Category Archives: Aviation

7 December 1941

Cornelia Clark Fort, with a Fairchild PT-19A Cornell trainer. (U.S. Air Force)
Cornelia Clark Fort, with a Fairchild PT-19A Cornell trainer. (U.S. Air Force)

7 December 1941: Cornelia Clark Fort was an instructor in the Civilian Pilot Training Program at John Rodgers Airport, near Honolulu on the island of Oahu, Territory of Hawaii. Early on this Sunday morning, she and a student, a Mr. Suomala, were practicing touch-and-goes at John Rodgers Airport in an Interstate Cadet, NC37345, a two-place light airplane owned by the local flying club.¹

Shortly before 8:00 a.m., Miss Fort saw a silver military-type airplane approaching her Cadet at high speed. She took over the flight controls from Mr. Suomala and put the trainer into a steep climb. The other airplane flew directly under, close enough that she felt the vibrations of its engine. She saw that its wings carried the “rising sun” insignia of the Empire of Japan.

Fort landed the Cadet at John Rogers Airport, which was being attacked by Japanese airplanes. Another trainer on the ground was destroyed by machine gunfire and its instructor killed.

A page from Cornelia Fort’s pilot logbook with her remarks for December 7, 1941. (Texas Women’s University)
A page from Cornelia Fort’s pilot logbook with her remarks for December 7, 1941. (Texas Women’s University)

Fort’s logbook entry for 7 December 1941 reads: “Cadet, 37345, Cont. 65—Flight interrupted by Japanese attack on Pearl Harbor. An enemy airplane shot at my airplane and missed and proceeded to strafe John Rodgers, a civilian airport. Another airplane machine-gunned the ground in front of me as I taxied back to the hangar.” The logbook shows her total accumulated flight time at the end of this flight as 893 hours, 25 minutes.

Cornelia Clark Fort. (Tennessee State Library and Archives)
Cornelia Clark Fort. (Tennessee State Library and Archives)

Cornelia Clark Fort was born into an affluent family in Nashville, Tennessee, 5 February 1919, the fourth of five children of Dr. Rufus Elijah Fort and Louise Clark Fort. Her father was a prominent surgeon who co-founded the National Life and Accident Insurance Company. The family lived at Fortland, an estate east of Nashville.

Cornelia Clark Fort. (1936 Milestones)

Cornelia attended the Ward-Belmont School in Nashville, then studied at the Ogontz School in Philadelphia. (Amelia Earhart had also attended Ogontz.) In 1937, Miss Fort transferred to Sarah Lawrence College, Yonkers, New York, where she studied Literature. She graduated 10 June 1939.

After taking a flight with a friend, Jack Caldwell, in January 1940, she pursued an interest in aviation, starting flight lessons the following day. She had earned her pilot certificate and flight instructor certificate by June 1940, which made her the first woman to become an instructor at Nashville. With the Civilian Pilot Training Program, she first went to Fort Collins, Colorado, where she taught for about three months, then went on to Honolulu.

Pilots of the Women's Auxiliary Ferrying Squadron at Long Beach Army Airfield, 1943. Left to right, Barbara Towne, Cornelia Clark Fort, Evelyn Sharp, Barbara Erickson and bernice Batten. The airplane is a Vultee BT-13 Valiant. (Texas Women's University)
Pilots of the Women’s Auxiliary Ferrying Squadron at Long Beach Army Airfield, 7 March 1943. Left to right, Barbara Towne, Cornelia Clark Fort, Evelyn Sharp, Barbara Erickson and Bernice Batten. The airplane is a Vultee BT-13 Valiant. (Texas Women’s University)

Following the attack on Pearl Harbor, all civilian aircraft were grounded. Cornelia Fort was able to return to the mainland United States in early 1942. In September she was one of the first 25 women accepted into the Women’s Auxiliary Ferrying Service. She was assigned to the 6th Ferrying Group based at Long Beach, California.

