Tag Archives: Test Pilot

8 June 1966

XB-70A-2-NA Valkyrie 62-0207 leading a formation of aircraft powered by General Electric engines. Joe Walker’s F-104 is just below the B-70’s right wing tip. (U.S. Air Force)

8 June 1966: During a publicity photo formation flight, a Lockheed F-104N Starfighter, N813NA, flown by NASA Chief Research Test Pilot Joseph A. Walker, was caught in the wingtip vortices of the North American Aviation XB-70A-2 Valkyrie, 62-0207, the second prototype Mach 3+ strategic bomber. The Starfighter rolled up and across the Valkyrie. The two airplanes collided, with the F-104 taking off the Valkyrie’s vertical fins, then exploding.

Lockheed F-104N N813NA collided with North American Aviation XB-70A-2 Valkyrie 62-0207 and exploded, 8 June 1966. (U.S. Air Force)

The Valkyrie continued to fly straight and level for 16 seconds before it began to roll inverted. The B-70’s pilot, Alvin S. White, was able to eject, though he was severely injured. Joe Walker and B-70 co-pilot Major Carl S. Cross, United States Air Force, were killed.

The B-70 is out of control and going down in this photograph. Fuel is spraying out of damaged tanks. (U.S. Air Force)
The B-70 is out of control and going down in this photograph. A large section of the left wing is missing. JP-8 fuel is spraying out of damaged tanks. (U.S. Air Force)

Still photographs and motion picture film of the formation were being taken from Clay Lacy’s Gates Lear Jet. The photos were for a General Electric publicity campaign showing U.S. military aircraft that were powered by GE engines. Air Force procedures for requesting and approval of publicity flights were not properly followed and it is likely this flight would not have been approved had they been.

XB-70A-2 Valkyrie has rolled inverted and pitched nose down. (U.S. Air Force)
The XB-70A-2 Valkyrie has rolled inverted and pitched nose down. The outer section of the left wing is missing. The trailing edge and tip tank of the Lear Jet photo plane’s right wing are in the foreground. (U.S. Air Force)

Reportedly, just prior to the collision, Walker radioed, “I’m opposing this mission. It is too turbulent and it has no scientific value.”

The wreckage of the North American Aviation XB-70A-2 Valkyrie 62-0207 burnds on the desert floor, north of Barstow, california, 8 June 1968. (U.S. Air Force)
The wreckage of the North American Aviation XB-70A-2 Valkyrie 62-0207 burns on the desert floor at N. 35° 03′ 47″, W. 117° 01′ 27″, north of Barstow, California, 8 June 1966. (U.S. Air Force)

© 2016, Bryan R. Swopes

8 June 1959, 16:38:40 GMT

Scott Crossfield prepares for a flight in the North American Aviation X-15A.

8 June 1959: At Edwards Air Force Base, California, North American Aviation’s Chief Engineering Test Pilot, A. Scott Crossfield, made the first flight of the X-15A hypersonic research rocketplane.

56-6670 was the first of three X-15s built for the U.S. Air Force and NASA. It was airdropped from a Boeing NB-52A Stratofortress, 52-003, at 37,550 feet (11,445 meters) over Rosamond Dry Lake at 08:38:40 a.m, Pacific Daylight Time.

This was an unpowered glide flight to check the flying characteristics and aircraft systems, so there were no propellants or oxidizers aboard, other than hydrogen peroxide which powered the pumps and generators.

The aircraft reached 0.79 Mach (522 miles per hour, 840 kilometers per hour) during the 4 minute, 56.6 second flight.

North American Aviation Chief Engineering Test Pilot Albert Scott Crossfield in the cockpit of X-15A 56-670 before a flight. (NASA)
North American Aviation Chief Engineering Test Pilot Albert Scott Crossfield in the cockpit of an X-15 before a flight. (LIFE Magazine via Jet Pilot Overseas)

In his autobiography, Scott Crossfield described the first flight:

“Three” . . . “Two” . . . “One” . . .

“DROP”

Inside the streamlined pylon, a hydraulic ram disengaged the three heavy shackles from the upper fuselage of the X-15. They were so arranged that all released simultaneously, and if one failed they all failed. The impact of the release was clearly audible in the X-15 cockpit. I heard a loud “kerchunk.”

