Pitcairn XO-61
Role Autogyro
National origin United States
Manufacturer Pitcairn Aircraft Inc
Primary user United States Army Air Forces

The Pitcairn XO-61 was an American autogyro designed by Pitcairn Aircraft. One of the last autogyros produced, in competition with the Kellett YO-60 and the Sikorsky R-4, it fell victim to cooling problems with its rear-mounted engine and the coming of the helicopter with its ability to hover.[1][2]

Also known by the company model number PA-44 and the contract designation MX-157,[3] the contract for the XO-61 was taken over by G&A Aircraft upon G&A's acquisition of Pitcairn Aircraft.[4]

See also

Aircraft of comparable role, configuration, and era

Related lists



  1. ^ Gregg, E. Stuart, "Above & Beyond: Jump Ship" Archived 2013-10-17 at the Wayback Machine. Air & Space Smithsonian, March 2001
  2. ^ Harris, Franklin D. An Overview of Autogyros and The McDonnell XV-1 Convertiplane, NASA/CR—2003–212799. NASA Ames Research Center, October 2003
  3. ^ Cully, George & Andreas Parsch: MX-1 to MX-499 Listing, designation-systems.net
  4. ^ Wings of Freedom Winter 2007/2008, Volume 22 Number 4, Delaware Valley Historical Aircraft Association.