Tag Archives: Strategic Air Command

12 February 1959

Convair B-36J-10-CF Peacemaker, 52-2827, the last B-36 built. (U.S. Air Force)
Convair B-36J-75-CF Peacemaker, 52-2827, the last B-36 built. (U.S. Air Force)

The Last Peacemaker: This gigantic airplane, a Convair B-36J-75-CF Peacemaker, serial number 52-2827, was the very last of the ten-engine strategic bombers built by the Convair Division of General Dynamics at Fort Worth, Texas. It was completed 1 July 1954. On 14 August, it was delivered to the Strategic Air Command, 92nd Bombardment Wing, Heavy, at Fairchild Air Force Base, Washington. In April 1957, 52-2827 was assigned to the 95th Bombardment Wing, Heavy, at Biggs Air Force Base, El Paso, Texas.

The last one built, 52-2827 was also the last operational B-36.

Convair B-36J-10-CF Peacemaker 52-2827 at Amon Carter Field, Fort Worth, Texas, 12 February 1959. (Unattributed)
Convair B-36J-75-CF Peacemaker 52-2827, City of Fort Worth, at Amon Carter Field, Fort Worth, Texas, 12 February 1959. (Unattributed)

On 12 February 1959, after 4 years, 5 months, 30 days service, the Air Force returned the bomber to Fort Worth. 52-2827 departed Biggs Air Force Base at 11:00 a.m., under the command of Major Frederick J. Winter. Other pilots were Colonel Gerald M. Robinson, commanding the 95th Wing, and Captain Wilson P. Smith. (Colonel Robinson flew as first pilot during the takeoff, while Major Winter flew the landing.) The bomber’s crew were hand-picked, and included two navigators, two flight engineers, an observer, two radio operators, two gunners and a crew chief. Ten newspaper, radio and television reporters were on board as well.

Crew of City of Fort Worth

The B-36 touched down at Amon Carter Field at 2:55 p.m. The Peacemaker’s log book was closed out with a total of 1,414 hours, 50 minutes, flight time.

After a ceremony attended by thousands, the bomber was officially retired. A bugler blew “Taps,” and then the Peacemaker was towed away.

It was put on display at Amon Carter Field. After decades of neglect, the bomber was placed in the care of the Pima Air and Space Museum at Tucson for restoration and display.

The last Peacemaker, Convair B-36J-10-CF 52-2827, comes to the end of the assembly line at Fort Worth, Texas. (University of North Texas Libraries)
The last Peacemaker, Convair B-36J-75-CF 52-2827, comes to the end of the assembly line at Fort Worth, Texas. (University of North Texas Libraries)

Convair B-36J 52-2827 is one of 14 “Featherweight III” high altitude variants. It was built without the six retractable defensive gun turrets of the standard B-36, retaining only the two M24A1 20 mm autocannons in the tail. This reduced the crew requirement to 13. It is 162 feet, 1 inch (49.403 meters) long with a wingspan of 230 feet (70.104 meters) and overall height of 46 feet, 9 inches (14.249 meters). The empty weight is 166,125 pounds (75,353 kilograms) and loaded weight is 262,500 pounds (119,068 kilograms). Maximum takeoff weight is 410,000 pounds (185,973 kilograms).

The B-36J has ten engines. There are six air-cooled, supercharged 4,362.49 cubic-inch-displacement (71.488 liter) Pratt & Whitney Wasp Major C6 (R-4360-53) four-row, 28-cylinder radial engines placed inside the wings in a pusher configuration. These had a compression ratio of 6.7:1 and required 115/145 aviation gasoline. The R-4360-53 had a Normal Power rating of 2,800 horsepower at 2,600 r.p.m. Its Military Power rating was 3,500 horsepower at 2,800 r.p.m., and 3,800 horsepower at 2,800 r.p.m. with water injection—the same for Takeoff. The engines turned three-bladed Curtiss Electric constant-speed, reversible propellers with a diameter of 19 feet, 0 inches (5.791 meters) through a 0.375:1 gear reduction. The R-4360-53 is 9 feet, 9.00 inches (2.972 meters) long, 4 feet, 7.00 inches (1.397 meters) in diameter, and weighs 4,040 pounds (1,832.5 kilograms).