X-15A 56-6670 under the wing of NB-52A 52-003 at high altitude. Scott Crossfield is in the cockpit of the rocketplane. Air Force Flight Test Center History Office, U.S. Air Force)
X-15A 56-6670 under the wing of NB-52A 52-003 at high altitude. Scott Crossfield is in the cockpit of the rocketplane. (Air Force Flight Test Center History Office, U.S. Air Force)

The X-15 hung in its familiar place beneath the pylon for a split second. Then the nose dipped sharply down and to the right more rapidly than I had anticipated. The B-52, so long my constant companion, was gone. The X-15 and I were alone in the air and flying 500 miles an hour. In less than five minutes I would be on the ground. . . .

There was much to do in the first hundred seconds of flight. First I had to get the “feel” of the airplane, to make certain it was trimmed out for landing just as any pilot trims an airplane after take-off or . . . when dwindling fuel shifts the center of gravity. Then I had to pull the nose up, with and without flaps, to feel out the stall characteristics, so that I would know how she might behave at touchdown speeds . . . My altimeter unwound dizzily: from 24,000 to 13,000 feet in less than forty seconds. . . .

X-15A 56-6670 drops from the wing of the B-52 mothership. This is a glide flight as there is no frost from cryogenic propellants showing of the fuselage. The vapor trail is from hydrogen peroxide that powers the aircraft power systems. Note the roll to the right as the X-15 drops from the pylon. (NASA)
X-15A 56-6670 drops from the wing of the B-52 mothership, 8 June 1959. The vapor trail is from venting hydrogen peroxide used to power the aircraft pumps and generators. Note the roll to the right as the X-15 drops away from the Stratofortress. (NASA)

The desert was coming up fast. At 600 feet altitude I flared out. . . .

In the next second without warning the nose of the X-15 pitched up sharply. It was a maneuver that had not been predicted by the computers, an uncharted area which the X-15 was designed to explore. I was frankly caught off guard. Quickly I applied corrective elevator control.

The nose went down sharply. But instead of leveling out, it tucked down. I applied reverse control. The nose came up but much too far. Now the nose was rising and falling like a skiff in a heavy sea. Although I was putting in maximum control I could not subdue the motions. The X-15 was porpoising wildly, sinking toward the desert at 200 miles an hour. I would have to land at the bottom of an oscillation, timed perfectly; otherwise, I knew, I would break the bird. I lowered the flaps and the gear. . . .

. . . With the next dip I had one last chance and flared again to ease the descent. At that moment the rear skids caught on the desert floor and the nose slammed over, cushioned by the nose wheel. The X-15 skidded 5,000 feet across the lake, throwing up an enormous rooster tail of dust. . . .

Always Another Dawn: The Story of a Rocket Test Pilot, by A. Scott Crossfield and Clay Blair, Jr., The World Publishing Company, Cleveland and New York, 1960, Chapter 37 at Pages 338–342.

This photograph shows the second North American Aviation X-15A, 56-6671, flaring to land on Rogers Dry Lake, Edwards Air Force Base, California The rear skids are just touching down. The white patches on the aircraft's belly is frost from residual cryogenic propellants remaining in its tanks. (U.S. Air Force)
This photograph shows the second North American Aviation X-15A, 56-6671, flaring to land on Rogers Dry Lake, Edwards Air Force Base, California. The rear skids are just touching down. The white patches on the aircraft’s belly are frost from residual cryogenic propellants remaining in its tanks after a powered flight. (U.S. Air Force)

Before the drop, it was discovered that the aircraft’s Stability Augmentation System was inoperative in pitch mode. During the flight it was found that the hydraulic-assisted flight control system was responding too slowly to Crossfield’s inputs. Engineers analyzed the problem and increased the hydraulic system pressure. The problem never recurred.

Scott Crossfield was the world’s most experienced rocketplane pilot with 82 rocketplane flights before the X-15 program. “. . . he was intimately involved in the design of the aircraft and contributed immensely to the success of the design.”

At The Edge Of Space, by Milton O. Thompson, Smithsonian Institution Press, 1992, Introduction, at Page 3.

North American Aviation X-15A 56-6670 made the first glide flight and the first and last powered flights of the X-15 Program. It made a total of 82 of the 199 X-15 flights. 56-6670 is in the collection of National Air and Space Museum at Washington, D.C.

A. Scott Crossfield, wearing a David Clark Co. XMC-2 full-pressure suit, which he helped to design and test, with the first of three North American X-15s, 56-6670. (North American Aviation, Inc.)

