Tag Archives: Lockheed Aircraft Company

22 May 1937

Amelia Earhart's Lockheed Electra 10E, NR16020
Amelia Earhart’s Lockheed Electra 10E Special, NR16020

22 May 1937: Earhart’s Lockheed Electra 10E Special, NR16020 was repaired at Tucson, Arizona after its left engine, a Pratt & Whitney Wasp S3H1 nine-cylinder radial, caught fire while restarting after a fuel stop the previous day. Amelia Earhart and her Navigator, Fred Noonan, and two passengers, flew to New Orleans, Louisiana, on the 22nd.

Although she was actually on the third leg of her second around-the-world-flight attempt, no public announcement had yet been made. She—well, prevaricated—when speaking to local newspaper reporters.

The Arizona Daily Star reported:

Fire Delays Amelia Earhart Here While She Plans Flight

Will Start on World Trip Near the End of This Month She Says While Searching for Fire Extinguisher After Dousing Small Blaze In Plane

     Temporarily grounded in Tucson due to a minor fire which did little damage to the motor of her $90,000 Flying Laboratory, Amelia Earhart announced here last night that with good weather, her second globe girdling trip would start sometime near the end of this month. The route will be the same except for minor changes called for by shifting weather conditions.

     The The Blaze Miss Earhart said was just minor and was caused when an overheated motor “backfired.” It was quickly smothered by a mechanical chemical extinguisher which Miss Earhart released. She said this shot the chemical into all parts of the engine and put the fire out. The damage was negligible she said and she expects to take off today for some eastern city, probably El Paso.

With Husband

     Miss Earhart, with her husband, George Palmer Putnam, New York publisher, Captain Fred Noonan, and her mechanic, Bo McKneely, had just landed at the municipal airport after a flight from Burbank, California, when flames shot from the engine. The aviatrix, who had left the plane, saw the fire break out in the left motor as the plane was being taxied to the hangar. The plane was stopped and she extinguished the blaze with the automatic extinguisher connected with the motor.

     The huge craft, twin-motored Lockhead [sic] Electra, was taken to the hangar, where attendants cleaned the soot and chemical from the engine.

Just Out of Shop

     Miss Earhart and her party came to the Pioneer hotel last night after the plane was taken care of in the municipal hangar. She said the plane had just been out of the factory at Burbank for two days after having been completely overhauled following the crack-up in Honolulu. “It’s just like new now,” and has to be taken on a shake-down flight. I’d like to put 50 hours on it before the big flight.”

     Thursday they flew from Burbank to Oakland and return and yesterday they came here. Putnam is returning to New York and Miss Earhart will fly him part way. “I’m just flying anywhere,” she said, “merely to check the plane and see that everything is working properly. We made all of our fuel tests before and of course don’t have to do that again. Our course this time will be much the same as the last one with the exception of a few changes due to shifting weather. That course was made for conditions as they were in March and now, 60 days later, the weather has altered in some places. The route will be primarily around the world following the equator.”

Something to Do

     Miss Earhart said she would like very much to make this first around the world flight. “If I don’t some one else will,” she added. She said lone flyers have pioneered all the present commercial and it’s up to lone flyers to continue making new courses. “And besides this flight gives me something to do,” she concluded.

     In the meantime Miss Earhart was without a serviceable fire extinguisher. Her trick mechanical one that so neatly put out the fire last night was exhausted and as it must be filled with a special “under pressure” system which the local airport did not possess, she could not have it recharged until she returns to Burbank. She also carries in her plane several of the small quart size hand operated extinguishers. These were also played on yesterday’s blaze by mechanics and were empty.

Extinguishers Needed

     Putnam and Miss Earhart decided that they would have to have some serviceable fire fighting equipment before they left in the morning, just as a precautionary measure. They decided, at least, to get their small hand operated extinguishers recharged. Surely, they thought, they could get them filled in Tucson.

     A half hour on the telephone calling everyone possible from he fire department to the airport revealed no recharge chemical for the extinguishers. They decided to abandon that idea and get an extinguisher, but the little ones they had cost $14. Now $14 is a good bit to pay for additional extinguishers even for a $90,000 plane, when you already have some and all you need is the chemical.