Four General Electric J47-GE-19 turbojet engines are suspended under the wings in two-engine pods. The J47 is a  single-shaft axial-flow turbojet engine with a 12-stage compressor section, 8 combustion chambers, and single-stage turbine. The J47-GE-19 was modified to run on gasoline and was rated at 5,200 pounds of thrust (23.131 kilonewtons).

The B-36J Featherweight III had a cruise speed of 230 miles per hour (370 kilometers per hour) and a maximum speed of 418 miles per hour (673 kilometers per hour). The service ceiling was 43,600 feet (13,289 meters) and its combat radius was 3,985 miles (6,413 kilometers). The maximum range was 10,000 miles (16,093 kilometers).

The B-36 was designed during World War II and nuclear weapons were unknown to the Consolidated-Vultee Aircraft Corporation engineers. The bomber was built to carry up to 86,000 pounds (39,009 kilograms) of conventional bombs in the four-section bomb bay. It could carry the 43,600 pound (19,777 kilogram) T-12 Cloudmaker, a conventional explosive earth-penetrating bomb. When armed with nuclear weapons, the B-36 could carry several Mk.15 3.8 megaton thermonuclear bombs. By combining the bomb bays, one Mk.17 15-megaton thermonuclear bomb could be carried.

Bomb, Mark 17, displayed with Convair B-36J Peacemaker at the National Museum of the United States Air Force. (U.S. Air Force)
Bomb, Mark 17 Mod 2, displayed with Convair B-36J Peacemaker at the National Museum of the United States Air Force. (U.S. Air Force)

Between 1946 and 1954, 384 B-36 Peacemakers were built. They were never used in combat. Only four still exist.

Convair B-36J-10-CF 52-2827 at the Pima Air and Space Museum, Tucson, Arizona. (B-36 Peacemaker Museum)
Convair B-36J-75-CF 52-2827 at the Pima Air & Space Museum, Tucson, Arizona. (B-36 Peacemaker Museum)

