In yet another indication that the Diamond-Thielert split is permanent, Diamond Aircraft showed its 168-hp. AE 300 Austro Engine diesel at Oshkosh.(Paid Subscription Required)

It is based on the same block as the Thielert, the Mercedes A-class four-cylinder engine, but heavier, since they replace some of the aluminum parts with cast iron for greater reliability, which has always been the Thielert Achilles heel.

It’s currently being test flown in 3 aircraft.