23 June 1924: Joseph Sadi-Lecointe set a Fédération Aéronautique Internationale (FAI) World Record for Speed Over a Distance of 500 Kilometers when he flew a Nieuport-Delâge NiD-42 S sesquiplane to an average speed of 306.70 kilometers per hour (190.57 miles per hour) at Istres, France.¹
Nieuport-Delâge NiD-42 S. (Fédération Aéronautique Internationale)
Two Nieuport-Delâge NiD-42 S racers were built by Société Nieuport-Astra. The airplane was a single-place, single-engine, strut-braced high-wing sesquiplane (“a plane-and-a-half”) with fixed landing gear. An airfoil was positioned between the wheels.
The NiD-42 S racer was 6.55 meters (21 feet, 5.9 inches) long and 2.20 meters (7 feet, 2.6 inches) high. The upper wingspan was 9.50 meters (31 feet, 2.0 inches) and the lower wing, 2.75 meters (9 feet, 0.3 inches). The vertical gap between the wings was 1.70 meters (5 feet, 6.9 inches). The lower “half wing” had an area of 1.60 square meters (17.22 square feet).
The racer’s empty weight was 1,170 kilograms (2,580 pounds), and gross weight was 1,440 kilograms (3,175 pounds).
Le sesquiplan Nieuport de Sadi-Lecointe sur lequel il realize son record de vitesse du monde. (L’AÉROPHILE, 1er-15 Octobre 1922, at page 294)
The fuselage was a wood monocoque assembly, built in two halves, using as many as six layers of 0.9 mm (0.04 inches) white wood strips, placed diagonally at alternating 90° angles. The completed fuselage was then covered in doped fabric. The upper wing was one built as one piece, using two spruce spars. The surfaces were plywood, covered with fabric. The struts were steel tubing with a streamlined cross section. Cylindrical Lamblin radiators were used for engine cooling, located under the fuselage. The lower “half-wing” was made of duralumin.
The NiD-42 S was powered by a water-cooled, supercharged, 18.473 liter (1,127.265 cubic inch displacement) Société Française Hispano-Suiza Type 42 (also referred to as the 8F series), a single overhead camshaft (SOHC) 90° V-8 engine with a compression ratio of 5.3:1. The standard normally-aspirated engine was rated at 320 horsepower, but Sadi-Lecointe’s was supercharged and required that benzol added to the fuel to prevent pre-ignition. When tested, the engine produced exactly 357.7 horsepower at 1,860 r.p.m. It was a direct-drive engine which turned a two-bladed fixed-pitch propeller.
The NiD-42 S had a maximum speed of 330 kilometers per hour (205 miles per hour) and maximum range of 500 kilometers (311 miles).
This left front quarter view of the NiD-42 S shows the lower airfoil between the landing gear wheels which gives the airplane the sesquiplane designation. (hydroretro)
Joseph Sadi-Lecointe learned to fly in 1910. The Aero Club de France awarded him its license number 431 on 10 February 1910.
He joined the Service Aéronautique (the original form of the French Air Force) as a mechanic in October 1912, and was designated pilote militaire nº375, 20 September 1913. He served as a pilot during World War I, flying the Blériot XI-2, Morane LA and Nieuprt X, then in December 1915 became a flight instructor at l’Ecole de Pilotage d’Avord.
Sadi-Lacointe was promoted from the enlisted ranks to sous-lieutenant, 17 September 1917, and was assigned as a test pilot at Blériot–Société Pour L’Aviation et ses Dérivés, where he worked on the development of the famous SPAD S.XIII C.1 fighter.
Joseph Sadi-Lecointe was a test pilot for the SPAD S.XIII C.1 fighter. (BnF)
After the War, he was a test pilot for Nieuport-Delâge, and participated in numerous races and set a series of speed and altitude records with the company’s airplanes.
Sadi-Lecointe returned to military service in 1925 and participated in the Second Moroccan War. Then in 1927, he returned to his position as chief test pilot for Nieuport-Delâge. From 1936 to 1940, he served as Inspecteur général de l’aviation civile (Inspector General of Aviation) for the French Air Ministry. With the outbreak of World War II in 1939, Lieutenant Colonel Sadi-Lecointe was again recalled to military service as Inspector of Flying Schools.
With the Fall of France, Sadi-Lacointe joined La Résistance française and operated with the group Rafale Andromède. He was captured and tortured by the Gestapo at Paris, and died as a result, 15 July 1944.
Joseph Sadi-Lecointe, Commandeur Ordre national de la Légion d’honneur, was awarded the Croix de Guerre in three wars. He was posthumously awarded the Médaille de la Résistance. The Aéro-Club de France awarded him its Grande Médaille d’Or de l’Aéro-Club de France. During his flying career, Sadi-Lecointe set seven World Records for Speed, and three World Records for Altitude.