TDiA has received an number of comments recently regarding the safety of the Convair B-36 Peacemaker strategic bomber. Based on our research, out of the 384 built, 27 B-36s were lost in accidents between 1950 and 1957, amounting to just 7% of the fleet. 165 crew members were killed. The most common cause seems to be a fire following a landing gear collapse. The first, a B-36B, was lost on 14 February 1950. That incident is described at https://www.thisdayinaviation.com/13-february-1950/ . On 27 April 1951, a flight of four North Americaan Aviation F-51D Mustangs attacked a B-36D over Oklahoma. One fighter collided with the bomber, which crashed, resulting in the death of 12 of the 17 airmen on board. (The F-51D pilot was also killed.) 6 May 1951, a B-36D crashed while attempting to land in high winds at Kirtland AFB, New Mexico. 23 of 25 on board were killed. 22 August 1951, a taxiing RB-36E collided with a parked RB-36E, which was destroyed. No injuries. 29 January 1952, a B-36D landed short of the runway and skidded into a snow bank at Fairchild AFB, Washington. The aircraft was destroyed by fire, but there were no fatalities. 6 March 1952, a B-36F was destroyed by fire while parked. A fuel leak was caused when the left landing gear failed on landing. There were no fatalities. 15 April 1952, a B-36D overran the runway during a maximum weight takeoff at Fairchild AFB, WA, because flight control trim had been incorrectly set. The aircraft was destroyed by fire. 15 of 17 on board were killed. 28 May 1952, a B-36F returning to Carswell AFB after takeoff due to a loose cowling, crashed and caught fire when its landing gear collapsed on landing, 7 on board were killed. 4 August 1952. A B-36F was destroyed by fire while parked at Carswell AFB. While being fueled, gasoline overflowed from a fuel vent and was ignited by a ground power unit. No injuries or deaths. 13 February 1953, a B-36H was misdirected during a GCA approach to Goose Bay, Labrador. It crash landed on a hill. 2 of 17 on board were killed. 5 August 1952, a modified B-36D being flown by a Convair crew crashed in the ocean west of San Diego, California, when it’s number 5 engine caught fire, which then spread to the rest of the wing. 7 of 8 crewmen bailed out while the pilot remained at the controls to guide the bomber away from the populated area. He was killed. 1 crewman drowned. 4 crewmen received minor injuries. 18 February 1953, an RB-36H was destroyed by fire when it’s landing gear collapsed during landing at Walker AFB, New Mexico. Of the 22 on board there were no fatalities. 18 March 1953, an RB-36H was destroyed when it hit a hill in Labrador. The aircraft was off course and one-and-a-half hours ahead of schedule. All 23 on board were killed. 5 August 1953, an RB-36H went down in the Atlantic Ocean (cause not discovered at this time.) 19 of 23 on board were killed. 11 December 1953, a B-36D crashed into a mountain in poor visibility while on approach to Biggs AFB, Texas. (Not in GCA radar contact). 9 of 9 on board were killed. 26 February 1954, at Fairchild AFB, the landing gear of a taxiing B-36D collapsed, resulting in the aircraft being destroyed by fire. No fatalities among the 20 on board. 29 March 1954, a B-36D crashed while practicing a takeoff abort at Fairchild AFB. All 7 on board were killed. 27 August 1954, an RB-36H making its sixth practice night approach at Ellsworth AFB hit an obstruction on a hill with its left wing and crashed. (Obstruction lights were inoperative due to a lightning strike.) 26 of 27 on board were killed. [Altimeter was in error, GCA was out of calibration, resulting in the aircraft being 150 feet lower on the glide slope than it should have been.] 8 February 1955, a B-36D landed short of the runway during a practice landing at Carswell AFB, Texas. Landing gear was sheared off and the aircraft damaged beyond economical repair. No fatalities. 6 March 1955, a B-36D landing at Loring AFB, Maine, hit a wingtip on a snowbank, resulting in the aircraft being destroyed by fire. No fatalities but some (unknown how many) serious injuries among the 11 on board. 25 May 1955, a B-36J disintegrated in flight during a thunderstorm/tornado near Sterling City, Texas. All 15 on board were killed. (Lost outboard wing panels and all tail surfaces. Impacted in level attitude with little forward motion.) 4 January 1956, an RB-36H crashed on landing at Ellsworth AFB, South Dakota after uneven power reduction. Destroyed by fire. No fatalities. 19 January 1956, a B-36D made a hard landing at Biggs AFB, Texas. No fatalities. Aircraft damaged beyond economical repair. 15 November 1956, a B-36H lost power on takeoff from Lowry AFB, Colorado, due to fuel starvation. It crashed one mile short of the runway attempting an emergency landing at Stapleton Airport, Denver. Aircraft destroyed by fire. No fatalities among 21 on board. 6 June 1957, a B-36H was damaged beyond economical repair while flying through a thunderstorm near Carswell AFB, Texas. No fatalities. 9 November 1957, an RB-36H was destroyed by fire while parked at Ramey AFB, Puerto Rico. No fatalities… A major incident occurred 1 September 1952, when a tornado struck Carswell AFB. 61 B-36s on the ground were damaged. Most were repaired and returned to service within two weeks.

© 2019, Bryan R. Swopes

21 January 1987

Rockwell B-1B Lancer 85-0073, Wings of Freedom, lands at Ellsworth AFB, South Dakota, 21 January 1987. (U.S. Air Force)
General John T. Chain, Jr., U.S. Air Force
General John T. Chain, Jr., U.S. Air Force

21 January 1987: The first Rockwell International B-1B Lancer was delivered to the 28th Bomb Wing at Ellsworth Air Force Base, South Dakota. The airplane, serial number 85-0073, was named Wings of Freedom. It was flown to Ellsworth by General John T. Chain, Jr., Commander in Chief, Strategic Air Command.