© 2015, Bryan R. Swopes

5 June 1948

Northrop YB-49 42-102368. (U.S. Air Force)

5 June 1948: Flying at 40,000 feet (12,192 meters), north of Muroc Air Force Base, California, the second Northrop YB-49 “flying wing,” serial number 42-102368, was undergoing stall recovery performance testing with a crew of five aboard. The pilot was Major Daniel A. Forbes, Jr., United States Air Force, and the co-pilot was Captain Glen W. Edwards.

The aircraft suffered a catastrophic structural failure with the outer wing panels tearing off. The experimental airplane crashed approximately 10 miles (16 kilometers) east of the small desert town of Mojave. The entire crew, which included 1st Lieutenant Edward L. Swindell, flight engineer, and civilian engineers Charles H. LaFountain and Clare C. Lesser, were killed.

Northrop YRB-49A 42-102369, the sole six-engine reconnaissance prototype. Note the engine mounted in a pod below the wing’s leading edge. (U.S. Air Force)

The YB-49 was an experimental jet engine-powered bomber, modified from a propeller-driven Northrop XB-35. It was hoped that the all-wing design would result in a highly efficient airplane because of its very low drag characteristics. However, the design could be unstable under various flight conditions.

A few months after the crash, the first YB-49 was destroyed in a taxiing accident and the project cancelled. It would be 41 years before the concept would be successful with the Northrop B-2 Spirit.

Northrop YB-49 42-102367. (U.S. Air Force)

42-102367 had been converted from the second YB-35 pre-production test aircraft. The original Flying Wing’s four Pratt & Whitney Wasp Major (R-4360-21) radial engines were replaced by eight Allison J35-A-15 turbojet engines and several aerodynamic improvements were made. The change to jet power  increased the airplane’s speed by about 100 miles per hour (161 kilometers per hour) and significantly reduced the vibrations caused by the reciprocating engines, drive shafts and counter-rotating propellers.

The YB-49 was a very unusual configuration for an aircraft of that time. There was no fuselage or tail control surfaces. The crew compartment, engines, fuel, landing gear and armament was contained within the wing. Air intakes for the turbojet engines were placed in the leading edge of the wing. The exhaust nozzles were at the trailing edge. Four small vertical fins for improved yaw stability were also at the trailing edge.

The fins were likely too small. Test pilots complained about the airplane’s instability, which made it difficult to maintain course or altitude. A stability augmentation system was required.

Northrop YB-49 (U. S. Air Force)

The YB-49 had a length of 53 feet, 1 inch (16.180 meters), wingspan of 172 feet, 0 inches (52.426 meters) and overall height of 15 feet, 2 inches (4.623 meters). It weighed 88,442 pounds (40,117 kilograms) empty, and its maximum takeoff weight was 193,938 pounds (87,969 kilograms).

The Wing defined the airplane. It had an aspect ratio of 7.4:1. The wing’s root chord was 37 feet, 6 inches (11.430 meters). The wing was 7 feet, 1.5 inches (2.172 meters) thick at the root. The tip chord was 9 feet, 4 inches (2.844 meters). There was 0° angle of incidence at the root, -4° at the wing tips, and 0° 53′ dihedral. The leading edge was swept aft 26° 57′ 48″, and the trailing edge, 10° 15′ 22″. The wing’s total area was 4,000 square feet (371.6 square meters).

Northrop YB-49

The YB-49 was powered by eight General Electric-designed, Allison Engine Company-built J35-A-15 engines. The J35 was a single-spool, axial-flow turbojet engine with an 11-stage compressor section and single-stage turbine. The J35-A-15 was rated at 3,270 pounds of thrust (14.55 kilonewtons) at 7,400 r.p.m., Normal Power, and a Maximum (Military Power) rating of 3,750 pounds of thrust (16.68 kilonewtons) at 7,700 r.p.m. The engine was 14 feet, 0.0 inches (4.267 meters) long, 3 feet, 4.0 inches (1.016 meters) in diameter and weighed 2,400 pounds (1,089 kilograms).

Cruise speed for the YB-49 was 429 miles per hour (690 kilometers per hour). Its maximum speed 499 miles per hour (802 kilometers per hour) at 18,000 feet (5,486 meters) was restricted by Mach number. The airplane could climb from Sea Level to 30,000 feet (9,144 meters) in 21.0 minutes. It had a service ceiling of 49,700 feet (15,149 meters). The YB-49 had a combat radius of 1,611 miles (2,593 kilometers) at 420 miles per hour (676 kilometers per hour), carrying a 10,000 pound (4,536 kilogram) bomb load.

