburetor icing, with an air temperature of 2.7°C and a dew point of -2.6°C, which may have caused partial icing and hindered the engine restart.