Piasecki 16H Pathfinder
The Piasecki 16H was a series of compound helicopters produced in the 1960s. The first version of the Pathfinder, the -1 version, first flew in 1962. The similar but larger Pathfinder II, the 16H-1A, was completed in 1965. Variants Model 16H-1 Pathfinder one PWC PT6B-2 with one 405 shp turboshaft engine Model 16H-1A Pathfinder II larger version with one T58-GE-8 Model 16H-1C Pathfinder III proposed conversion of the 16H-1A with one T58-GE-5 Model 16H-3J nine-seat development, not built. Specifications (16H-1A) See also References Notes Bibliography Robb, Raymond L. "Hybrid helicopters: Compounding the quest for speed", Vertiflite. Summer 2006. American Helicopter Society. External links Model 16H-1 Pathfinder Model 16H-1A Pathfinder II Model 16H-3 16H 1960s United States experimental aircraft Ducted fan-powered aircraft Compound helicopters 1960s United States helicopters Single-turbine helicopters Aircraft first flown in 1962