The YB-49 had no defensive armament. It could carry a maximum bomb load of 16,000 pounds (7,257 kilogram) in its internal bomb bay. (Turbulence resulting from open bomb bays significantly decreased bombing accuracy.)

Only two Northrop YB-49s were built. They were tested by Northrop and the Air Force for nearly two years. A third XB-35, 42-102369, was converted to a reconnaissance variant with an additional two engines mounted in pods below the leading edge of the wing, and designated YEB-49A.Although an additional nine YB-35s were ordered converted, the B-49 was not placed into production.

Northrop YB-49.
Daniel H, Forbes, Jr., 1940

Daniel Hugh Forbes, Jr., was born at Carbondale, Kansas, 20 June 1920. He was the son of Daniel Hugh Forbes, a farmer, and Hattie Rundle Forbes. He attended North High School in Wichita Kansas, and then the Kansas State College at Manhattan, Kansas,

Maj. Daniel Forbes, Jr., USAF

Daniel Forbes enlisted in the United States Army as an aviation cadet at Fort Riley, Kansas, 23 May 1941. On 9 January 1942, he was commissioned a second lieutenant, Air Reserve. Forbes was promoted to the rank of 1st lieutenant, Army of the United States, 25 August 1942, and to captain, A.U.S., 15 August 1944. On 4 October 1945, he was promoted to major, A.U.S.

Major Forbes married Mrs. Edward C. Winkle (née Hazel Marie Moog), 11 March 1948. Her first husband, a 1st lieutenant assigned to the 314th Infantry Regiment, 79th Infantry Division, was killed in action in France, 1 October 1944. Less than three years later, Mrs. Hughes was a widow again.

Major Daniel Hugh Forbes, Jr., Air Corps, United States Army.

Glen Walter Edwards was born at Medicine Hat, Alberta, Canada, 5 March 1916, the second son of Claude Gustin Edwards, a real estate salesman, and Mary Elizabeth Briggeman Edwards. The family immigrated to the United States in August 1923 and settled near Lincoln, California. He attended Lincoln High School, where he was a member of the Spanish Club and worked on the school newspaper, “El Eco.” He graduated in 1936.

Lt. Glen W. Edwards

Edwards attended Placer Junior College, Auburn, California, before transferring to the University of California, Berkeley. He graduated in 1941 with a Bachelor of Arts (A.B.) degree, and then enlisted in the United States Army as an aviation cadet, 16 July 1941.

Following pilot training, Edwards was commissioned as a second lieutenant, Air Reserve, 6 February 1942. He was promoted to 1st lieutenant, Army of the United States, 16 September 1942. Lieutenant Edwards flew 50 combat missions in the Douglas A-20 Havoc light bomber with the 86th Bombardment Squadron (Light), 47th Bomb Group, in North Africa and fought at the Battle of the Kasserine Pass, 19–24 February 1943. He was next promoted to captain, 28 April 1943. He also flew during the invasion of Sicily, in late 1943.

Two U.S. Army Air Force Douglas A-20B-DL Havoc light bombers, 41-3014 and 41-3134, in Tunisia, 1943. (U.S. Air Force)

Edwards returned to the United States and was assigned to the Pilot Standardization Board, but was then sent to train as a test pilot at Wright Field. Captain Edwards was assigned as a test pilot in 1944 and tested the Northrop XB-35 and Convair XB-36. After World War II came to an end the U.S. Army and Air Corps were demobilized to 1/16 of their peak levels (from 8,200,000 to 554,000). Edwards was retained but reverted to the rank of 1st lieutenant. He had been awarded the Distinguished Flying Cross and the Air Medal with three oak leaf clusters (four awards). He was transferred to the United States Air Force after it was established as a separate service, 18 September 1947.

Glen Edwards was recommended to fly the Bell X-1 rocket plane, but when that assignment went to Chuck Yeager, Edwards was sent to Princeton University, Princeton, New Jersey, to study aeronautical engineering. He earned a masters degree in engineering (M.S.E.) in 1947.

Captain Glen Walter Edwards, Air Corps, United States Army.

Following the crash of the YB-49, Topeka Air Force Base in Kansas was renamed Forbes Air Force Base. Muroc Air Force Base was renamed Edwards Air Force Base in honor of Captain Edwards.