100 B-1B Lancers were built by Rockwell International’s aircraft division at Air Force Plant 42, Palmdale, California, between 1983 and 1988

The Rockwell International B-1B Lancer is a supersonic intercontinental bomber capable of performing strategic or tactical missions. It is operated by a flight crew of four.

The B-1B is 147 feet, 2.61 inches (44.8719 meters) long, with the wing span varying from 86 feet, 8.00 inches (26.4160 meters) at 67.5° sweep to 136 feet, 8.17 inches (41.6603 meters) at when fully extended to 15° sweep. It is 33 feet, 7.26 inches (10.2428 meters) high to the top of the vertical fin. The bomber’s empty weight is approximately 180,500 pounds (81,873 kilograms). Its maximum weight in flight is 477,000 pounds (216,634 kilograms). The internal payload is up to 75,000 pounds (34,019 kilograms).

The bomber is powered by four General Electric F101-GE-102 turbofan engines, mounted in two-engine nacelles under the wing roots. These are rated at 17,390 pounds of thrust (17.355 kilonewtons) and produce 30,780 pounds (136.916 kilonewtons) with “augmentation.” The engine has two fan stages, a 9-stage axial-flow compressor and a 3-stage turbine. The F101-GE-102 is 15 feet, 0.7 inches (4.590 meters) long, 4 feet, 7.2 inches (1.402 meters) in diameter and weighs 4,460 pounds (2,023 kilograms).

“The Bone” has a maximum speed of Mach 1.2 at Sea Level (913 miles per hour, or 1,470 kilometers per hour). The service ceiling is “over 30,000 feet” (9,144 meters). The Lancer’s maximum range is “intercontinental, unrefueled.”

A Rockwell B-1B drops Mk. 82 bombs from its three weapons bays. (U.S. Air Force)

It can carry up to 84 Mk.82 500-pound (226.8 kilogram) bombs, 24 Mk.84 2,000-pound (907.2 kilogram) bombs or other weapons in three weapons bays. The B-1B was built with the capability to carry 24 B61 thermonuclear bombs, though, since 2007, the fleet no longer has this capability.

100 B-1B Lancers were built between 1983 and 1988. As of May 2018, 62 B-1B bombers are in the active Air Force inventory. The Air Force plans upgrades to the aircraft and plans to keep it in service until 2036.

After 21 years of service, 85-0073 was retired to The Boneyard at Davis-Monthan Air Force Base, Tucson, Arizona, 24 March 2008.

Rockwell B-1B Lancer, 85-0073, Wings of Freedom, at Ellsworth AFB, South Dakota, 21 January 1987. (U.S. Air Force)
Rockwell B-1B Lancer, 85-0073, Wings of Freedom, at Ellsworth AFB, South Dakota, 21 January 1987. (U.S. Air Force)

UPDATE: 38 years later, 23 January 2025, the final 28th Bomb Wing Rockwell B-1B Lancer departed Ellsworth AFB to relocate to Grand Forks AFB, North Dakota. The runways at Ellsworth are to be modified to accept the new Northrop Grumman B-21 Raider.

The final Rockwell B-1B Lancer of the 28th Bombardment Wing departs Ellsworth AFB, 23 January 2025. (Senior Airman Dylan Maher/U.S. Air Force 250122-F-JD534-1480)

© 2025, Bryan R. Swopes

16–18 January 1957

The three Boeing B-52B Stratofortresses at March AFB, 18 January 1957. (U.S. Air Force)
The three Boeing B-52B Stratofortresses at March AFB, 18 January 1957. (U.S. Air Force)

16 January 1957: Operation POWER FLITE. At 1:00 p.m. PST, five Boeing B-52B Stratofortress eight-engine jet bombers of the United States Air Force Strategic Air Command, 93rd Bombardment Wing (Heavy), departed Castle Air Force Base, near Merced, California, on a non-stop around-the-world flight. 45 hours, 19 minutes later, three B-52s landed at March Air Force Base, Riverside, California, completing the 24,325 miles (39,147 kilometer) flight at an average speed of 534 miles per hour (859 kilometers per hour).