Westland Chief Pilot Leonard Roy Moxham and Michael Ball. (FAI)
20–22 June 1972: Westland AH.1 Lynx, c/n 02/11, XX153, flown by then Westland Chief Pilot Leonard Roy Moxham and flight test engineer Michael Ball, set two Fédération Aéronautique Internationale (FAI) World Records for Speed. Flying over a straight 15/25 kilometer course on 20 June, the Lynx averaged 321.74 kilometers per hour (199.92 miles per hour).¹ Two days later, the Lynx flew a closed 100 kilometer circuit at an average speed of 318.50 kilometers per hour (197.91 miles per hour).² Both of these records were for helicopters in the 3,000–4,500 kilogram weight class.
XX153 is at the Museum of Army Flying, Middle Wallop, Hampshire, England.
The near helicopter is Westland Lynx XX153, the 1972 FAI World Speed Record Holder. (FAI)
Jacqueline Auriol climbs out of the cockpit of a Dassault Mirage IIIC. (Joyeux Magazine)
22 June 1962: At Istres, France, Société des Avions Marcel Dassault test pilot Jacqueline Marie-Thérèse Suzanne Douet Auriol flew a delta-winged Dassault Mirage III C interceptor to set a new Fédération Aéronautique Internationale (FAI) World Record for Speed Over a Closed Circuit of 100 Kilometers. Her average speed over the course was 1,850.2 kilometers per hour (1,149.7 miles per hour).¹ Mme. Auriol broke the record set 6 October 1961 by Jacqueline Cochran with a Northrop T-38A Talon.²
Dassault Mirage III C. (Dassault Aviation)
The Dassault Mirage III C was the first production variant of the Mirage series. It was a single-place, single-engine tailless-delta-wing interceptor designed for Armée de l’air (the French air force), with variants for export. It was designed as a light-weight fighter capable of Mach 2 speeds.
The Mirage III C was 45 feet, 5 inches (13,843 meters) long with a wingspan of 27 feet, 0 inches (8.230 meters) and height of 14 feet, 9 inches (4.496 meters.) The fuselage had a horizontal ellipse cross section and incorporated the Area Rule, similar to the delta wing Convair F-102A. The Mirage IIIC had an empty weight of 12,350 pounds (5,602 kilograms) and maximum takeoff weight of max gross 22,860 pounds (10,369 kilograms).
The interceptor’s low-mounted delta wings used trailing edge flight controls, with ailerons outboard, elevators at the center and small trim tabs inboard. The leading edges were swept aft to 60° 34′ and there was 2° 30′ anhedral. The total wing area was 366 square feet (34.00 square meters).
The Mirage III C was powered by a Société nationale d’études et de construction de moteurs d’aviation (SNECMA) Atar 09C single shaft, axial-flow turbo-réacteur (turbojet engine) with afterburner. The engine used a 9-stage compressor section and 2-stage turbine. It was rated at 9,430 pounds of thrust (41.947 kilonewtons), and 13,669 pounds (60.803 kilonewtons) with afterburner. The Atar 09C was 5.900 meters (19 feet, 4.28 inches) long, 1.000 meters (3 feet, 3.37 inches) in diameter and weighed 1,456 kilograms (3,210 pounds).
When configured as a high-altitude interceptor, the Mirage could be equipped with a hypergolic liquid fueled Société d’Études pour la Propulsion par Réaction SEPR 841 rocket engine mounted under the rear fuselage. When the booster pack not used, a small additional fuel tank would be mounted in the same position.
The Dassault Mirage III C could climb to 30,000 feet (9,144 meters) in 3 minutes, 60,000 feet (18,288 meters) in 6 minutes, 10 seconds, and reach 72,000 feet (21,946 meters) in 9 minutes. It had an economical cruise speed of 0.9 Mach at 40,000 feet (12,192 meters), and maximum speed of Mach 2.3 at 36,000 feet (10,973 meters). The maximum range with external fuel tanks was 1,850 miles (2977 kilometers).
The interceptor was equipped with search radar and a missile targeting computer. Armament consisted of a modular gun pack with two Direction des Études et Fabrications d’Armement (DEFA) 5-52 autocannon with 125 rounds of ammunition per gun (the targeting computer had to be removed for this installation). A Nord AA.20 guided air-to-air missile could be carried under the fuselage on a centerline hardpoint, or a AS.30 air-to-ground missile. Both of these were controlled by the pilot through a cockpit joystick. Alternatively, two Sidewinder infrared-homing air to air missiles were carried on underwing pylons.
95 Mirage III Cs were built. The served with the Armée de l’air from 1961 to 1988.
Dassault Mirage III C No. 92. (Dassault Aviation)
¹ FAI Record File Number 12391.
² FAI Record File Number 13036: 1,262.19 km/h (784.29 miles per hour)
The world record-setting North American Aviation P-51C Mustang, NX5528N, “Thunderbird.”