Filler Provided

     Finally the night man at the Motor Service company said he had one dandy big extinguisher of the “turn upside down and let ‘er go” variety which he thought would be just swell for Miss Earhart’s Plane. The phones buzzed again and Putnam said, “Buy it, then we’ll have something.” But this extinguisher, bright and shiny with a pretty red handle, was not filled. That was an easy problem and was soon solved by Chief Joe Robert’s men. He carefully measured each chemical and filled it properly. The copper extinguisher was promptly delivered to Miss Earhart. She started to write out a check to pay for teh apparatus and said, “What date is today?”

     She was told “May 21.”

     “Why that’s right,” she said, “five years ago today I landed in Ireland.”

Made History

     Miss Earhart went on talking about her propsed trip. She might also have mentioned that on that trip five years ago she made world history, being the first woman pilot to fly solo across the Atlantic ocean, her flight was from Newfoundland to Ireland. In January 1935, she flew from Hawaii to California and in May of the same year she flew from Mexico City to New York in a non-stop jump. This past March she set a new record in her flight from California to Honolulu.

     The fire extinguisher man pocketed the check and left. Then half of Tucson called up with extinguishers of all descriptions. Her mechanic secured recharges for the hand extinguishers and all was well. She was told to be sure and keep this newly purchased extinguisher in an upright position. Not expecting to do any loops, she said she would.

The Arizona Daily Star, Tucson, Arizona, Vol. 96, No. 142, Saturday Morning, 22 May 1937, at  Page 1, Columns 6 and 7, and Page 5, Columns 2 and 3

“The next morning at Tucson a dense sandstorm blocked our way, but despite it we took off, leap-frogging at 8,000 feet over El Paso with a seemingly solid mass of sand billowing below us like a turbulent yellow sea. That night we reached New Orleans. . . .”

— Amelia Earhart

Great Circle route between Tucson, Arizona, and New Orleans, Louisiana. 1,069 nautical miles (1,230 statute miles/1,980 kilometers). (Great Circle Mapper)

© 2022, Bryan R. Swopes

21 May 1937

Amelia Earhart prepares to leave Burbank, California, 21 May 1937.
Amelia Earhart prepares to leave Burbank, California, 21 May 1937.

21 May 1937: Day 2 of Amelia Earhart’s second attempt to fly around the world aboard her Lockheed Electra 10E, NR16020. She and her navigator, Fred Noonan, fly from Union Air Terminal, Burbank, California, to Tucson, Arizona, where they stopped to refuel. Earhart’s husband, George Palmer Putnam, and aircraft mechanic Ruckins D. “Bo” McKneely were also aboard. ¹

When Earhart attempted to restart the left engine at Tucson, it caught fire. An unplanned overnight stay was required while the damage was repaired.

“Accompanying me on this hop across the continent was Fred Noonan. “Bo” McKneely my mechanic, and Mr. Putnam. A leisurely afternoon’s flight ended at Tucson, Arizona. The weather was sailing hot as Arizona can be in summertime. After landing and checking in, when I started my motors again to taxi to the filling pit the left one back-fired and burst into flames. For a few seconds it was nip-and-tuck whether the fire would get away from us. There weren’t adequate extinguishers ready on the ground but fortunately the Lux apparatus built in the engine killed the fire. The damage was trivial, mostly some pungently cooked rubber fittings a deal of dirty grime. The engine required a good cleaning and the ship a face-washing.”

—Amelia Earhart

¹ Although the standard Lockheed Electra 10E was certified to carry up to 10 passengers, the Restricted certification of NR16020 limited it to, “Only bona fide members of the crew to be carried.” The presence of Putnam and McKneely violated this restriction.

Great Circle route from the location of the former Union Air Terminal (now, Hollywood-Burbank Airport) to Davis-Monthan AFB, Tucson, Arizona: 396 nautical miles (455 statute miles/733 kilometers). (Great Circle Mapper)

© 2018, Bryan R. Swopes

20 May 1937

Amelia Earhart with her Lockheed Electra 10E, NR16020.

Leg 1: After her Lockheed Electra 10E Special, NR16020, was repaired by Lockheed following a takeoff accident at Wheeler Field, Oahu, in March, Amelia Earhart repositioned it to Oakland Municipal Airport to begin her second attempt to fly around the world. Because of changing weather patterns since the earlier attempt, this time her route will be eastward.