Cornelia Clark Fort’s military identification card. (Nashville Public Library)

On 21 March 1943, while ferrying a new Vultee BT-13A Valiant basic trainer, serial number 42-42432, from the factory at Downey, California, to an airfield in Texas, her left wing was struck from behind by another airplane. With its wing damaged, the BT-13 rolled over and entered an inverted dive. It crashed approximately 10 miles (16 kilometers) south of Merkel, Texas, and Cornelia Fort was killed.

Cornelia Clark Fort was the first female pilot killed while on active military duty. She was 24 years old.

Air & Space/Smithsonian quoted from a letter written by Fort in a January 2012 article:

“I dearly loved the airports, little and big. I loved the sky and the airplanes, and yet, best of all I loved the flying. . . I was happiest in the sky at dawn when the quietness of the air was like a caress, when the noon sun beat down, and at dusk when the sky was drenched with the fading light.”

—Cornelia Clark Fort, 1942.

Interstate Cadet S-1A NC34939, s/n 34, the same type airplane flown by Cornelia Fort on 7 December 1941.

The trainer flown by Cornelia Fort and her student on the morning of 7 December 1941 was a Cadet S-1A, serial number 188, built by the Interstate Aircraft and Engineering Company, El Segundo, California. It was a high-wing monoplane with a tandem cockpit. The fuselage of the Cadet was built of a welded tubular steel framework. The wings had two spruce spars with Alclad metal ribs. The leading edges were covered in Dural sheet and the complete wing then covered in doped fabric. The wing support struts were made of tubular steel. The S-1A was 24 feet, 0 inches (7.315 meters) long with a wingspan of 35 feet, 6 inches (10.820 meters) and height of 7 feet, 3 inches (2.210 meters). The airplane had an empty weight of 720 pounds (327 kilograms) and maximum weight of 1,200 pounds (544 kilograms).

The Interstate Cadet S-1A was powered by an air-cooled, normally-aspirated 171.002-cubic-inch-displacement (2.802 liter) Continental A65-8 horizontally-opposed four cylinder direct-drive engine, with a compression ratio of 6.3:1. It was rated at 65 horsepower at 2,300 r.p.m. at Sea Level, using 73-octane gasoline. The engine turned a two-bladed fixed-pitch wooden propeller with a diameter of 6 feet, 4 inches (1.930 meters).

The Cadet S-1A had a maximum speed of 103 miles per hour (166 kilometers per hour) in level flight, and 139 miles per hour (224 kilometers per hour) in a dive. The service ceiling was 14,500 feet (4,420 meters). The S-1A’s fuel capacity was 15 gallons (57 liters). Its maximum range was approximately 350 miles (563 kilometers).

Approximately 320 Cadets were built by Interstate in 1941–1942. They were sold for $2,095. With the onset of World War II, Interstate switched production to the L-6 Grasshopper.

The fuselage frame, c/n 188, is owned by a retired airline pilot, Kent Pietsch, who owns and has restored four other Cadets.

Interstate Cadet S-1A
Interstate Cadet S-1A NC37266, flown by Greg Anders. (Wikipedia)

¹ Greg Anders, Director of The Heritage Flight Museum, Burlington, Washington, owns an Interstate Cadet that he believes was the one flown by Cornelia Fort on 7 December 1941. It carried the registration number NC37266. In an article in Air & Space Magazine, November 2016, he stated that he believes that Fort’s logbook is actually a copy, and that Fort incorrectly listed NC37345.