22 June 1955: A Bendix Trophy Race-winning ¹ and world record-setting ² North American Aviation P-51C Mustang, N5528N, which had previously owned by air racer Joe C. De Bona, actor and World War II bomber pilot, Jimmy Stewart, and world record-setter Jackie Cochran, was completely destroyed when it crashed approximately 15 miles (24 kilometers) north of Morrill, Nebraska, 22 June 1955.
N5528N, known both as Thunderbird and Mr. Alex, was being flown on a hail suppression operation by James M. Cook. After takeoff, one of the Mustang’s main landing gear failed to retract. When he was unable to resolve the problem, Cook flew the Mustang over unoccupied terrain north of Morrill, Nebraska, and bailed out.
The airplane crashed, exploded and the wreckage burned. N5528N was completely destroyed.
Cook survived with only slight injuries.
The Scottsbluff Star-Herald reported:
Hail Suppression Airplane Crashes North of Morrill
Pilot Cook Makes Successful Parachute Jump
By John Auran
(Star-Herald Staff Writer)
Hail suppressor Jim Cook Wednesday evening escaped death by a whisker when he was almost trapped in the plane he was trying to ditch. Cook took the plane down when one wheel locked in the up position and the other down. The plane crashed 15 miles north and three miles east of Morrill with Cook landing by parachute about a half mile south of the crash site. The daring hail suppressor fought a one hour and 40-minute battle in the air to get his landing gear straightened out, but failed in this despite radioed advice from several experts on the plane.
The fleet P-51 Mustang was smashed beyond recognition with only a few odds and ends remaining of what was once one of the fastest propeller driven planes in the world.
Cook escaped death in the following manner:
When he realized he could not safely crashland the plane he decided to take the plane north of Merrill to bail out.
First Trouble
His first trouble came when he tried to open the canopy which refused to function properly.
“I had to stand in the seat to push the canopy with my shoulders and it only partially opened, Finally by straining I pushed it off with my back.
“I sat down again to tell the airfield that I’d gotten the canopy off and caught one leg under me. As I rolled the plane I hung there and I couldn’t have been more that 700 feet off the ground when I finally got free. I started at about 3,000 feet.”
Cook said he trimmed the plane for the crash at about 3,000 feet and was unable to do anything further to prevent the plane from crashing.
“I tell you,” he said, “I was damn close when I left it.”
He said he saw the plane explode when he was still in the air. He estimated the plane hit the ground at a 30 degree angle.
Asked why he didn’t crashland the plane he said:
One Trotter Up
“I had one trotter (wheel) up and one down, about 100 gallons of gasoline in each wing and about 70 gallons behind me. In that situation it wasn’t worth risking my neck and those guys in the asbestos suits.
“I know those guys. They’ll go right in and there’s no point to that when the plane was going to be wrecked anyway.”
Cook said he left the field about 6:15. When he was airborne he became aware that the landing gears wouldn’t come up. He made several passes over the field to get ground men to determine the exact nature of his trouble.
When he first announced his intention to come down with the plane, fire engines from Scottsbluff rushed to the scene as spectators anxiously crowded the field to determine the outcome of the struggle.
Cook continued to make low passes over the field and from the ground until the nature of his trouble was learned.
When it was finally learned that he would bail out in the Morrill vicinity there was a rush to that vicinity by police, the Safety Patrol and interested parties.
A plane piloted by Earl Mean and Davey Guin, the latter an assistant of Cook’s, followed the plane to the crash site. However the two did not see the Texan bail out.
The crash was at 7:55 p.m.
As news of the crash spread through Morrill and vicinity hundreds of cars tried to find the plane and Cook.
At the crash scene little remained of the plane which once was the winner of the Bendix trophy and also held the record for propeller driven planes from Los Angeles to New York.
The ground was gouged out to a depth of up to six feet for a distance of at least 45 feet.
Because of darkness, there was no way to determine how far the wreckage was scattered but it was variously estimated at 50 to 100 yards.
Completely Demolished
Apparently the explosion completely demolished the plane. What was once the engine was unrecognizable as such.
Cook gave the description of the crash in his room at a Scottsbluff motel where he was taking a shower after the ordeal. The only injuries he suffered were deep scratches on his legs and a slight sprain.
Asked about the future of hail suppression in this area Cook shrugged his shoulders, saying “I’m not in a very good position to go much further.”
He said the fate of the program will be decided at a meeting of the board of directors of Valley Hail Suppression Inc. Friday.
The pilot said the plane was insured for $18,000, but pointed out that he had paid $28,000 for it and had spent another $7,000 in installing silver iodide burners for hail suppression purposes.
This was the third year of attempts at hail suppression by Cook in the North Platte valley. Only this year he had solved the tricky problem of high altitude burners and had hopes that the program might prove unquestionably worthwhile.
