Title: Hiller H-23 Raven

Hiller Helicopter Co was formed in 1942 for the development and production of helicopters. Initial work on early models led to the Model 360, known as the UH-12 (a civil designation in spite of its similarity to US military designations.) This was first produced commercially in 1948 and went on to see extensive service amongst military (as the H-23 series) and civil operators. An extended cabin variant able to carry four persons entered service in 1960, known in military service as the OH-23F.

This title contains three flight manuals for various models of the Hiller family. The files have been copied from the original flight manuals and retain any colour pages.



This title contains:

  • Pilot’s Handbook for the Navy HTE-1 series and Army H-23A series, AN 01-255HBA-1 dated 1-8-51, with approx. 33 pages.
  • US Army Operators Manual for the OH-23D, OH-23F and OH-23G, TM 55-1520-204-10 dated 21-6-71, with approx. 150 pages.
  • Royal Navy Pilot’s Notes for the Hiller HT.Mk.1, AP 4534A-PN dated Nov 53.