The History of the Piper L-4 Grasshopper
The Piper L-4 Grasshopper is an evolution from the successful Piper Cub series which was launched in 1930. By 1941, the U.S.
Army had procured four such aircraft in the market for this highly reliable light observation and liaison aircraft, designated the YO-59, and later ordered no less than 40 O. -59. A special U.S.
Army model O-59A appeared in the series (soon to be renamed L-4, with the "L" identifying the aircraft family as "Link"), which had a number of improvements in components to make the "battlefield" The system is ready.
The core of the L-4 Grasshopper is a high-wing, fuselage-supported monoplane with two seats, including a pilot and a passenger/instructor. The system's lightweight and sturdy reliability made it popular with her crew, and the Grasshopper served multiple nations for decades in times of war and peace. After being designated L-4 in 1942, the system was ordered to be evaluated as a training aircraft and accepted as TG-8 by the USAAF (United States Army Air Force).
The US Navy adopted their own version of the Grasshopper as the NE-1 and NE-2. The ambulance version of the Locust came as the HE-1, although the "H" in the name was soon reserved for the helicopter, and the HE-1 is now reserved as the AE-1.
The L-4 Grasshopper served the Armed Forces for many years, completing production in 1981, although the popularity of the system prompted the production line to reopen in 1988. These new grasshoppers, modified and upgraded to appear, however, failed to ignite the fires that burned earlier. Around 5,500 aircraft of this series are said to have been produced, although some sources put the number at 5,700.
As we all know, the Grasshopper series was vital to the U.S. military during World War II and the Korean War.
Specification
Basic
Production
Roles
- Reconnaissance (RECCE)
Dimensions
22.01 ft (6.71 m)
10.74m
6.66 ft (2.03 m)
Weight
331 kg
553 kg
Performance
Performance
85 mph (137 km/h; 74 knots)
9,301 ft (2,835 m; 1.76 mi)
190 miles (306 km; 165 nmi)
Armor
No.
Changes
YO-59 - Artillery reconnaissance and liaison variant (Piper Cub Model J-3C-65) procured by the US Army for evaluation; 4 such examples.
O-59 - Official production model name assigned to 40 examples based on YO-59 trials.
O-59A - US Army specific variant designation; equipped with Continental O-170-3 engine; later renamed L-4 designation.
L-4 - Renamed from O-59A designation.
L-4H
TG-8 - USAAF training glider; dual controls for pilot and passenger/instructor; redesigned forward fuselage; no power plant; 250 copies made this way.
XLNP-1 US Navy evaluation designation TG-8 training glider; tried 3 such examples.
NE-1 - US Navy-designated J3C-65 model with dual controls; 230 examples.
NE-2 - US Navy model similar to NE-1 but with minor cosmetic changes; 20 examples.
HE-1 - Piper J-5C Cub model purchased for outpatient services; space for stretcher; later renamed AE-1.
AE-1 - Renamed to HE-1 model.



