Tag Archives: Lockheed Model 10E Electra Special

19 March 1937: Amelia Mary Earhart

Amelia Earhart’s Lockheed Electra 10E Special, NR16020, in a hangar at Wheeler Field, Honolulu, Territory of Hawaii, 19 March 1937. (Hawaii’s Aviation History, http://hawaii.gov/hawaiiaviation )
Amelia Earhart’s Lockheed Electra 10E Special, NR16020, in a hangar at Wheeler Field, Honolulu, Territory of Hawaii, 19 March 1937. (Hawaii’s Aviation History )

19 March 1937: After her record-setting 15 hour, 47 minute overnight flight from Oakland, Amelia Earhart’s Lockheed Electra 10E Special NR16020 was placed in a hangar at Wheeler Army Airfield, Honolulu, for maintenance and repair. During the flight, a propeller pitch change mechanism failed. Inspection revealed that both propeller hubs were badly galled “due to improper or insufficient lubrication.” They were overhauled by the Army Air Corps’ Hawaiian Air Depot at Luke Field, then re-installed on the Electra.

At 11:15 a.m. on the 19th, Paul Mantz and two friends took the Electra for a test flight, then repositioned to Luke Field on Ford Island, with its longer, hard-surfaced runway, for an early morning takeoff on the second leg of the around-the-world flight.

Amelia Earhart’s Lockheed Electra 10E Special, NR16020, with engines running at Wheeler Field, prior to repositioning to Luke Field, 19 March 1937
Amelia Earhart’s Lockheed Electra 10E Special, NR16020, with engines running at Wheeler Field, prior to repositioning to Luke Field, 19 March 1937. (Hawaii’s Aviation History)

© 2017, Bryan R. Swopes

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18 March 1937: Amelia Mary Earhart

Amelia Earhart arrives at Wheeler Field, Honolulu, Territory of Hawaii, 18 March 1937. The airplane is Lockheed Electra 10E Special NR16020. (Hawaii’s Aviation History http://hawaii.gov/hawaiiaviation)
Amelia Earhart arrives at Wheeler Field, Honolulu, Territory of Hawaii, 18 March 1937. The airplane is Lockheed Electra 10E Special NR16020. (Hawaii’s Aviation History http://hawaii.gov/hawaiiaviation)

18 March 1937, 5:40 a.m.: Amelia Earhart and her crew sighted Diamond Head on the island of Oahu, Hawaiian Islands. The Electra landed at Wheeler Army Airfield, Honolulu, after an overnight flight from Oakland, California, completing the first leg of a planned around-the-world flight in 15 hours, 47 minutes.

Also aboard were Paul Mantz, Amelia’s friend and adviser, as co-pilot, navigator Captain Frederick Joseph Noonan, formerly of Pan American Airways, and Captain Harry Manning of United States Lines, acting as radio operator and navigator. The airplane was Earhart’s Lockheed Electra 10E Special, registration NR16020.

About an hour after takeoff from Oakland, California, the Electra overtook the Pan American Airways Hawaii Clipper, which had departed San Francisco Bay an hour-and-a-half before Earhart. She took photographs of the Martin M-130 flying boat.

In her log, Amelia Earhart described the sunset over the Pacific Ocean:

“. . . golden edged clouds ahead, then the golden nothingness of sunset beyond. . . The aft cabin is lighted with a weird green blue light, Our instruments show pink. The sky rose yellow. . . Night has come. The sea is lovely. Venus is setting ahead to the right. The moon is a life-saver. It gives us a horizon to fly by. . . .”

— Amelia: The Centennial Biography of an Aviation Pioneer, by Donald M. Goldstein and Katherine V. Dillon, Brassey’s, Wahington and London, 1997, Chapter 18 at Page 171.

On arrival at Hawaii, Earhart, saying that she was very tired, asked Paul Mantz to make the landing at Wheeler Field.

Amelia Earhart, with flower leis, on her arrival at Wheeler Field, Oahu, Territory of Hawaii, 18 March 1937. (Hawaii’s Aviation History http://hawaii.gov/hawaiiaviation)
Amelia Earhart, with flower leis, on her arrival at Wheeler Field, Oahu, Territory of Hawaii, 18 March 1937. (Hawaii’s Aviation History http://hawaii.gov/hawaiiaviation)

© 2017, Bryan R. Swopes

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17 March 1937: Amelia Mary Earhart

This photograph shows Amelia Earhart taking off from Oakland Municipal Airport, 4:37 p.m., 17 March 1937. (© Bettman/CORBIS)
This photograph shows Amelia Earhart taking off from Oakland Municipal Airport, 4:37 p.m., 17 March 1937. (© Bettman/CORBIS)

17 March 1937, 4:37 p.m.: Amelia Mary Earhart departed Oakland Municipal Airport, on the east shore of San Francisco Bay, starting the first leg of her around-the-world flight. Also aboard were her friend and adviser, Albert Paul Mantz, navigator Frederick J. Noonan and radio operator/navigator Harry Manning. The airplane was Earhart’s Lockheed Electra 10E Special, NR16020.