Captains Edwards’ remains were buried at the Lincoln Cemetery, Lincoln, California.

Edwards Air Force Base, California, looking northeast, photographed in 2007. (U.S. Air Force)

Edward Lee Swindell was born at Currituck, North Carolina, 22 April 1916. He was the son of Rudolph Bridgman Swindell, a machinist’s helper at the Portsmouth Navy Yard, and Eula Belle Williams Swindell.

Edward L. Swindell married Miss Edna Irene Hayman, 2 January 1942 at South Mills, North Carolina.

Swindell enlisted in the U.S. Army at Camp Lee, Virginia, 17 March 1942. He was 5 feet, 9 inches (1.75 meters) tall and weighed 156 pounds (70.7 kilograms).

Lieutenant Swindell’s remains were buried at the Forest Lawn Cemetery, Norfolk, Virginia.

Charles H. LaFountain was born 12 June 1925 in New York. He was the son of Leo L. LaFountain and Gladys Ethel Taylor LaFountain. He had served in the United States Navy and was a civilian employee of the Air Force. His remains were buried at the Lake Luzerne Cemetery, Lake Luzerne, New York.

Clare C. Lesser was born 27 June 1925 at Joliet, Illinois. He was the fifth of five children of Henry J. Leser, a worker at a wire mile, and Alvina Leser. Leser served as an ensign in the United States Naval Reserve. Like LaFountain, he was also a civilian employee of the Air Force. His remains were buried at St. John’s Cemetery, Joliet, Illinois.

© 2018, Bryan R. Swopes

4 June 1954

Major Arthur Warren "Kit" Murray, U.S. Air Force, with the Bell X-1A at Edwards AFB, 20 July 1954. Major Murray is wearing a David Clark Co. T-1 capstan-type partial-pressure suit with a K-1 helmet. (NASA)
Major Arthur Warren “Kit” Murray, U.S. Air Force, with the Bell X-1A at Edwards AFB, 20 July 1954. Major Murray is wearing a David Clark Co. T-1 capstan-type partial-pressure suit with a K-1 helmet. (NASA)

4 June 1954: at Edwards Air Force Base, California, Major Arthur W. “Kit” Murray flew the experimental Bell X-1A research rocketplane to an altitude of 89,810 feet (27,374 meters). He flew high enough that the sky darkened and he was able to see the curvature of the Earth. Newspapers called him “America’s first space pilot.”

The X-1A reached Mach 1.97. Encountering the same inertial coupling instability as had Chuck Yeager, 20 November 1953, though at a lower speed, the X-1A tumbled out of control. The rocket plane lost over 20,000 feet (6,100 meters) altitude before Murray could regain control. For this accomplishment, Major Murray was awarded the Distinguished Flying Cross.

One week earlier, 28 May 1954, Murray had flown the X-1A to an unofficial world record altitude of 90,440 feet (27,566 meters).

Arthur Murray, 1936. (The Argus)

Arthur Warren Murray was born at Cresson, Cambria County, Pennsylvania, 26 December 1918. He was the first of two children of Charles Chester Murray, a clerk, and Elsie Espy Murray.

Arthur Murray attended Huntingdon High School, Huntingdon, Pennsylvania, graduating 4 June 1936, and then studied Juniata College, also in Huntingdon, 1937–1938.

Arthur Murray, 1938. (The Nineteen Thirty-Seven Alfarata)

Kit Murray enlisted in the Field Artillery, Pennsylvania National Guard, 17 November 1939. (Some sources state that he served in the U.S. Cavalry.) Murray had brown hair and blue eyes, was 5 feet, 10 inches (1.78 meters) tall and weighed 150 pounds (68 kilograms). Following the United States’ entry into World War II, Sergeant Murray requested to be trained as a pilot. He was appointed a flight officer (a warrant officer rank), Army of the United States, on 5 December 1942. On 15 October 1943 Flight Officer Murray received a battlefield promotion to the commissioned rank of second lieutenant, A.U.S.

Between 6 January  and 22 October 1943, Murray flew over 50 combat missions in the Curtiss-Wright P-40 Warhawk across North Africa. After about ten months in the Mediterranean Theater, he returned to the United States, assigned as an instructor flying the Republic P-47 Thunderbolt fighter bomber, stationed at Bradley Field, Hartford, Connecticut.