No Trouble
Cook said he took the plane up Tuesday when heavy thunderclouds hung over the valley and had no trouble with the plane. The first indication of trouble was when he was airborne Wednesday and he felt that his plane wasn’t gaining speed.
While he was a pilot in the Army Air Corps during World War II he had bailed out, but he did not want to go into details on the incident.
Asked about his immediate plans, he said, “I’m going to get dinner.”
—Scottsbluff Star-Herald, Vol. 54, No. 308, Thursday, 23 June 1955, Page 1, Columns 6–8 and Page 3, Column 1
The earliest document in Thunderbird‘s Civil Aviation Administration file, Form ACA 132, contains the hand-written notation, “no service no.” The document states, “THIS AIRCRAFT WAS ASSEMBLED FROM COMPONENTS OF OTHER AIRCRAFT OF THE SAME TYPE.” The aircraft is designated on the form as a North American P-51C, Serial No. 2925.
Thunderbird, made up of salvaged parts, has no known Army Air Corps serial number. No North American Aviation contract number is listed in any document. It has no known history prior to the C.A.A. assigning it the civil registration NX5528N. The serial number 2925 does not conform to any U.S. Army Air Corps serial number sequence for P-51 series aircraft, nor does it conform to any N.A.A. contract number sequence for P-51s. It appears that this serial number was assigned to the P-51 by the Civil Aeronautics Administration.
Various sources attribute U.S.A.A.C. serial numbers to NX5528N, e.g., 43-6822 ³ and 43-6859. ⁴ There is nothing in the airplane’s C.A.A. records to substantiate these claims. The record specifically states that there is “no service no.” Some sources also describe Thunderbird as a P-51B or an F-6C photo reconnaissance variant. C.A.A. records specifically identify the airplane as a P-51C.
Thunderbird‘s fuselage was purchased as “salvage & scrap” from the 803rd A.A.F. Specialized Depot, Park Ridge, Illinois, by Allied Aircraft Co., Chicago, Illinois. The transaction is dated 14 January 194_ (the year was left blank on the contract). The purchase price was $27.05. Allied Aircraft Co. was a partnership of Leland H. Cameron and Martha L. Cameron, 5300 W. 63rd Street, Chicago, Illinois.
On 11 February 1948, Cameron purchased a P-51, Serial No. 2925, registration N5528N, from J. Quaine, for $1.00. On 5 April 1948, the Civil Aeronautics Authority (predecessor to the Federal Aviation Administration) registered N5528N to L.H. Cameron, 4619 Sancola Avenue, North Hollywood, California.
Two days later, 7 April 1948, Leland Cameron sold N5528N to Joe De Bona Racing Co., 133 N. Robertson Boulevard, Beverly Hills, California. The purchase price listed on the Department of Commerce Bill of Sale was $10.00. On that date, Joe De Bona applied to have the airplane registered in the name of his racing company.
Interestingly, on De Bona’s Department of Commerce Application for Registration, the serial number of N5528N is listed as “21925.” Information on the application is typewritten with the exception of this serial number, which was handwritten. As above, 21925 does not conform to any Army Air Corps or North American Aviation serial number for P-51B or P-51C Mustangs. This is the only instance in which 21925 appears in the airplane’s C.A.A. records.
On 31 August 1948, following an airworthiness inspection, C.A.A. Inspector Homer L. Stamets issued an original Airworthiness Certificate to NX5528N. The “Experimental” classification was used as there was no civil Type Certificate for North American’s P-51 fighters, and the C.A.A. had not tested or accepted the aircraft for any civilian use. The Experimental classification placed severe restrictions on De Bona’s use of Thunderbird. In the Operations Authorized section of the certificate it states, “Certificated for the purpose of Racing and Exhibition flights only; flights limited to the Continental limits of the UNITED STATES. Flights prohibited over thickly populated areas or large gatherings of people.” The certificate was valid for one year.
Noted on the Airworthiness Inspection form is that NX5528N was equipped with a Packard V-1650-3 engine. This license-built version of the Rolls-Royce Merlin 63 engine was standard equipment for early production P-51B and P-51C Mustangs. It was rated at 1,380 horsepower at 3,000 r.p.m. and 60 inches of manifold pressure.
The start of the 1948 Bendix Trophy Race took place on 4 September at Van Nuys, California. Joe De Bona was entered with Thunderbird, but was unable to complete the race. Reportedly low on fuel, he landed at Norwalk, Ohio.
Joe De Bona polishes North American P-51C Mustang N5528N, “Thunderbird,” with Paul Mantz approaching, April 1949. Mantz’s P-51C NX1204, “Latin American,” is in the background. (Allan Grant/LIFE Magazine)
For 1949 Thunderbird‘s engine was upgraded to a Packard V-1650-7. C.A.A. Inspector Stamets again approved its airworthiness inspection and issued another one-year Experimental certificate with the same restrictions as previously ordered.