© 2018, Bryan R. Swopes

7 December 1941

Mitsubishi A6M2 Type 0 Model 21 (“Zero”) fighters ready for takeoff aboard an aircraft carrier of the Imperial Japanese Navy, 7 December 1941. (Imperial Japanese Navy)
Mitsubishi A6M2 Type 0 Model 21 (“Zero”) fighters prepare for takeoff aboard IJN Akagi, 7 December 1941. (Imperial Japanese Navy)
A Mitsubishi A6M2 Type 0 Model 21, A1-108, flown by PO2c Sakae Mori, takes of from IJN Akagi, an aircraft carrier of the Imperial Japanese Navy, 7 December 1941. (U.S. Navy)

7 December 1936

Boeing YB-17 36-149 nosed over on landing at Seattle, 7 December 1936. (Unattributed)
Boeing YB-17 36-149 nosed over on landing at Seattle, 7 December 1936. (Unattributed)
Lieutenant Colonel Stanley Umstead
Lieutenant Colonel Stanley Umstead

7 December 1936: After its third test flight, the first YB-17 service test aircraft, 36-149, landed back at Boeing Field, Seattle, Washington. The pilot was Lieutenant Colonel Stanley M. Umstead, Air Corps, United States Army, who was considered to be the Army’s most experienced and capable pilot.

When the airplane touched down, the main wheels locked and after skidding a short distance, the B-17 nosed over. The bomber’s brakes had welded. No injuries were reported. 36-149 suffered moderate damage.

Boeing repaired the bomber. On 11 January 1937, the YB-17 was  flown to Wright Field, Dayton, Ohio, for continued testing. 36-149 was then assigned to the 2nd Bombardment Group at Langley Field, Virginia, 1 March 1937. In October 1940 the bomber was transferred to the 19th Bombardment Group at March Field, California. On 11 February 1942 it was transferred to the Air Park at Amarillo Army Air Field, a B-17 training base in Texas. 36-149 was written off 11 December 1942.

A contemporary newspaper article reported the incident:

Landing from a test flight in Seattle, Wash., the new 16 ton army bombing plane YB-17 nosed over and was badly damaged. Capt. E.R. McReynolds, an army air corps observer who was aboard, said the air brakes locked, preventing the landing wheels from rolling when the plane touched the ground. It was reported subsequently in Washington, D.C. that the accident might result in suspending construction of 13 bombing planes of similar type pending an investigation. The YB-17, largest land plane ever built in America, was designed to carry a ton of bombs and had a cruising range of 3,000 miles.

Chicago Sunday Tribune, 13 December 1936, Part 2, Page 8, Column 8.

Boeing YB-17 resting on its nose after brakes locked while landing. —LIFE Magazine, 21 December 1935, at page 15
Boeing YB-17 36-149 resting on its nose after its brakes locked while landing. —LIFE Magazine, 21 December 1936, at page 15.

The YB-17 had several improvements over the Model 299, which had been retroactively designated XB-17. There were long carburetor intakes on the top of the engine nacelles, which visually distinguishes the YB-17 from the follow-on YB-17A. The main landing gear has one strut rather than the two of the Model 299.

The Boeing Model 299B was designated YB-17 by the Army Air Corps. It was 68 feet, 4 inches (20.828 meters) long with a wingspan of 103 feet, 9 inches (31.633 meters) and an overall height of 18 feet, 4 inches (5.588 meters). It had an empty weight of 24,465 pounds (11,097 kilograms), gross weight of 34,880 pounds (15,821 kilograms) and maximum takeoff weight of 42,600 pounds (19,323 kilograms).

Instead of the Pratt & Whitney engines installed on the 299, the YB-17 had four air-cooled, supercharged 1,823.129-cubic-inch-displacement (29.875 liter) Wright Aeronautical Division Cyclone 9 R-1820G5 (R-1820-39) nine-cylinder radial engines with a compression ratio of 6.45:1. The R-1820-39 was rated at 805 horsepower at 2,100 r.p.m., at Sea Level, and 930 horsepower at 2,200 r.p.m., at Sea Level, for takeoff. The engines turned three-bladed Hamilton Standard constant-speed propellers through a 16:11 gear reduction, in order to match the engines’ effective power range with the propellers. The R-1820-39 was 3 feet, 9-7/16 inches (1.154 meters) long, 4 feet, 6-¼ inches (1.378 meters) in diameter, and weighed 1,198 pounds (543.4 kilograms).