Republic P-47 Thunderbolts at Bradley Field, Connecticut, 9 September 1944. (U.S. Air Force)

Lieutenant Murray married Miss Elizabeth Anne Strelic, who had immigrated from Czechoslovakia with her family as an infant, at Atlantic City, New Jersey, 29 December 1943. They would have six children, and foster a seventh. They later divorced. (Mrs. Murray died in 1980.)

Lieutenant and Mrs. Arthur W. Murray, 1943. (Murray Family Collection)

Murray was promoted to 1st lieutenant, A.U.S., 8 August 1944. His next assignment was as a maintenance officer. He was sent to Maintenance Engineering School at Chanute Field, Rantoul, Illinois, and from there to the Flight Test School at Wright Field, Dayton, Ohio.

Murray was the first test pilot to be permanently assigned to Muroc Army Air Field (later, Edwards Air Force Base). Other test pilots, such as Captain Chuck Yeager, were assigned to Wright Field and traveled to Muroc as necessary.

Murray’s A.U.S. commission was converted to first lieutenant, Air Corps, United States Army, on 19 June 1947, with date of rank retroactive to 15 October 1946. The U.S. Air Force became a separate military service in 1947, and Lieutenant Murray became an officer in the new service.

Major Arthur Warren (“Kit”) Murray, United States Air Force, with a Northrop F-89 Scorpion interceptor, 1954. (The New York Times)

Murray was involved in testing new Air Force fighters such as the Bell P-59 Airacomet, Lockheed P-80 Shooting Star, Republic P-84 Thunderjet, McDonnell XF-88 Voodoo; and the Douglas XB-43 Jetmaster and North American Aviation B-45 Tornado jet bombers. He also flew the experimental aircraft such as the X-1A, X-1B, X-4 and X-5. Murray spent six years at Edwards before going on to other assignments.

Colonel Arthur Warren (“Kit”) Murray, U.S. Air Force.

Later, 1958–1960, Major Murray was the U.S. Air Force project officer for the North American Aviation X-15 hypersonic research rocketplane at Wright Field.

Colonel Murray retired from the U.S. Air Force in 1961. He next worked for Boeing in Seattle, Washington, from 1961 to 1969, and then Bell Helicopter in Texas.

On 4 April 1975, Kit Murray married his second wife, Ms. Ann Tackitt Humphreys, an interior decorator, in Tarrant County, Texas.

Colonel Arthur Warren Murray, United States Air Force (Retired), died at West, Texas, 25 July 2011, at the age of 92 years.

NASA 800, a highly modified Boeing B-29 Superfortress, carries the Bell X-1A to altitude over Edwards AFB. (NASA)
A highly modified Boeing B-29 Superfortress carries the Bell X-1A to altitude over Edwards AFB. (U.S. Air Force)

The Bell X-1A was a follow-on project to the earlier X-1. It was designed and built by the Bell Aircraft Corporation at Buffalo, New York, to investigate speeds above Mach 2 and altitudes above 90,000 feet (27,432 meters). It was carried to altitude by a modified Boeing B-29 Superfortress, then dropped for the research flight.

The rocketplane was 35 feet, 7 inches (10.846 meters) long with a wingspan of 28 feet (8.534 meters) and overall height of 10 feet, 8 inches (3.251 meters). It had an empty weight of 6,880 pounds (3,120.7 kilograms) and gross weight of 16,487 pounds (7,478.3 kilograms).

The X-1A was powered by a Reaction Motors XLR-11-RM-5 four-chamber rocket engine which produced 6,000 pounds of thrust. It had a maximum speed of Mach 2.44 (Yeager) and reached an altitude of 90,440 feet (27,566.1 meters) (Murray).

Bell X-1A 48-1384. (U.S. Air Force)
Bell X-1A 48-1384. (U.S. Air Force)

The X-1A was destroyed by an internal explosion, 20 July 1955.

© 2018, Bryan R. Swopes

2 June 1941

Consolidated Aircraft Corporation Model LB-30, Liberator B Mk.II, AL503 (SDASM Archives)

2 June 1941: Great Britain had been at war with Germany for 21 months. Its need for military equipment far exceeded the capacity of British industry, so the Empire looked across the North Atlantic Ocean to its former colonies, the United States of America.

The Royal Air Force ordered 140 Liberator B Mk.II bombers from Consolidated Aircraft Corporation of San Diego, California. The Consolidated Model LB-30 was a variant of the U.S. Army Air Corps B-24 four-engine long-range heavy bomber, but was built expressly for the RAF and had no direct Air Corps equivalent.