Amelia Earhart and her crew pose in front of the Electra. Left to right, Paul Mantz, co-pilot; Amelia Earhart, pilot; Captain Harry V. Manning, radio operator/navigator; and Captain Frederick J. Noonan, also a navigator, at Oakland Municipal Airport, California, 17 March 1937.
Amelia Earhart and her crew pose in front of the Electra. Left to right, Paul Mantz, co-pilot; Amelia Earhart, pilot; Captain Harry Manning, radio operator/navigator; and Captain Frederick J. Noonan, also a navigator, at Oakland Municipal Airport, California, 17 March 1937.

Captain Frederick J. Noonan was formerly the Chief Navigator of Pan American Airways, and had extensive experience in transoceanic flight. Captain Harry Manning commanded ocean liners. He would later serve as captain of SS United States, the flagship of America’s Merchant Marine, and Commodore of United States Lines.

Checking weight and balance and fuel quantity calibration at Lockheed, Burbank, California. (Purdue University Library)
Checking weight and balance and fuel quantity calibration at Lockheed, Burbank, California. (Purdue University Library)

Amelia Earhart’s 1936 Electra 10E Special was the fifth of fifteen built by Lockheed. Designed to carry as many as ten passengers, NR16020 had been modified to carry fuel for 20 hours of flight. Amelia first flew the Electra with a Lockheed test pilot, Elmer C. McLeod, 21 July 1936, and took delivery on her 39th birthday, 24 July. The airplane cost $80,000.

Kelly Johnson with a wind tunnel model of a version of the Lockheed Electra. Based on testing, numerous changes were made before the airplane was placed in production. (Lockheed)
Kelly Johnson with a wind tunnel model of a version of the Lockheed Electra. Based on testing, numerous changes were made before the airplane was placed in production. (Lockheed)

The Lockheed Electra 10 was designed by Hall Hibbard, and was Clarence L. “Kelly” Johnson’s first assignment when he went to work at Lockheed. It was 38 feet, 7 inches (11.760 meters) long with a wingspan of 55 feet (16.764 meters) and overall height of 10 feet, 1 inch (3.074 meters). While the basic Model 10 had an empty weight of 6,454 pounds (2,927.5 kilograms), Amelia Earhart’s modified Electra 10E Special had an empty weight of 7,265 pounds (3,458.6 kilograms), partly as a result of the additional fuel tanks which had been installed. Fully fueled, NR16020 carried 1,151 gallons (4,357 liters) of gasoline.

NR19020 was powered by two air-cooled, supercharged, 1,343.804-cubic-inch-displacement (22.021 liter) Pratt & Whitney Wasp S3H1 single-row nine-cylinder radial engines with a compression ratio of 6:1. These engines used a single-stage supercharger. The S3H1 had a Normal Power rating of 550 horsepower at 2,200 r.p.m. to 5,000 feet (1,524 meters), and 600 horsepower at 2,250 r.p.m for Takeoff, using 80/87 aviation gasoline. The direct-drive engines turned two-bladed Hamilton Standard variable-pitch, constant-speed propellers with a diameter of 9 feet, 7/8-inch (2.675 meters). The Wasp S3H1 was 3 feet, 7.01 inches (1.092 meters) long, 4 feet, 3.60 inches (1.311 meters) in diameter, and weighed 865 pounds (392 kilograms).

Amelia Earhart’s Lockheed Electra 10E, NR16020, taking off from Oakland Airport, 1637 hours, 17 March 1937. The tail wheel has just lifted off the runway.
Amelia Earhart’s Lockheed Electra 10E, NR16020, taking off from Oakland Airport, 1637 hours, 17 March 1937. The tail wheel has just lifted off the runway.
Amelia Earhart’s Lockheed Electra 10E, NR16020, departs Oakland, 4:37 p.m., 17 March 1937. The landing gear is retracting. (Purdue University Library)
Amelia Earhart’s Lockheed Electra 10E, NR16020, departs Oakland, 4:37 p.m., 17 March 1937. The landing gear is retracting. (Purdue University Library)
Amelia Earhart’s Lockheed Electra 10E, NR16020, over San Francisco Bay, enroute Hawaii, 17 March 1937. (Clyde Sunderland)
Amelia Earhart’s Lockheed Electra 10E, NR16020, over San Francisco Bay, enroute Hawaii, 17 March 1937. (Clyde Sunderland)

© 2017, Bryan R. Swopes

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