Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Commercial
Flight Crew Last 90 Days 70; Flight Crew Total 5000; Flight Crew Type 1800
Workload; Communication Breakdown; Distraction
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Other / Unknown
Flight Crew Returned To Departure Airport; Flight Crew Landed in Emergency Condition
Aircraft
After experiencing some abnormal engine parameters I turned back toward my departure airport. As a precaution I secured the left engine in flight. On about a 5 mile final Tower asked me to do a 360 to follow another aircraft. I informed them unable due to being on a single engine. I did not feel there was any danger or need for emergency vehicles upon landing and therefore no need to declare an emergency. However; I did not want to engage in any unnecessary maneuvering.
A C414 pilot secured an abnormally running engine after takeoff and returned to the departure airport but did not declare an emergency.