An Embraer EMB-110P1 Bandeirante cargo plane experienced a delayed takeoff due to adverse weather. The aircraft aborted takeoff and initiated a precautionary maneuver, including shutting down the left engine. Following a 180-degree turn to assess damage, the aircraft subsequently retraced its path on the runway, resulting in debris on the runway. A briefcase containing contents fell out, impacting the left propeller. The incident highlights a failure to adequately assess potential risks and to properly execute contingency plans.An Embraer EMB-110P1 Bandeirante cargo plane experienced a delayed takeoff due to adverse weather. The aircraft aborted takeoff and initiated a precautionary maneuver, including shutting down the left engine. Following a 180-degree turn to assess damage, the aircraft subsequently retraced its path on the runway, resulting in debris on the runway. A briefcase containing contents fell out, impacting the left propeller. The incident highlights a failure to adequately assess potential risks and to properly execute contingency plans.