The cruise speed of the YB-17 was 217 miles per hour (349 kilometers per hour) and its maximum speed was 256 miles per hour (412 kilometers per hour) at 14,000 feet (4,267 meters). The bomber’s service ceiling was 30,600 feet (9,327 meters) and the maximum range was 3,320 miles (5,343 kilometers).

The YB-17 could carry 8,000 pounds (3,629 kilograms) of bombs. Defensive armament consisted of five .30-caliber air-cooled machine guns.

Boeing YB-17 36-139 after landing accident, 7 December 1936.
Boeing YB-17 36-149 after landing accident, 7 December 1936. (Unattributed)

© 2018, Bryan R. Swopes

7 December 1928

“Louise Thaden in 1929, in front of the left wing of Beechcraft Travel Air 3000. She is wearing goggles around her neck, she is holding a leather flying helmet, and her left foot is resting on the wheel.” Louise Thaden with a Travel Air 3000 at Oakland Airport, circa 1929 (NASM-SI-83-2145)

7 December 1928: Flying a Travel Air 3000 biplane over Oakland, California, Iris Louise McPhetridge Thaden established an official Fédération Aéronautique Internationale (FAI) World Record for Altitude of 6,178 meters (20,269 feet).¹ Mrs. Thaden surpassed the record of 5,008 meters (16,430 feet) set by Lady Heath, just five days earlier, 2 December 1928.²

The Oakland Chapter of the National Aeronautic Association wanted to have all new U.S. records set at Oakland, and Mrs. Thaden’s altitude flight was a part of that campaign. Officials from the Oakland NAA group observed her flight in order to certify the record for the international body, the FAI.

Before altitude flight, Charles S. Nagel, NAA observer, w/ barograph (SDASM # WOF_00340

The Oakland Tribune reported:

AVIATRIX SETS WORLD RECORD

Oakland Pilot Breaks Mark for Women With Altitude of 25,400 Feet.

     Confident that she has established a new world’s altitude record for women fliers, Mrs. Louise McPhetridge Thaden, Oakland aviatrix, clyaims [sic] to have attained a height of 25,400 feet in her plane during a flight of one hour and fifty-five minutes over Oakland airport.

Mrs. Thaden took off from the local flying field at 2:30 p.m. yesterday in a Travelair [sic] biplane equipped with a 180-horsepower Hispano-Suiza motor. She carried two altimeters and a sealed barograph. One altimeter showed a height of 25,400 feet, while the other registered 23,100 feet. Either mark would be sufficient to break the record of 22,000 feet held by Lady Heath of London.

In the plane were a tank of oxygen and a mask which Mrs. Thaden found necessary to use at a height of 15,000 feet. She was dressed in a fur-lined flying suit, fur-lined boots, and wore a fur-lined helmet and gloves.

“It was awfully cold up there,” said Mrs. Thaden after landing at the airport. “The flight wasn’t difficult, and I believe I can establish a higher altitude mark than this one.”

The flight was conducted under supervision of the Oakland chapter, National Aeronautical [sic] Association, with Leo S. Nagle, local president, assisting. The sealed barograph will be sent to Washington, D.C., for official calibrating to make Mrs. Thaden’s flight official.

__________

     WICHITA, Kansas, Dec. 8.—(AP)—Mrs. Louise McPhetridge von Thaden, Oakland, Calif., aviatrix, who believes she has established a new altitude record for women fliers, learned to fly while she was in Wichita working as a saleswoman for a local company. She came here from Bentonville, Ark., where she formerly taught school.

Walter Beech, president of the airplane manufacturing company which built the plane Mrs. Thaden used in her altitude flight, said he picked as a person having natural ability for flying after she had only 10 hours of instruction in the air.

Oakland Tribune, Vol. CIX, No. 161, Saturday, 8 December 1928, Page 1, Column 6

Thaden/oxygen system (University of Arkansas Library, Women in Arkansas Collection ualr-ph-0067_na_na_pho0049)

Because of the altitudes at which she intended to fly, Mrs. Thaden carried a cylinder of pressurized oxygen and face mask. In her autobiography, she wrote:

Louise Thaden after her record flight (CTIE Monash University)

. . . Every foot of altitude was a battle. “Come on baby,” I breathed, “Just a hundred feet more! You can do it—just a hundred feet more. Come on, baby—hunnert—feet—.”