AL503 was the first Liberator Mk.II. It had made its first flight 26 May 1941, and was ready to be turned over to the Royal Air Force.

AL503 crashed on its acceptance flight, 2 June 1941. The aircraft was destroyed and all five on board were killed.

Consolidated LB-32, Liberator B Mk.II, AL503, photographed 2 June 1941—the same day it crashed. (Consolidated Aircraft Corporation)
Consolidated Model LB-30, Liberator B Mk.II, AL503, photographed 2 June 1941—the same day it crashed. The four-gun upper turret is visible. The bomb bay is open. (Consolidated Aircraft Corporation)

The Associated Press reported the accident:

Big Bomber Made for Britain Crashes in San Diego Bay; Four Members of Crew Perish

SAN DIEGO, Calif., June 2—(AP)—A $250,000 four-motored Consolidated bomber crashed and sank in San Diego Bay today, shortly after taking off from Lindbergh Field. Consolidated Aircraft Corp. officials said four of the crew members apparently perished.

The 25-ton craft was camouflaged and ready for delivery to Great Britain.

William B. Wheatley, 39, Chester, N.Y., chief test pilot for the Consolidated Aircraft Corp., apparently was at the controls. The Navy had taken over rescue operations, and details and names of crew members were not immediately available.

Witnesses said the huge plane left the airport on what appeared to be a normal takeoff, but that the bomber pulled up steep into a vertical climb instead of leveling off. At about 500 feet the plane apparently was in a stall.

The bomber then fell off to the left, and nosed down and the pilot, using the throttle appeared to have recovered. This difficulty was experienced over the airport, but by the time the pilot apparently had regained control of the craft it was flying over the water an an altitude of about 100 feet, the bomber again fell off to the left and the wing struck the water.

A Consolidated spokesman said the crash had “evidence of sabotage.”

The spokesman said the $250,000, 25-ton land bomber had been “thoroughly tested, and things like that just don’t happen.”

Believed dead were:

William Wheatley, 39, Chester, N.Y., chief test pilot for the company.
Allen T. Austen, 28, Kansas City, Mo., assistant test pilot.
Bruce K. Craig, 27, Chicago, engineer.
William H. Rieser, 33, Cambridge, Mass.
Lewis M. McAannon, 25, Woodstock, Ill., chief mechanic, was seriously injured. ¹

The bodies of Wheatley, Craig and Austin had not been recovered from the shattered bomber.

The impact with the water shattered the bomber, witnesses said, and it sank. Navy and small fishing vessels went to the rescue. The plane went down in an area between the San Diego shoreline and the naval air station.

The bomber, called “Liberator” by the Royal Air Force, was of all-metal construction, and its type is regarded as one of the most advanced military weapons. The Liberator can travel 230 miles an hour with a full bomb load over a 3,000 mile range. Orders for the huge land bomber originally were placed by the French, then taken over by the British.

The first B-24 was delivered to the British last Feb. 15 when the craft Consolidated Aircraft officials said established a record non-stop transcontinental flight of 9 hours, 57 minutes for planes of more than 5,000 pounds gross weight.

—The Eugene Guard, Vol. 50, No. 152, Monday, June 2, 1941, at Page 1 Column 6 and Page 2, Column 2

This aerial photograph of Lindbergh Field, San Diego, California, shows the location of the PB4Y-2 crash site, and nearby, the position where the outer wing panel was found. (U.S. Navy)
This is a 1944 aerial photograph of Lindbergh Field, San Diego, California, part of an investigation of the crash of a brand-new Consolidated PB4Y-2 Privateer. The Pacific Ocean is at the upper left corner of the image. (U.S. Navy)

The Consolidated B-24 had first flown 29 December 1939. Chief Test Pilot Bill Wheatley was in command. Designed as a long-range heavy bomber for the U.S. Army Air Corps, it was a high-wing, four-engine monoplane with dual vertical fins and rudders. It had retractable tricycle landing gear. The bomber was flown by two pilots, with the crew including a navigator, bombardier, radio operator and several gunners.

The Royal Air Force Liberator B. Mk.I was essentially a B-24A. The Liberator Mk.II, though,  was lengthened by extending the nose in front of the cockpit by 3 feet (0.914 meters). It was equipped with two power-operated gun turrets, one at the top of the fuselage, just aft of the wing, and a second at the tail.

