Product
Photo: Honeywell
The Honeywell 331-150 APU.
Auxiliary Power Units with internal design deriving from Honeywell's TPE331 turboprop engine and highest power-to-weight ratio in their class. Includes 331-200 APU (first electronically controlled APU), 331-350 APU, and 331-500 APU (added eductor for oil cooling). Also known as GTCP331 APU with GTCP: Gas Turbine Compressor Power.
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