Boeing B-52 Stratofortress

The crew was engaged in a local training flight at Spokane AFB, consisting of visual and instruments approaches and landings. While approaching runway 23, at a distance of about three miles from the threshold, the crew switched from visual mode to instruments. In the mean time, another B-52 registered 56-0681 which was on first position must switch from instruments to visual mode. To follow the approach procedures and as both crews were not coordinated, the approach controller instructed the first crew to gain altitude while turning to the right and instructed the second crew to reduce his altitude while turning to the left. Few seconds later, at an altitude of 900 feet, both aircraft collided and crashed. On board 56-0681, five crew members were killed while two others were seriously injured. On board 56-0661, only one crew survived, all eight others have been killed.

The crew was completing a local training mission at Loring AFB. After several touch-and-go maneuvers, the pilots started a new approach. In poor visibility due to bad weather conditions, the airplane was too low on final and crashed in a prairie located about three miles south of the airbase. The aircraft was destroyed, eight crew members were killed while a ninth occupant was killed.
Crew:
Maj Kirkwood G, Myers, pilot,
Lt Lane L. Kittle, copilot,
Lt Leonard M. Corcaro,
Sgt Oran C. Reily,
Lt Robert F. Testerman,
Lt Leslie N. Martin Jr.,
Lt James F. Thompson,
Maj Milo C. Johnson, instructor navigator, †
Maj Moody E. Denton, pilot instructor.

On final approach to Ellsworth AFB, while completing a local training sortie, all eight engine lost power. The aircraft stalled and crashed onto a building containing the equipment for the instrument landing approach system and located short of runway. Two crew members were killed while six others were injured. Three people working in the building were killed as well.
Crew:
Cpt Melvin J. Rudd, pilot,
Sgt Richard Gilbert, navigator,
Cpt Verle Rusk, navigator,
1st Lt Leonard R. Scotty, electronic countermeasures officer,
T/Sgt Oscar Orrs, gunner, 1,
Cpt John O'Connell Jr., navigator, †
1st Lt Kenneth B. Kaeppler, radar navigator. †
Those killed on ground were:
A1c Ronald R. Mitchell,
A1 James E. Ferrell,
Mr. Glen M. Allen.

At approximately 4:00 p.m. on Thursday, December 12, 1957, U.S. Air Force B-52D Stratofortress, No. 56-0597, from the 92nd Bombardment Wing, was taking off from Runway 5 at Fairchild Air Force Base (AFB) on a routine training mission. According to eyewitnesses, as the aircraft left the runway, it made an abnormally steep climb to an altitude of approximately 2,000 feet. Fire started coming from the jet engines and pieces of metal began flying off the engine cowlings and mounts. The aircraft stalled, executed an abrupt, right wingover and appeared to level off. But, at an altitude of approximately 500 feet, the plane nose dived and crashed in a stubbled wheat field one mile west of the base. Exploding jet fuel sent a large column of smoke into the sky, attracting scores of curious onlookers. A crew member was injured while eight other occupants were killed:
Crew:
Maj Ralph Romaine Alworth, †
Cpt Douglas Earl Gray, †
1st Lt James Dennis Mann, †
Col Clarence Arthur Neely, †
Cpt Thomas N. Peebles, †
Cpt Douglas Franklin Schwartz, †
Cpt Herbert Henry Spiller Jr., †
1st Lt Jack Joseph Vainisi, †
T/Sgt Gene I. Graye.
Source: http://www.historylink.org/File/9857

The crew was completing a local training sortie at Castle AFB, consisting of touch and go manoeuvre. After touchdown, the undercarriage failed and the airplane slid on the runway before coming to rest. There were no injuries but the aircraft was damaged beyond repair.

While on a test flight out from Wichita, the aircraft suffered a loss of electrical power while flying in negative G conditions. The aircraft went out of control and crashed near Skiatook, about 15 miles north of Tulsa. A crew member was injured while three other were killed.

During a training flight out from Loring AFB, the crew encountered an unexpected situation. The copilot was able to bail out before the aircraft crashed in a huge explosion in Perth-Andover, about 15 miles southeast of the airbase. The copilot survived while eight other occupants were killed.
Crew:
Cpt Richard A. Jenkins, †
Cpt William C. Davidson, †
Cpt John E. McCune, †
Cpt Marquid H. D. Myers, †
T/ Sgt Ray A. Miller, †
1st Lt Joe L. Church 3.

Soon after a night takeoff from Castle AFB, while climbing to a height of 500 feet, the aircraft adopted a 5° nose down attitude. The crew elected to correct this but the aircraft went into a descent and struck the ground 4 miles north of the airbase and exploded on impact, killing all 10 crew members.
Crew:
Cpt John A. Goddard, aircraft commander,
Cpt Richard M. Wikstrom, pilot,
Cpt Leland Fulton Burch, navigator,
Maj Robert Louis Sherman, ECM operator
Cpt Jack Eugene Welch, radar-bombardier,
Maj Bryant Guernsey Gay, electronic counter measure operator,
T/Sgt William J. Maguire, radio operator,
Cpt Nick Sam Koss, radar-bombardier instructor,
Cpt Charles Warren Schweer, ECM instructor,
T/Sgt Gerald Everett Riley, tail gunner.

En route, the aircraft caught fire, apparently on a wing. The crew elected to return to his base but control was lost. Two crew members were able to bail out and were later recovered while all five other occupants were killed when the airplane crashed along Highway 99, about 9 miles southeast of Madera.

The crew was performing a training mission out from Castle AFB when a fire broke out apparently on the leading edge of the right wing. It appears that four crew members were able to bail out and were found alive while four others were killed when the aircraft crashed in Tracy.
Crew:
Maj Edward L. Stefanski, pilot, †
Maj Michael Shay, copilot,
Maj Albert K. Brown, pilot, †
Col Patrick D. Fleming, instructor pilot, †
Cpt James Fredrickson, navigator, †
Maj Harold F. Korger, radar observer,
Maj Billie M. Beardsley, radio operator,
M/Sgt Williard Milo Lucy, tail gunner.