The lead Stratofortress, B-52B-35-BO 53-0394, Lucky Lady III, was commanded by Lieutenant Colonel James H. Morris. Morris had been co-pilot aboard Lucky Lady II, a Boeing B-50A Superfortress that flew around the world in 1949. Also aboard Morris’ bomber was Major General Archie J. Old, Jr., commanding 15th Air Force.

Major General Archie J. Old, Jr., U.S. Air Force, in the cockpit of B-52B 53-0394. (LIFE Magazine via Jet Pilot Overseas)

Three of the  bombers were considered primary, with two “spares.” Each B-52 carried a flight crew of nine men, including three pilots and two navigators.

A Boeing B-52 Stratofortress refuels in flight from a Boeing KC-97 Stratotanker. The KC-97 had to enter a shallow dive to increase its speed, while teh B-52 flew in landing configuration to fly slow enough to stay with the tanker. (U.S. Air Force)
A Boeing B-52 Stratofortress refuels in flight from a Boeing KC-97 Stratotanker. The KC-97 had to enter a shallow dive to increase its speed, while the B-52 flew in landing configuration to stay with the tanker. (U.S. Air Force)

Four inflight refuelings from piston-engine Boeing KC-97 Stratotankers were required. More than 100 KC-97s participated in Operation POWER FLITE.

One of the primary B-52s, La Victoria, 53-0397, commanded by Major George Kalebaug, was unable to refuel in flight because of ice build-up in its refueling receptacle. The bomber diverted to Goose Bay, Labrador. A second B-52, a spare, as planned, left the flight over North Africa, diverting to an air base in England.

All 27 crewmembers of the three bombers were awarded the Distinguished Flying Cross by General Curtis LeMay. The Mackay Trophy for “the most meritorious flight of the year” was awarded to the 93rd Bombardment Wing.

Lucky Lady III was retired to the National Museum of the United States Air Force. It was scrapped in 1984. 53-0397 went to The Boneyard at Davis-Monthan AFB in 1966, preceded by 53-0398 in 1965.

Flight helmets of the crew of Lucky Lady III, March AFB, 18 January 1957. (LIFE Magazine via Jet Pilot Overseas.)
Flight helmets of the crew of Lucky Lady III, March AFB, 18 January 1957. (LIFE Magazine via Jet Pilot Overseas.)

This record-breaking around the world flight was dramatized in the 1957 Warner Bros. movie “Bombers B-52,” which starred Natalie Wood, Karl Malden and Efrem Zimbalist, Jr.

Poster for the 1957 motion picture, "Bombers B-52".
Poster for the 1957 motion picture “Bombers B-52” (Warner Bros.)

The 93rd Bombardment Wing (Heavy) was the first operational Air Force unit to receive the B-52 Stratofortress, RB-52B 52-8711, on 29 June 1955.

Fifty B-52Bs were built by Boeing at its Plant 2, Seattle, Washington. The B-52B/RB-52B was operated by a six-man flight crew for the bombing mission, and eight for reconnaissance. These were the aircraft commander/pilot, co-pilot, navigator, radar navigator/bombardier, electronic warfare officer and gunner, plus two reconnaissance technicians when required.

The airplane was 156.6 feet, (47.73 meters) long with a wingspan of 185.0 feet (56.39 meters) and overall height of 48.3 feet, (14.72 meters). The wings were mounted high on the fuselage (“shoulder-mounted”) to provide clearance for the engines which were suspended on pylons. The wings had a 6° angle of incidence and 2° 30′ anhedral. The wings’ leading edges were swept aft 36° 54′. The bomber’s empty weight was 164,081 pounds (74,226 kilograms), with a combat weight of 272,000 pounds (123,377 kilograms) and a maximum takeoff weight of 420,000 pounds (190,509 kilograms).

