June 2010 Issue
Rotax Engine Mods: Some Good Options
Engine heaters are a welcome arrival for those running Rotax in colder climates. Better starts, fuel flow and electrical power hold appeal as well.
With more and more Rotax engines out in the field, it makes sense that there is a growing market of aftermarket parts and accessories. However, this is purely good news for owners of Rotax engines on experimental aircraft, including E-LSAs. For owners of S-LSAs—factory complete LSAs not registered as experimental—the usefulness of these parts depends on what it is and which aircraft they own. S-LSAs don’t use the STC process many aircraft owners know and love (or not). Instead, almost any modification can be made with a letter of authorization (LOA) from the aircraft manufacturer. These LOAs are supposed to be issued on an aircraft-by-aircraft basis. So, just because your hangar neighbor with the same LSA has an LOA for a particular change, that doesn’t give you the right to do it. That said, the more organized LSA manufacturers keep common LOAs ready to go for customers who request them.
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