Piper L-4J Grasshopper
One-engine two-seat liaison/observation/trainer high-wing monoplane

Archive Photos 1

Piper L-4J Grasshopper (AF 45-4655) on display c.2002 at the Hill Aerospace Museum, Hill AFB, Roy, Utah (Photos by John Shupek)

Overview 2

The Piper Grasshopper is a light observation and liaison monoplane which was developed from the Cub Trainer. The U.S. Air Forces designation was L-4, the U.S. Navy designation was NE-1, and the British name for the aircraft was Piper Cub. It is basically similar to the civil model except that the rear of the cabin has been provided with greater window area. This aircraft was originally given the Army designation O-59 but was subsequently transferred to the liaison category and re-designated L-4.

The Piper L-4A, L-4B and L-4H were all manufactured under Army contracts and differ from each other only in minor details. Other models in the Piper L-4 series were civil models which were bought secondhand for pre-glider training and other miscellaneous duties. These civil models were identified as follows:

Specifications (L-4J) 2




Tail Unit

Landing Gear

Power Plant






  1. Photos: John Shupek
  2. Bridgman, Leonard. (editor). Jane’s All The World’s Aircraft 1945/46, Sampson Low, Marston & Company, Ltd., London, 1946, page 297c-298c

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