Early production B-52Bs were powered by eight Pratt & Whitney J57-P-1WA turbojet engines, while later aircraft were equipped with J57-P-19W and J57-P-29W or WA turbojets. The engines were grouped in two-engine pods on four under-wing pylons. The J57 was a two-spool, axial-flow engine with a 16-stage compressor section (9 low- and 7-high-pressure stages) and a 3-stage turbine section (1 high- and 2 low-pressure stages). These engines were rated at 8,250 pounds of thrust (36.700 kilonewtons), each, Maximum Continuous Power; 9,500 pounds (42.258 kilonewtons), Military Power (30 minute limit); or 11,400 pounds (50.710 kilonewtons) with water injection (5 minute limit). The J57-P-1WA was 3 feet, 4.5 inches (1.029 meters) in diameter, 13 feet, 1.7 inches (4.006 meters) long, and weighed 4,210 pounds (1,910 kilograms).

The B-52B had a cruise speed of 453 knots (521 miles per hour/839 kilometers per hour) at 35,000 feet (10,668 meters), and a maximum speed of 547 knots (630 miles per hour/1,013 kilometers per hour) at 19,900 feet (6,065 meters). The service ceiling with the maximum bomb load was 48,650 feet (14,829 meters), and 55,350 feet (16,855 meters) for a ferry mission.

Tail gun turret of an early B-52 Stratofortress

Maximum ferry range was 6,460 nautical miles (7,434 statute miles/11,964 kilometers). With the maximum bomb load, the B-52B had a combat radius of 2,620 nautical miles (3,015 statute miles/4,852 kilometers), or 3,135 nautical miles (3,608 statute miles/5,806 kilometers) with the design load. With inflight refueling, though, the bomber’s range was essentially world-wide.

Defensive armament consisted of four Browning Aircraft Machine Guns, Caliber .50, AN-M3, mounted in a tail turret with 600 rounds of ammunition per gun. These guns had a combined rate of fire in excess of 4,000 rounds per minute. (Some B-52s were armed with four M24A1 20 mm autocannons with 400 rounds per gun.)

The B-52B’s maximum bomb load was 43,000 pounds (19,505 kilograms). It could carry a maximum of 27 1,000-pound conventional explosive bombs. For strategic missions, the bomber carried one Mark 6 nuclear bomb, which had a yield ranging from 8 to 160 kilotons, depending on Mod, or two Mark 21 thermonuclear bombs, each with a yield of 4–5 megatons.

Boeing manufactured 744 B-52 Stratofortress bombers, with the final one rolled out at Wichita, Kansas, 22 June 1962. As of 27 September 2016, 77 B-52H bombers remain in service with the United States Air Force.

Boeing B-52B-35-BO Stratofortress 53-0394, Lucky Lady III. (LIFE Magazine via Jet Pilot Overseas)

© 2019, Bryan R. Swopes

17 January 1966

Boeing KC-135A-BN Stratotanker 58-0004 refuels Boeing B-52G-75-BW Stratofortress 57-6741. These are the same type aircraft that were involved in the 1966 Palomares Incident. (Boeing)

17 January 1966: A United States Air Force Boeing B-52G-115-BW Stratofortress, 58-0256, and its 7-man crew, along with a second B-52, were flying an Airborne Nuclear Alert patrol over the Mediterranean Sea. The bomber, call sign “Tea 16,” was armed with four Mark 28 nuclear bombs carried in its bomb bay.

At approximately 10:30 a.m., the two B-52s rendezvoused with two Boeing KC-135A-BN Stratotankers, based at Morón Air Base, Spain, for the second aerial refueling of the mission. The aircraft were at 31,000 feet (9,448 meters) off the southern coast of Spain.

Major Larry G. Messinger, a veteran of World War II, aboard as a relief pilot, was flying Tea 16 from the left seat. The aircraft commander, Captain Charles J. Wendorf, was in the right, co-pilot’s seat, while 1st Lieutenant Richard J. Rooney, the assigned co-pilot, rode in the Instructor Pilot’s seat.

Major Messinger later said, “We came in behind the tanker, and we were a little bit fast, and we started to overrun him a little bit. . . .”

