Diamond pursues engine alternatives

June 19, 2008

Diamond Aircraft is seeking Canadian and FAA approval to put Lycoming IO-360 engines on the DA42 Twin Star in place of diesel engines.

Thielert Aircraft Engines, the German company that built the original diesel engine, remains in bankruptcy. Given emerging new technical problems with the engine, Diamond officials said they are concerned Thielert will not survive.

In the meantime, Diamond and Austro Engine are seeking approval to make parts and provide support for the Thielert engine.

Diamond continues to pursue certification of a separate diesel engine made by Austro Engine, but certification could take most of this year for approval in Europe, and not before 2009 in the United States.

Although Thielert is bankrupt, Frank Thielert continues as general manager under the watchful eye of the bankruptcy administrator. Diamond Aircraft has registered along with dozens of other companies to become an investor in Thielert as part of the bankruptcy proceedings. Talks on that subject will occur in a few weeks, bankruptcy administrators say.

Diamond officials said in mid-June that they have concerns over the failure of Thielert to resume engine production. The next day, the bankruptcy administrator issued a press release stating production had started. A spokesman said production resumed only days earlier, and he could not predict when a finished engine would emerge from the plant in Germany.

Bankruptcy administrators have been accused by Diamond officials of overcharging for spare parts.

Al Marsh

Alton K. Marsh | AOPA Pilot Senior Editor, AOPA

AOPA Pilot Senior Editor Alton Marsh has been a pilot since 1970 and has an airline transport pilot certificate and instrument and multiengine flight instructor certificates, aerobatic training, and a commercial seaplane certificate.