Installation of an Allison 250-C30M engine, an engine scavenge oil filter, a redesignated exhaust stack (RMH configuration) and engine cowling(carbon fiber), an option of deleting an auxiliary oil cooler (P/N 20006A), and a relocation of the engine ignition exciter box on the engine compartment deck. View PDF on drs.faa.gov ↗

The STC PDF is authoritative: installation instructions, ICA requirements and limitations.