Pitcairn XO-61

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]

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

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

• Kellett YO-60
• Sikorsky R-4

Related lists

• List of helicopters
• List of military aircraft of the United States