Great Circle route between Oakland Airport and Union Air Terminal. (Great Circle Mapper)

On 20 May 1937, without any public notice, Earhart and her navigator, Captain Frederick J. Noonan, left Oakland, California, on the first leg of the trip: 283 nautical miles (325 miles (523 kilometers) to Union Air Terminal, Burbank, California (now, Hollywood Burbank Airport—BUR), where the airplane was manufactured and repaired. They arrived at about 6:00 p.m. and remained there over night.

“The rebuilt Electra came out of the Lockheed plant on May 19. Two days later we flew it to Oakland. . .  As that time we had made no announcement of my decision to reverse the direction of the flight. It seemed sensible to slip away as quietly as we could. While I was actually heading for Miami, with hope of keeping on from there eastward, technically the journey from Burbank across the country was a shake-down flight. If difficulties developed we would bring the ship back to the Lockheed plant for further adjustments.”

—Amelia Earhart

Amelia Earhart in the cockpit of her Electra. (Rudy Arnold Collection)

© 2018, Bryan R. Swopes

20–21 May 1932

Amelia Earhart at Harbor Grace, Newfoundland, 20 May 1932. Photographer: Ernest Maunder. Courtesy of Library and Archives Canada (PA-057854).
Amelia Earhart at Harbor Grace, Newfoundland, 20 May 1932. Photographer: Ernest Maunder. Courtesy of Library and Archives Canada (PA-057854).

20 May 1932: At 7:12 p.m., local, aviatrix Amelia Earhart departed Harbor Grace, Newfoundland, on a solo transoceanic flight. Her airplane was a modified single-engine Lockheed Model 5B Vega, registration NR7952.

Her plan was to fly all the way to Paris, but after her altimeter had failed, encountering adverse weather, including heavy icing and fog, a fuel leak, and a damaged exhaust manifold, Earhart landed in a field at Culmore, Northern Ireland. The distance flown was 2,026 miles (3,260.5 kilometers). Her elapsed time was 14 hours, 56 minutes.

A lone, astonished farmer saw her land.

Amelia cut the switches, climbed out of the plane, and, as the man approached the plane, called out, “Where am I?”

Danny McCallion replied obligingly and with excruciating accuracy. “In Gallegher’s pasture.”

The Sound of Wings by Mary S. Lovell, St. Martin’s Press, New York, 1989, Chapter Fifteen at Page 183.

Amelia Earhart with her Lockheed Vega 5B, NR7952, at Culmore, North Ireland after her solo transatlantic flight, 21 May 1932. (National Library of Ireland)

Though she didn’t make it all the way to Paris, she was the first woman—and only the second person, after Charles A. Lindbergh—to fly solo across the Atlantic Ocean. Lindbergh’s flight was on the same date, five years earlier.

Great Circle route between Harbour Grace Airport, Newfoundland, and Londonderry Airport, near Culmore, Northern Ireland. 1,754 nautical miles (2,019 statute miles/3,249 kilometers). (Great Circle Mapper)

In an unusual move, Amelia Earhart, a civilian, was awarded the United States military’s Distinguished Flying Cross by Patrick J. Hurley, Secretary of War, 18 July 1932.

Amelia Earhart’s Distinguished Flying Cross certificate signed by Patrick J. Hurley, Secretary of War.

Built by the Lockheed Aircraft Company in December 1928, the Vega is a single-engine high-wing monoplane designed to carry a pilot and up to seven passengers. The fuselage was molded laminated plywood monocoque construction and the wing was cantilevered wood. The Vega 5B is 27 feet, 6 inches (8.382 meters) long with a wingspan of 41 feet (12.497 meters) and overall height of 8 feet, 2 inches (2.489 meters).

Amelia Earhart stands in front of her Lockheed Model 5B Vega, NR7952, at Union Airport, 1932. Left to right, Earhart; Lockheed founder Allan Loughead; Paul Mantz; and Lockheed president Lloyd Stearman. (Philip S. Dockter/Valley Relics Museum)

Earhart’s Vega, serial number 22, was certified by the Department of Commerce, 17 September 1931, with its empty weight increased 220 pounds (99.8 kilograms) to 2,695 pounds (1,222.4 kilograms) and maximum gross weight of 4,375 pounds (1984.5 kilograms).

