CH-53D Sea Stallion Modern Military hundreds of SR-20s have been

hundreds of SR-20s have been sold since the first was delivered in 1999 as of December 2006 over 2000 planes together with the SR-22 has been made

and on September 3

Wingspan 12 3/4 inches

The Night Observation Device

Responding to 1937 RAF specifications requiring a substitute for the "Hurricane" fighter

CH-53D Sea Stallion Modern Military hundreds of SR-20s have beenSikorsky CH 53 Sea Stallion helicopter model. The CH 53D is a more capable version of the CH 53A introduced into the Marine Corps in 1966. CH 53Ds, with improved engines and increased power, are also used to recover downed aircraft, sweep mined areas and, if necessary, tow distressed ships. Used extensively both afloat and ashore, the Sea Stallion was the heavy lift helicopter for the Marine Corps until the introduction of the CH 53E triple engine