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Standard J

Standard Aircraft Corporation · Trainer · United States · Pioneer Age (pre-1919)

Standard J — Trainer
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The Curtiss Night Mail (also Standard JR-1B) was an American single-seat biplane mail aircraft of 1918 — Standard Aircraft Corporation's variant developed for the U.S. Post Office's air-mail service. About 50 Standard JR-1B Night Mail aircraft were built between 1918 and 1919 at Standard Aircraft Plainfield, NJ. The aircraft served the U.S. Post Office Air Mail Service 1918-1921 on early American air-mail routes — particularly the New York-Washington-Chicago corridor.

The JR-1B used a Hispano-Suiza 8 V-8 engine (150 hp). Maximum speed 137 km/h, range 480 km, service ceiling 3,650 m. Capacity: 180 kg of mail in cargo bay. The aircraft was a refined Standard J variant with improved engine + cargo capacity for mail-carrying use. The U.S. Post Office Air Mail Service operated the JR-1B alongside Curtiss JN-4H Jenny variants + de Havilland DH-4 mail planes during the early air-mail era.

Curtiss Night Mail / JR-1B service was concentrated in U.S. Post Office Air Mail Service operations 1918-1921. The aircraft flew night-mail routes (hence the popular name "Night Mail") between New York + Washington + Cleveland + Chicago. Several pilots were killed in early air-mail accidents — the night-flight environment + 1920s-era navigation aids made early American air-mail one of the most-hazardous occupations of the period. The Air Mail Service replaced the JR-1B with the more-capable de Havilland DH-4 + Douglas M-2 mail planes by 1922. About 0 Standard JR-1B airframes survive.

For Kids — a shorter, friendlier version

The Curtiss Night Mail was an American biplane built in 1918. It was also called the Standard JR-1B. This small plane had just one seat for the pilot. Its job was to carry bags of mail across the country.

About 50 of these planes were built between 1918 and 1919. They were made in Plainfield, New Jersey. The plane used a V-8 engine that made 150 horsepower. That helped it carry up to 180 kilograms of mail in its cargo bay.

The Night Mail flew routes between big American cities. Pilots flew between New York, Washington, and Chicago. Some flights happened at night, which is how the plane got its famous nickname. Flying at night in 1918 was very dangerous and brave work.

The plane served the American Post Office Air Mail Service from 1918 to 1921. It flew alongside other mail planes like the Curtiss Jenny and the de Havilland DH-4. The Night Mail was smaller than a modern mail truck, but it was one of the fastest ways to send letters back then.

Fun Facts

  • About 50 Curtiss Night Mail planes were built in just two years.
  • The plane could carry up to 180 kilograms of mail — that's heavier than two large adults!
  • Pilots flew this plane at night to deliver mail faster between cities.
  • The Night Mail flew routes connecting New York, Washington, Cleveland, and Chicago.
  • The plane's top speed was about 137 kilometers per hour.
  • It could fly as high as 3,650 meters — higher than most mountains in the eastern United States.
  • The American Post Office ran some of the world's first regular air-mail services using this plane.
  • The Night Mail flew alongside other famous early mail planes like the Curtiss Jenny.

Kids’ Questions

Why was it called the Night Mail?

Pilots flew this plane at night to deliver mail between cities. Flying after dark helped get letters there faster. That brave night flying gave the plane its cool nickname!

How much mail could the Night Mail carry?

The plane could carry up to 180 kilograms of mail in its cargo bay. That is heavier than most grown-up people. Back in 1918, that was a lot of letters to deliver!

Which cities did the Night Mail fly between?

The Night Mail flew between New York, Washington, Cleveland, and Chicago. These were some of the biggest cities in America. Delivering mail by plane was much faster than sending it by train.

Was flying the Night Mail dangerous?

Yes, early air-mail flying was very dangerous. Pilots flew at night with few lights to guide them. The planes were also new and not as reliable as modern aircraft.

Variants

Standard JR-1B Night Mail (sole production)
About 50 built 1918-1919.

Notable Operators

U.S. Post Office Air Mail Service (1918-1921)
Sole user. Early American air-mail routes.

Frequently Asked Questions

Why is it called Night Mail?

The U.S. Post Office Air Mail Service began night-mail flights using JR-1B aircraft in the late 1910s — establishing the air-mail tradition that mail flies through the night while passengers sleep. The night-flight environment of the 1920s (no airfield lighting + no navigation aids + no cabin heating) made early air-mail one of the most-hazardous flight operations of the period. Multiple JR-1B pilots were killed in the line of duty 1918-1921; the U.S. Post Office Air Mail Service deaths were large enough to inspire later improvements in airfield lighting + navigation aids that would benefit all American aviation.

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