Aircraft Registration Certificate, Lockheed Vega, serial number 22, NC7952, 1928.

NR7952 was modified at the Fokker Aircraft Corporation of America factory in Teterboro, New Jersey, to increase the fuel capacity to 420 gallons (1,589.9 liters). While it was there, Earhart’s mechanic, Eddie Gorski, replaced the original Pratt & Whitney Wasp B engine with a new Wasp C, an air-cooled, supercharged 1,343.804-cubic-inch-displacement (22.021 liter) nine cylinder radial engine with a compression ration of 5.25:1. The Wasp C was rated at 420 horsepower at 2,000 r.p.m. at Sea Level, burning 58 octane gasoline.¹ It was a direct-drive engine, and turned a two-bladed Hamilton Standard controllable-pitch propeller. The Wasp C was 3 feet, 6.63 inches (1.083 meters) long, 4 feet, 3.44 inches (1.307 meters) in diameter and weighed 745 pounds (338 kilograms).

The standard Vega 5 had a cruising speed of 165 miles per hour (265.5 kilometers per hour) and maximum speed of 185 miles per hour (297.7 kilometers per hour). The service ceiling was 15,000 feet (4,572 meters). Range with standard fuel tanks was 725 miles (1,166.8 kilometers).

Amelia Earhart disappeared in 1937 while attempting to fly around the world. Her Lockheed Model 5B Vega, NR7952, is in the collection of the Smithsonian Institution National Air and Space Museum.

Amelia Earhart's Lockheed Vega 5b, NR7952, at the Smithsonian Institution National Air and Space Museum.
Amelia Earhart’s Lockheed Model 5B Vega, NR7952, at the Smithsonian Institution National Air and Space Museum. (NASM)

¹ The Pratt & Whitney Wasp C was also used by the U.S. Army and Navy, designated R-1340-7. It was rated at 450 horsepower at 2,100 r.p.m. at Sea Level.

© 2019, Bryan R. Swopes

7 May 1937

Lockheed XC-35 36-353 in flight. (U.S. Air Force)

7 May 1937: First flight of the Lockheed XC-35, Air Corps serial number 36-353. Ordered by the Air Corps in 1936 as a high-altitude research aircraft, and for the development of cabin pressurization, the XC-35 Supercharged Cabin Transport Airplane was a highly modified Lockheed Electra 10A. It was the first airplane to be specifically built with a pressurized cabin.

The Army Air Corps was awarded the Collier Trophy for 1937 for the XC-35 project.

With a strengthened circular fuselage and smaller windows, the XC-35′s passenger compartment was pressurized by engine turbo-superchargers and controlled by a flight engineer. Cabin pressure could be maintained at the equivalent of 12,000 feet (3,658 meters) above sea level, at an actual altitude of 30,000 feet (9,144 meters).

A crew of three and two passengers were accommodated within the pressurized section, and there was room for another passenger to the rear of the pressure bulkhead, which could only be used at lower altitudes.

Lockheed XC-35 36-353.

The Lockheed XC-35 was powered by two air-cooled, supercharged, 1,343.804-cubic-inch-displacement (22.021 liter) Pratt & Whitney R-1340-43 (Wasp T5H1) single-row, nine-cylinder radial engines with a compression ratio of 6:1. The R-1340-43 had a Normal and Takeoff Power rating of 550 horsepower at 2,200 r.p.m. from Sea Level to 3,000 feet (914 meters), burning 92-octane gasoline. It was direct drive. The engine was 3 feet, 6.25 inches (1.073 meters) long, 4 feet, 3.50 inches (1.308 meters) in diameter, and weighed 864 pounds (392 kilograms).

Able to fly above 30,000 feet (9,144 meters), the XC-35 was later used by NACA for thunderstorm penetration research flights. In 1948 it was transferred to the Smithsonian Institution.

Lockheed XC-35 35-363. (U.S. Air Force)
Lockheed XC-35 36-353. (U.S. Air Force)

© 2017, Bryan R. Swopes