A Cirrus SF50 Vision Jet pilot had an interesting experience on approach to Austin Bergstrom International Airport (KAUS) in Texas last month. According to the National Transportation Safety Board (NTSB) Preliminary Report (attached below), the pilot initially thought he had experienced a bird strike, followed by an uncommanded activation of the Emergency Autoland sequence – not once, but twice.
My personal opinion is it might be a hobby RC or a drone. As those are engine powered and could likely be the source of oil. Maybe a hobbyist got a little too close for comfort?
Most RC aircraft and drones are battery powered nowadays. There are turbine powered RC aircraft that use liquid fuel, but they are not that common due to the expense of these models.
That was very close to a center strike. Most likely an RC/Drone didn’t make it home. Very surprised that no FOD entered the engine or impacted the V-tail.