A boom operator’s view as a B-52 Stratofortress refuels. (John E. Considine/NASM)

B-52G 58-0256 collided with the refueling boom of “Troubadour 14” (KC-135A 61-0273).¹ The boom penetrated the bomber’s fuselage, broke structural members and the left wing broke off. The B-52 exploded. The fully-loaded tanker, on fire, went into a steep dive. At 1,600 feet (488 meters), it also exploded.

The four crewmen aboard the tanker were killed. Three of the seven men on the B-52 ejected, and the co-pilot, who was not in an ejection seat, literally fell out of the disintegrating bomber. The navigator’s parachute did not open and he was killed. Three others were unable to escape the doomed airplane and were also killed.

Wreckage of B-52G 58-0256 at Palomares, Spain, January 1966. (Kit Talbot/The New York Times)

As the B-52 broke apart, the four nuclear bombs it carried in the bomb bay fell free. Three of them fell near the fishing village of Palomares. In two of these, the conventional explosives that “implode” the plutonium to start a chain reaction, detonated on impact, but a nuclear explosion did not occur. However, plutonium was scattered over the area. The third bomb was recovered intact, though it was slightly damaged. The retarding parachute of the fourth Mark 28 opened and it was carried offshore by the wind and fell into the Mediterranean Sea.

The missing B28 is recovered. (Department of Energy)

A massive recovery operation took place. The fourth bomb was recovered after five months. It had come to rest in an underwater canyon at a depth of 2,550 feet (777 meters).

1,400 tons of soil was packed into more than 6,000 steel drums and taken to the United States.
1,400 tons of soil was packed into more than 6,000 steel drums and taken to the United States.

558 acres (226 hectares) of land in and around Palomares was contaminated. The soil was removed and placed in steel barrels for transportation to the United States for burial at the Savannah River Plant, a nuclear reservation in South Carolina.

Three airmen position a B28Y1 1.1 megaton thermonuclear bomb for loading aboard a B-52 Stratofortress. (U.S. Air Force)
Three airmen position a B28Y1 thermonuclear bomb for loading aboard a B-52 Stratofortress. (TSgt. Boyd Belcher, U.S. Air Force)

The Mark 28 was a two-stage radiation-implosion thermonuclear bomb which was designed by the Los Alamos National Laboratory and produced from January 1958 to May 1966. In 1968, it was redesignated B28. More than 4,500 were manufactured in as many as 20 variants. Explosive yield varied between 70 kilotons and 1.45 megatons. The B28Y1 in the photograph above is a 1.1 megaton weapon. The bomb remained in service until 1991.

¹ Author Barbara Moran writes:

     What happened next is disputed. Wendorf says he still had his eye on the tanker when he heard an explosion coming from the back of the B-52.  The plane pitched down and to the left. Fire and debris shot into the cockpit and the plane began to come apart.

     The other pilots agree that the accident began with an explosion in the back of the B-52. But the official accident report tells a different story. Investigators concluded that the B-52 overran the KC-135 and then pitched upward and rammed the tanker. The collision ripped the tanker’s belly open, spilling jet fuel through the plane, onto the bomber, and into the air. A fireball quickly engulfed both planes.

     Rooney and Wendorf suspect that fatigue failure—a problem in the B-52—caused a portion of the tail to break off. Flying debris sparked an explosion in one of the gas tanks, and the plane came apart. After the initial explosion, the bomber may have rammed the tanker—everything happened so quickly that the pilots can’t be sure. But they insist that the explosion came first and that it came from the back of the bomber.

     We may never know conclusively whether a collision triggered the accident. After a crash, it is Air Force custom to bury the wreckage. Because the accident occurred on foreign soil, SAC dumped the debris into the ocean. The one surviving member of the investigation board has refused to speak publicly about the accident.