The start of the 1949 Bendix Trophy Race was relocated from Metropolitan Airport at Van Nuys to Rosamond Dry Lake, 40 miles (64.4 kilometers) north of Muroc Air Force Base (renamed Edwards AFB just two months later). This year Joe De Bona was successful. He won the 2,008 mile (3,231.6 kilometers) race to Cleveland, Ohio in an elapsed time of 4:16:17.5, averaging 470.136 miles per hour (756.611 kilometers per hour.) Paul Mantz did not fly in the race but entered two P-51Cs, flown by Stanley H. Reaver and Herman “Fish” Salmon, who placed 2nd and 3rd.
(Leland Cameron, who had sold N5528N to Joe De Bona Racing, also competed in the 1949 Bendix air race. He flew a Martin B-26C-20-MO Marauder medium bomber, serial number 41-35071, N5546N, but he did not finish within the prescribed time limit.)
Joe De Bona and Jimmy Stewart with Thunderbird, their P-51C Mustang racer, April 1949. Placed on the ramp in front of the airplane is equipment that has been removed or replaced. Note the four “cuffed” Hamilton Standard propeller blades along the right side of the photograph. They have been replaced with un-cuffed and polished Hamilton Standard blades. (Allan Grant/LIFE Magazine)
On 19 December 1949, James Stewart (Sole Owner, for Joe De Bona Racing Co.) sold N5528N to Jacqueline Cochran of Indio, California, for “$1.00 and other consideration.” The C.A.A. issued a new Certificate of Registration to Jackie on 29 December 1949.
That same day, Jackie Cochran flew her new airplane to two Fédération Aéronautique Internationale (FAI) World Records for Speed Over a 500 kilometer Closed Circuit Without Payload, and a U.S. National Aeronautic Association record, with an average speed of 703.275 kilometers per hour (436.995 miles per hour). (FAI Record File Numbers 4476, 12323)
Thunderbird underwent another airworthiness inspection, completed 10 November 1950 by Patrick J. Kavanaugh, A&E 402226. C.A.A. Inspector H.W. Kattleman issued a new Experimental airworthiness certificate, valid from 10 November 1950 to 10 November 1951. The limitations were identical to the restrictions described above.
Jackie set another Fédération Aéronautique Internationale record on 9 April 1951, flying NX5528N to an average speed of 747.338 kilometers per hour (464.374 miles per hour) over a straight 16 kilometer (9.942 miles) course at Indio, California. (FAI Record File Number 4477)
Jackie Cochran’s North American Aviation P-51C Mustang, N5528N, circa 1951. (FAI)
The next airworthiness inspection of N5528N was completed 26 March 1952 by mechanic James N. Smith. Once again, C.A.A. Inspector H.W. Kattleman issued an Experimental airworthiness certificate, valid from 31 March 1952 to 31 March 1953.
Jackie Cochran had owned Thunderbird for just over three years when, on 20 January 1953, she sold it back to Jimmy Stewart for “$1.00 and other consideration.” The C.A.A. registered N5528N to Stewart at 141 El Camino Drive, Beverly Hills, California, 9 April 1953.
Thunderbird received another engine upgrade, this time to a Packard V-1650-9, serial number V381230. (This engine was rated at 1,380 horsepower at 3,000 r.p.m., but could produce a maximum 2,280 horsepower with water-alcohol injection.) The next airworthiness inspection was completed 31 March 1953 by a mechanic with certificate number M-17807. At the time of this inspection, N5528N had accumulated 76:00 hours total flight time (TTAF). The V-1650-9 engine had only 14:10 hours since new. C.A.A. Aviation Safety Agent Ralph C. Olsen approved the next airworthiness certificate.
Jimmy Stewart’s P-51C N5528N, in the “Mr. Alex” paint scheme, 1953. (Unattributed)
At about this time, N5528N was repainted and renamed Mr. Alex in honor of Jimmy Stewart’s father, Alexander Maitland Stewart.
A major event of 1953 was the Coronation of Elizabeth II on 2 June. American television networks CBS and NBC had arranged to have films of the ceremonies flown across the Atlantic to Newfoundland. From there the film would be flown on to the United States by Jimmy Stewart’s P-51 and another owned by Paul Mantz, NX1204, flown by Stanley Reaver.
Jimmy Stewart asked the C.A.A. to temporarily remove the limitations on NX5528N’s airworthiness certificate so that it could be flown out of the United States to pick up the films at Newfoundland and return with them to Boston, Massachusetts. C.A.A. Aviation Safety Agent Ralph C. Olsen approved this request. A second flight to Montreal, Canada, was also authorized. The restrictions would resume when the Experimental category Mustang returned to the United States after the Montreal trip.
