Auto Avia Design’s TPE331 installation for the Air Tractor 301/302 replaces the original Pratt & Whitney Wasp R1340 or Avco Lycoming engine with an AlliedSignal TPE331 turbo-propeller engine flat rated to either 665 hp or 680 hp.
Auto Avia Design’s AT301/302 conversion and FU24 Stallion conversion are the only turbine conversions recognised by Allied Signal for warranty purposes.
Specifications
Applicable Models: Airtractor AT-301, AT-302
Engine: AlliedSignal Aerospace TPE331-1, -2, -3, or -6
Propeller: Hartzell HC-B3TN-5M/T10282+4
Power:
TPE331-2, -3, -6: 680 SHP (Flat Rated, MTOP & MCP)
TPE331-1: 665 SHP (Flat Rated, MTOP & MCP)
Certification: CASA Supplemental Type Certificate No. 220-2.
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