The Liberator Mk.II was 66 feet, 4 inches (20.218 meters) long with a wingspan of 110 feet, 0 inches (33.528 meters) and overall height of 18 feet, 0 inches (5.486 meters). It was heavier than the Mk.I as a result of the longer fuselage and the heavy power turrets. The maximum gross weight was 64,250 pounds (29,143 kilograms).

Consolidated LB30 Liberator II
Consolidated Model LB-30, Liberator B Mk.II

The LB-30/Mk.II was powered by four air-cooled, supercharged 1,829.4-cubic-inch-displacement (29.978 liter) Pratt & Whitney Twin Wasp S3C4-G (R-1830-33) two-row fourteen-cylinder radial engines. These had a normal power rating of 1,100 horsepower at 2,550 r.p.m. to 6,100 feet (1,859 meters) and 1,000 horsepower at 2,700 r.p.m at 14,500 feet. The takeoff/military power rating was 1,200 horsepower at 2,700 r.p.m. to 5,000 feet (1,524 meters). The engines drove three-bladed Curtiss Electric variable-pitch propellers through a 2:1 gear reduction. The R-1830-33 was 4 feet, 0.06 inches (1.221 meters) in diameter and 5 feet, 3.48 inches (1.612 meters) long. It weighed 1,480 pounds (671 kilograms).

The Liberator Mk.II had a maximum speed of 263 miles per hour (423 kilometers per hour) at 15,000 feet (4,572 meters). Its service ceiling was 24,000 feet (7315 meters).

As was common with British bombers, the Liberator Mk.II was defended by Browning .303 Mk.II (7.7 × 56 mm) machine guns. Four were installed in the upper power turret and another four guns in the tail turret. Left and right waist positions each had two guns. One gun was mounted at the nose and one in the belly of the aircraft. This was a total of fourteen. The tail turret carried 2,200 rounds of ammunition and the top turret had 600 rounds.

Prime Minister Churchill's personal transport, "Commando," teh second Consolidated LB30 Liberator Mark II, AL504 © IWM (CH 14142)
Prime Minister Churchill’s personal transport, “Commando,” the second Consolidated LB30 Liberator Mark II, AL504. Its fuselage has been lengthened and tail surfaces from the PB4Y-2 Privateer installed. © IWM (CH 14142)

The second Liberator Mk.II, AL504, became the personal transport of Prime Minister Winston Churchill, who named it Commando. In 1944, the aircraft was modified to the single vertical fin configuration of the PB4Y-2 Privateer. Commando disappeared over the Atlantic in 1945.

William Ballentine Wheatley. (Photograph courtesy of Neil Corbett, Test and Research Pilots, Flight Test Engineers)

William Ballantine Wheatley was born at Chester, New York, 17 December 1902, the first of three children of William A. Wheatley, a public school superintendent, and Mabel Ballantine Wheatley. He was twice married, first, about 1927, to Esther Leary Wheatley, of Massachussetts. They had two children, Mary and William Thomas Wheatley. His second marriage was to Miss Grace Lenore Ray, 18 April 1935, at Washington, D.C. They would have a son, John, and two daughters, Grace and Charlotte Wheatley.

After two years of college, Wheatley joined the U.S. Army Air Corps as an aviation cadet, 3 March 1925. He trained as a pilot at Brooks Field, Texas, and was commissioned as a 2nd lieutenant, 13 March 1926. On 4 May 1927, Lieutenant Wheatley was assigned to the 118th Observation Squadron, 43rd Division, Air Service, at Hartford, Connecticut, as a pilot and observer. He served in the Air Corps Reserve until 1937.

In 1928, Wheatley went to work for the Pratt & Whitney Aircraft Company as a test pilot. He was an air mail pilot in 1928-1929, and then, in February 1929, he became a test pilot for Reuben H. Fleet’s Consolidated Aircraft Corporation at Buffalo, New York. In 1935, Consolidated moved to its new headquarters at Lindbergh Field, San Diego, California. Wheatley moved with it. He and his family lived in a 3 bedroom home about three miles northeast of the airport. In 1940, his salary as chief test pilot of Consolidated was $50,000 per year. ²

Following Wheatley’s death, Beryl Arthur Erickson was assigned as chief test pilot for Consolidated.

¹ Lewis McCannon also died as a result of the crash.

² Approximately equivalent to $1,119,814 U.S. dollars in 2024.

© 2018 Bryan R. Swopes