Joe De Bona was once again in the cockpit of N5528N. He arrived at Boston 24 minutes before his rival, Stan Reaver, but a third network, ABC, was actually the first to broadcast the films of the Coronation.
On 30 March 1954, another airworthiness inspection was completed by the same mechanic as the 1953 periodic inspection. Once again, the airworthiness certificate was approved by Ralph Olsen. Total flight time for N5528N was now 118:00 hours, with 42:50 on the Merlin engine.
On 1 September 1954, Jimmy Stewart sold N5528N to Joe De Bona for $1.00 plus a $7,500.00 Chattel Mortgage. On 14 March 1954, the C.A.A. registered the airplane, which they now designated as a North American F-51C, to De Bona at 339 North Beverly Drive, Beverly Hills, California.
An airworthiness inspection was completed 17 March 1955. The mechanic performing the inspection held certificate number M7427. The V-1650-9 had been removed and replaced with a Packard V-1650-300, serial number V350012. This post-war commercial engine was rated at 1,660 horsepower at 3,000 r.p.m. The airframe now had 150:00 hours TTAF, and the new engine had 30:00 hours.
The following day, 18 March 1955, Joe De Bona sold N5528N to James M. Cook of Jacksboro, Texas, for $18,000 plus a $7,000 Chattel Mortgage at 4% interest, payable on or before 1 January 1956. The C.A.A. issued a Certificate of Registration to Cook on 31 March 1955.
On 22 June 1955, North American Aviation P-51C Mustang NX5528N crashed near Scott’s Bluff, Nebraska, while being flown by James Cook. Although an official cause is not available, anecdotally, one of the P-51’s main landing gear failed to retract and Cook bailed out. Although an accident report was completed 13 July 1955, the Federal Aviation Administration currently has no report in its files, nor does the National Transportation Safety Board. The Mustang was deregistered 15 August 1955. (James Cook soon bought another Mustang, P-51D N71L, which he flew for several years as part of the U.S. Weather Bureau’s Thunderstorm Research Airplane Project.)
Warren A. Piestch of Pietsch Aircraft Restoration and Repair, Inc., Minot, North Dakota, purchased a tail wheel assembly and other parts from a wrecked P-51 located in Nebraska, 23 June 1999. He wrote to the F.A.A. and stated that these parts were from P-51 serial number 2925, and that he wanted to rebuild the aircraft. Pietsch requested that ownership of 2925 be assigned to him and that a registration N-number that he had previously reserved, N151LP, be assigned to the airplane. The F.A.A. did as Pietsch requested. That registration was valid until 30 April 2015. On 24 September 2007, 2925 was registered to Pietsch with its original “N number” of N5528N. That registration remains in effect. There is no current Airworthiness Certificate.
AirCorps Aviation of Bemidji, Minnesota, has “restored” a P-51 for the Dakota Territory Air Museum, which they identify as the record-breaking Mustang, Thunderbird. (Warren Pietsch is a member of the museum’s board of directors.)
1949 ace winner Joe De Bona with the Bendix Trophy. De Bona flew Thunderbird in the 1948 and 1949 air races.
¹ Flown by Joe C. De Bona, NX5528N won the 1949 Bendix Trophy Race, 3 September 1949, with an average speed of 470.136 miles per hour (756.611 kilometers per hour), on 3 September 1949.
² Jacqueline (“Jackie”) Cochran flew NX5528N to set two Fédération Aéronautique Internationale world speed records and a U.S. National record on 19 December 1949. She averaged 703.275 kilometers per hour (436.995 miles per hour) over a 500 kilometer closed circuit. (FAI Record File Numbers 4476, and 2323) On 9 April 1951, she set a third FAI record with Thunderbird, with an average speed of 747.338 kilometers per hour (464.374 miles per hour) over a straight 16-mile course. (FAI Record File Number 4477)
³ 43-6822 was a P-51B-5 which crash landed at Staplethurst, Kent, England, 28 April 1944.
⁴ 43-6859 was also a P-51B-5. It crashed at Megara, Greece, 15 September 1944. Its pilot was killed.
Jackie Cochran with her North American Aviation P-51C Mustang, N5528N. (FAI)
21 June 1972: Aérospatiale Chief Test Pilot Jean Boulet set a Fédération Aéronautique Internationale (FAI) Absolute World Record for helicopters by flying the first Aérospatiale SA 315 Lama, serial number 315-001, to an altitude of 12,442 meters (40,820 feet) from Aérodrome d’Istres, northwest of Marseille, France.¹ He also set two class and sub-class world records.² These records remain current.
The SA 315B Lama was designed to perform at the very high altitudes and temperatures necessary for service with the Indian Army. It combined an SE.3130 Alouette II airframe with a much more powerful Turboméca Astazou IIIB turboshaft engine—derated to 550 shaft horsepower—and the rotor system, transmission and gearboxes from the larger 7-place Alouette III.