The Day We Lost the H-Bomb, by Barbara Moran, Presidio Press, 2009, Chapter 2, Pages 30–31

© 2025, Bryan R. Swopes

18 December 1972

TSGT Samuel O. Turner, U.S. Air Force, rests his hand on one of four air-cooled Browning AN-M3 .50-caliber aircraft machine guns of a B-52 tail turret. (“Bulldog Bulletin, Fall 1985”)

18 December 1972: On the first night of Operation Linebacker II, Staff Sergeant Samuel Olin Turner, United States Air Force, the gunner aboard Boeing B-52D-35-BW Stratofortress 56-676 (call sign “Brown 3”), saw a supersonic Mikoyan-Gurevich MiG 21 interceptor approaching the bomber from below and behind, with a second interceptor following at a distance.

As the Mach 2 fighter made a firing pass, Turner directed the four Browning AN-M3 .50-caliber machine guns of the bomber’s tail turret at the enemy fighter and opened fire. In a single 6–8 second burst, he expended 694 rounds of ammunition. He saw “a gigantic explosion to the rear of the aircraft.”

Master Sergeant Louis E. LeBlanc, the gunner on another B-52, “Brown 2,” had also seen the MiG 21 and confirmed Turner’s kill.

A Mikoyan-Gurevich MiG-21 interceptor at the National Museum of the United States Air Force, in the markings of the VPAF. (U.S. Air Force)

Staff Sergeant Turner was the first B-52 gunner to be officially credited with shooting down an enemy fighter, and the first aerial gunner to shoot down an enemy aircraft since the Korean War. He was awarded the Silver Star.

The citation reads,

Silver Star

Staff Sergent Samuel O. Turner distinguished himself by gallantry in connections with military operations against an opposing armed force as a B-52 Fire Control Operator near Hanoi, North Vietnam, on 18 December 1972. On this mission, Sergeant Turner’s aircraft was attacked by numerous enemy fighters. During these attacks he skillfully operated his gunnery radar equipment to train his guns on the attackers and destroyed one of them. By his courage in the face of hazardous combat conditions and outstanding professional skill, he successfully defended his aircraft and its crew and enabled it to complete its mission and return safely to base. By his gallantry and devotion to duty, Sergeant Turner has reflected great credit upon himself and to the United States Air Force.

Staff Sergeant Samuel O. Turner is awarded the Silver Star by General John C. Meyer, Commander in Chief, Strategic Air Command, for his actions in combat over Hanoi during Linebacker II. (U.S. Air Force)
The tail gun turret of B-52D 56-676. (U.S. Air Force)
The tail gun turret of Boeing B-52D Stratofortress 56-676. (U.S. Air Force)

Samuel Olin Turner was born at Atlanta, Georgia, 15 August 1942. He was the son of William Edgar Turner and Beatrice Honnicutt Turner. Sam Turner attended Russell High School at East Point, Georgia, then studied at David Lipscomb College, Nashville, Tennessee.

Turner enlisted in the United States Air Force, 13 January 1970, and was trained as a gunner on Boeing B-52s. He served in Southeast Asia for two years. In 1977, Technical Sergeant Turner transitioned to the B-52H Stratofortress, which was equipped with a remotely-operated M61A1 20 mm six-barreled rotary cannon.

The gunner’s position in the tail of a Boeing B-52D Stratofortress. (MSGT L. Emmett Lewis, U.S. Air Force/U.S. National Archives)

Senior Master Sergeant Samuel O. Turner was released from the U.S. Air Force 31 January 1982. In addition to the Silver Star, during his military career Turner had been awarded the Distinguished Flying Cross and a number of Air Medals. He died at Stockbridge, Georgia, 9 April 1985, at the age of 42 years.

The Samuel O. Turner Airman Leadership School at Ellsworth Air Force Base, near Rapid City, South Dakota, is named in his honor.

56-676 was the last Boeing B-52D Stratofortress in service. It is on display at Fairchild Air Force Base, Spokane, Washington.

A Boeing B-52D Stratofortress of the 307th Strategic Wing over Vietnam during Operation Linebacker II, December 1972. (U.S. Air Force)
A Boeing B-52D Stratofortress of the 307th Strategic Wing over Vietnam during Operation Linebacker II, December 1972. (U.S. Air Force)

© 2017, Bryan R. Swopes