     There was a ringing in my ears, a far away, dim, yet sharply ringing like the sound you hear coming out from under ether. The plane was nose down, turning in wide, fast circles, engine bellowing protestingly under wide-open throttle.

     Automatically easing the throttle back and giving back pressure on the stick, I glanced at the altimeter: 16,200 feet. I fumbled clumsily and my numb fingers succeeded in prying the frozen mass of ice and mask from my face. Fresh air tasted good as I breathed in long, hard, deep, gulps. The plane weaved crazily.

     I thought, “I must have passed out.”

High, Wide, and Frightened, by Louise McPhetridge Thaden. University of Arkansas Press, Fayetteville, 2004. Chapter 2, Page 24

Douglas Warren congratulates Louise Thaden, still seated in the cockpit of the Travel Air 3000. (SDASM # WOF_00350)

Louise McPhetridge had been employed by Walter Beech as a sales representative for his Travel Air Manufacturing Company at Wichita, Kansas, and he included flying lessons with her employment. Beech asked her to go to Oakland as an employee of Douglas C. Warren, the new Travel Air dealer for the western region of the United States. He included flying lessons with her employment. (Warren owned the airplanes used by Mrs. Thaden to set her altitude and endurance records.) She received her pilot’s license from the National Aeronautic Association, signed by Orville Wright, 16 May 1928.

Once in California, Miss McPhetridge met an aeronautical engineer, Herbert von Thaden,³ and they were married on 21 July 1928.

“Louise in the Hisso-powered Travel Air N5425 used for the Altitude Record.” (High, Wide and Frightened, by Louise McPhetridge Thaden, the University of Arkansas Press, 2004, at Page 22. NASM SI-89-21985)

The airplane flown by Mrs. Thaden for her altitude record was a Travel Air 3000, registration NC5425, serial number 514. The Travel Air 3000 was a single-engine, three-place, single-bay biplane with fixed landing gear. The airplane was 24 feet, 3 inches (7.391 meters) long, with an upper wing span of 34 feet, 8 inches (10.566 meters), and lower span of 28 feet, 8 inches (8.738 meters). The airplane had an overall height of 9 feet, 0 inches (2.743 meters). The 3000 had an empty weight of 1,664 pounds (755 kilograms), and gross weight of 2,590 pounds (1,175 kilograms).

Travel Air 3000 NC6406, front view

Travel Air biplanes could be ordered with several different air-cooled or water-cooled engines, such as the Curtiss OX-5, the 120 h.p. Fairchild Caminez 4-cylinder radial, or the Wright Whirlwind. The 3000 was equipped with a liquid-cooled, normally-aspirated Hispano-Suiza 8Ac V-8 (according to FAI records). For the record flight the engine was replaced with a “souped-up” engine.

The Travel Air 3000 had a cruise speed of 105 miles per hour (169 kilometers per hour), and a maximum speed of 119 miles per hour (192 kilometers per hour). Its service ceiling was 17,000 feet (5,182 meters), and the maximum range was 400 miles (644 kilometers).

The Travel Air Manufacturing Company built approximately 50 of the “Hisso-powered” Travel Air 3000 variant.

Travel Air 3000 NC6406, left side view
Uncased barograph from Louise Thaden’s altitude record flight.(SDA&SM)

¹ FAI Record File Number 12221

² FAI Record File Number 12212

³ Herbert von Thaden had founded the Thaden Metal Aircraft Company, builder of the all-metal Thaden T-1, T-2, and the T-4 Argonaut. Thaden went on to design molded plywood furniture for the Thaden-Jordan Furniture Corporation. His designs are considered to be works of art, and individual pieces sell for as much as $30,000 today.

© 2019, Bryan R. Swopes