Jean Boulet in the cockpit of his SA 315 Lama, just prior to his record flight. (Airbus)
The record-setting helicopter was modified by removing all equipment that was not needed for the record flight attempt. Various instruments and the co-pilot and passengers seats were taken out of the cockpit, as well as the helicopter’s synchronized horizontal stabilizer and tail rotor guard. The standard fuel tank was replaced with a very small tank holding just 70 kilograms (approximately 22.7 gallons) of jet fuel. Turboméca modified the engine to increase the output shaft r.p.m. by 6%. After Jean Boulet started the turbine engine, mechanics removed the battery and starter motor to decrease the weight even further.
Final preparations for the altitude record attempt. Jean Boulet sits in the cockpit, wearing an oxygen mask. (Helico-Fascination)
In just 12 minutes, the Lama had climbed to 11,000 meters (36,089 feet). As he approached the peak altitude, the forward indicated airspeed had to be reduced to 30 knots (34.5 miles per hour, 55.6 kilometers per hour) to prevent the advancing main rotor blade tip from reaching its Critical Mach Number in the thin air, which would have resulted in the blade stalling. At the same time, the helicopter was approaching Retreating Blade Stall.
When the helicopter could climb no higher, Boulet reduced power and decreased collective pitch. The Turboméca engine, not calibrated for the very high altitude and cold temperature, -62 °C. (-80 °F.), flamed out. With no battery and starter, a re-start was impossible. Boulet put the Lama into autorotation for his nearly eight mile descent. Entering multiple cloud layers, the Plexiglas bubble iced over. Because of the ice and clouds, the test pilot had no outside visibility. Attitude instruments had been removed to lighten the helicopter. Boulet looked up through the canopy at the light spot in the clouds created by the sun, and used that for his only visual reference until he broke out of the clouds.
Still in autorotation, the SA 315 missed touching down exactly on its takeoff point, but was close enough that FAI requirements were met.
Aérospatiale SA 315 Lama, FAI World Record Holder, 12,442 meters, in autorotation, just before touching down at at Istres, 21 June 1972. (Helico-Fascination)
Two days earlier, 19 June 1972, Boulet and fellow test pilot Gérard Boutin had set another FAI World Record for Altitude Without Payload, when they flew the Lama to 10,856 meters (35,617 feet).³ This record also still stands.
Jean Boulet and Gérard Boutin in the cockpit of SA 315B s/n 315-001. (Airbus)
The SA 315B Lama is a 5-place light turboshaft-powered helicopter which is operated by a single pilot. The helicopter was built to meet the specific needs of the Indian Air Force for operations in the Himalayan Mountains. It was required to take off an land at an altitude of 6,000 meters (19,685 feet) while carrying a pilot, one passenger and 200 kilograms (441 pounds) of cargo.
The fuselage is 10.26 meters (33 feet, 7.9 inches) long. With all rotors turning, the helicopter has an overall length of 12.92 meters (42 feet, 4.7 inches) and height of 3.09 meters (10 feet, 1.7 inches). The SA 315B has an empty weight of 1,021 kilograms (2,251 pounds) and a maximum gross weight of 1,950 kilograms (4,299 pounds). With an external load carried on its cargo hook, the maximum gross weight is 5,070 pounds (2,300 kilograms).
The three-bladed, fully-articulated main rotor has a diameter of 11.02 meters (36 feet, 1.9 inches). It turns clockwise, as seen from above. (The advancing blade is on the left side of the helicopter.) Normal main rotor speed, NR, is 350–360 r.p.m. The three-bladed anti-torque tail rotor is 1.91 meters (6 feet, 3.2 inches) in diameter and turns clockwise, as seen from the helicopter’s left side. (The advancing blade is below the axis of rotation.) It turns at 2,020 r.p.m.
The Lama was initially powered by a Turboméca Artouste IIIB (later aircraft, Artouste IIIB1) turbo-moteur. This is a turboshaft engine with a two-stage compressor section (1 axial-flow, 1 centrifugal-flow stages), and a three-stage axial-flow turbine. The engine turns 33,500 r.p.m. and the output drive shaft turns 5,773 r.p.m. The Artouste IIIB1 produces a maximum 870 horsepower, but is derated to 570 horsepower for installation in the Lama. The engine is 1.815 meters (5 feet, 11.5 inches) long, 0.667 meters (2 feet, 2.3 inches) high and 0.520 meters (1 foot, 8.5 inches) wide. It weighs 178 kilograms (392 pounds).
The helicopter has a cruise speed 103 knots (191 kilometers per hour, 119 miles per hour) and a maximum speed of 113 knots (209 kilometers per hour, 130 miles per hour) at Sea Level. The service ceiling is 5,400 meters (17,717 feet). At 1,950 kilograms (4,299 pounds), the Lama has a hover ceiling in ground effect (HIGE) of 5,050 meters (16,568 feet), and out of ground effect (HOGE), 4,600 meters (15,092 feet).
Société nationale des constructions aéronautiques du Sud-Est became Aérospatiale in 1970. The company produced the SA 315B Lama beginning in 1971. It was also built under license by Hundustan Aeronautics in India and Helibras in Brazil.
The total number of SA 315Bs and its variants built is uncertain. In 2010, Eurocopter, the successor to Aérospatiale, announced that it will withdraw the Lama’s Type Certificate in 2020.
The world-record-setting Aérospatiale SA 315B Lama, F-BPXS, serial number 315-001, lifting an external load on its cargo hook, 18 May 1980. (Kenneth Swartz)
After setting the world altitude record, 315-001 was returned to the standard configuration and assigned registration F-BPXS. It crashed at Flaine, a ski resort in the French Alps, 23 February 1985.
Jean Boulet with a SNCASE SE.3130 Alouette II.Médaille de l’Aéronautique
Jean Ernest Boulet was born 16 November 1920, in Brunoy, southeast of Paris, France. He was the son of Charles-Aimé Boulet, an electrical engineer, and Marie-Renée Berruel Boulet.
He graduated from Ecole Polytechnique in 1940 and the Ecole Nationale Supérieure de l’aéronautique In 1942. (One of his classmates was André Edouard Turcat, who would also become one of France’s greatest test pilots.)
Following his graduation, Boulet joined the Armée de l’Air (French Air Force)and was commissioned a sous-lieutenant. He took his first flight lesson in October. After the surrender of France to the Nazi invaders, Boulet’s military career slowed. He applied to l’Ecole Nationale Supérieure de l’Aéronautique in Toulouse for post-graduate aeronautical engineering. He completed a master’s degree in 1943.
During this time, Boulet joined two brothers with LaResistance savoyarde, fighting against the German invaders as well as French collaborators.
In 1943, Jean Boulet married Mlle. Josette Rouquet. They had two sons, Jean-Pierre and Olivier.
In February 1945, Sous-lieutenant Boulet was sent to the United States for training as a pilot. After basic and advanced flight training, Bouelt began training as a fighter pilot, completing the course in a Republic P-47D Thunderbolt. He was then sent back to France along with the other successful students.
On 1 February 1947 Jean Boulet joined Société nationale des constructions aéronautiques du Sud-Est (SNCASE) as an engineer and test pilot. He returned to the United States to transition to helicopters. Initially, Boulet and another SNCASE pilot were sent to Helicopter Air Transport at Camden Central Airport, Camden, New Jersey, for transition training in the Sikorsky S-51. An over-enthusiastic instructor attempted to demonstrate the Sikorsky to Boulet, but lost control and crashed. Fortunately, neither pilot was injured. Boulet decided to go to Bell Aircraft at Niagara Falls, New York, where he trained on the Bell Model 47. He was awarded a helicopter pilot certificate by the U.S. Federal Aviation Administration, 23 February 1948.
Test pilot Jean Boulet (center), with Mme. Boulet and the world-record-setting SE.3130 Alouette II, 1955. (HELIMAT)Officier de l’Legion de Honneur
As a test pilot Boulet made the first flight in every helicopter produced by SNCASE, which would become Sud-Aviation and later, Aérospatiale (then, Eurocopter, and now, Airbus Helicopters).
While flying a SE 530 Mistral fighter, 23 January 1953, Boulet entered an unrecoverable spin and became the first French pilot to escape from an aircraft by ejection seat during an actual emergency. He was awarded the Médaille de l’Aéronautique.
Jean Boulet was appointed Chevalier de la légion d’honneur in 1956, and in 1973, promoted to Officier de la Légion d’honneur.
Jean Boulet had more than 9,000 flight hours, with over 8,000 hours in helicopters. He set 24 Fédération Aéronautique Internationale world records for speed, distance and altitude. Four of these are current.
Jean Boulet wrote L’Histoire de l’Helicoptere: Racontée par ses Pionniers 1907–1956, published in 1982 by Éditions France-Empire, 13, Rue Le Sueuer, 75116 Paris.
Jean Ernest Boulet died at Aix-en-Provence, in southern France, 15 February 2011, at the age of 90 years.
¹ FAI Record File Number 11657: Class: E (Rotorcraft): Sub-Class: E-Absolute (Absolute Record of class E)
² FAI Record File Number 753: Altitude Without Payload: Sub-Class: E-1b (Helicopters: take off weight 500 to 1000 kg). FAI Record File Number 754: Altitude Without Payload: Sub-Class: E-1 (Helicopters).
³ FAI Record File Number 788: Altitude Without Payload: Sub-Class E-1c.
