United Airlines

The takeoff warning horn sounded shortly after commencing takeoff from runway 09R. The takeoff was continued as the crew tried to figure out what caused the warning. The horn ceased prior to reaching rotate speed. The stick shaker came on and thrust was added, but the aircraft failed to climb and the captain elected to discontinue the takeoff. The 727 settled back to the macadam shoulder off the right side of the runway and struck a ditch, coming to rest 1,100 feet beyond the runway end and 300 feet right of the extended centreline. The aircraft was destroyed by a post crash fire and all three crew members were injured. The flaps had been set at 2° instead of takeoff range of 5°-25°.

After touchdown at Akron-Canton Airport, the four engine airplane encountered difficulties to stop within the remaining distance. It overran, lost its undercarriage and went down an 23 feet embankment before coming to rest 400 feet further. A passenger was seriously injured while all other occupants escaped uninjured. The aircraft was written off.

After touchdown at Raleigh-Durham Airport by night, the nosewheel collapsed. The airplane slid on the runway for several yards until it came to rest. All 43 occupants escaped uninjured while the aircraft was later considered as damaged beyond repair.

Following a normal touchdown at Norfolk Municipal Airport, the crew started the braking procedure when the airplane collided with a snow plow. A wing was torn off and the snowplow was dragged over several meters. There were no injuries but the aircraft was damaged beyond repair.

The crew was completing a local training flight at Denver-Stapleton Airport. On touchdown, one of the nose wheel tire burst. The landing gear collapsed and the airplane slid on its nose for several yards before coming to rest. All four crew members were uninjured while the aircraft christened 'Mainliner Capt Ralph Jonston was considered as damaged beyond repair.

Flight 227 took off from New York-LaGuardia (LGA) for a flight to San Francisco (SFO) via Cleveland (CLE), Chicago (MDW), Denver (DEN) and Salt Lake City (SLC). The aircraft took off from Denver at 16:54 and climbed to its assigned cruising altitude of FL310. At 17:38 flight 227 began its descent for Salt Lake City. The flight proceeded in accordance with radar vectors. After a radar handoff to Salt Lake City Approach Control new clearance altitudes were given. At 17:47 the approach controller advised, "United seventy twenty seven ... five miles south of Riverton Fan Marker coming on localizer course cleared for ILS runway three four left approach." The pilot replied "Okay we're slowed to two fifty (Knots) and we're at ten (10,000 feet) we have the runway in sight now, we'll cancel and standby with you for traffic." Control of the flight was transferred to the tower and at 17:49:40 landing clearance was issued. The aircraft crossed the outer marker over 2,000 fee & above the ILS glide slope. The rate of descent during the final approach exceeded 2,000 ft/min, approximately three times the United Air Lines recommended rate of descent for landing approaches. The first officer attempted to apply power but the captain stopped him. Power was then applied too late to arrest the rate of descent. The airplane touched down 335 feet short of the threshold of runway 34L. The right and left main landing gear began to separate and the airplane slid onto the runway. Severe upward and rearward impact forces from the right main Landing gear assembly produced a large impact hole and ruptured fuel lines and the no. 3 generator leads between fuselage station 1030 and 1130 on the right side. The fuel was ignited by sparks from the fuselage scraping on the runway and/or the severed generator leads. 13 passengers were uninjured while 35 people were wounded. 43 other occupants were killed.

During the takeoff roll at Huntsville Airport, when V1 speed was reached, the pilot-in-command started the rotation when the nose gear retracted. The airplane sank on its nose, slid for several yards, overran and came to rest 300 feet further. All 16 occupants were evacuated safely while the aircraft was damaged beyond repair.

A United Air Lines, Inc., Boeing 727-22, N7036U, Flight 389 (UAL 389) was a regularly scheduled domestic passenger/cargo flight from LaGuardia Airport, New York to O'Hare International Airport, Chicago, Illinois. The aircraft had arrived at LaGuardia, on the date of the accident, following a trip from Los Angeles, California, with stops at Sacramento, California, Reno, Nevada, Denver, Colorado, and Chicago, Illinois. The flight crew of UAL 389 reported for duty at LaGuardia Airport one hour before scheduled departure where they prepared for the flight to Chicago. The stewardesses arrived with the aircraft from Chicago. Persons known to have been in contact with the crew prior to their departure from New York noticed nothing unusual about their behavior or appearance. UAL 389 departed LaGuardia at 1952 on an Instrument Flight Rules (IFR) flight plan at FL 350 and estimated their arrival time at O'Hare to be 2127. The crew reported at FL 350 at 2011.35. At 2102 UAL 389 came under control of the Chicago Air Route Traffic Control Center (ARTCC) reporting its altitude as FL 350 and was cleared to the O'Hare Airport via Pullman VORTAC direct to the Northbrook VORTAC, direct O'Hare and to maintain FL 350. This clearance was acknowledged correctly and the crew was advised that radar contact had been established. At 2103 the ARTCC controller cleared UAL 389 to descend to FL 240 and to "start descent now through 31" (FL 310). UAL 389 replied "...down to 240, leaving three five." At 2106 UAL 389 was cleared to continue its descent to 14,000 feet and given an altimeter setting of 29.90 inches for O'Hare. This message was acknowledged immediately and in reply to the controller's inquiry the crew reported they were leaving FL 280 "now." At 2109 the flight was instructed to change frequencies and within the same minute reported out of FL 260 descending to fourteen thousand. This was the last altitude information received from the crew. At 2111 the flight was cleared to descend to 6,000 feet and the clearance was immediately acknowledged correctly. At 2118:35 control of the flight was passed to Chicago Approach Control (ORD). The radar target of UAL 389 was in the vicinity of the Sturgeon Intersection (intersection of the 011 radial of Chicago Heights and 076 radial of Northbrook VORTAC, 28 miles east of Northbrook VORTAC). At 2118:38 the target was observed approximately 2 miles east of the intersection. At 2119:36 the crew contacted ORD and was advised that radar contact had been established. At this time the aircraft target was 2-3 miles west of Sturgeon. UAL 389 was cleared to maintain 6,000 feet and to depart the Northbrook VORTAC on a heading of 240 degrees. The flight was advised that instrument landing system approaches were in progress on runway 14R at O'Hare and that the current O'Hare altimeter setting was 29.93. The pilot read back the altimeter setting incorrectly, the controller corrected him, and the pilot repeated it correctly. This was the last communication received from the flight and ended at 2120:03. The airplane crashed into Lake Michigan and exploded upon impact. All 30 occupants were killed.

A United Air Lines, Inc., Vickers Viscount 745D, N7405, Flight 823, crashed 2-1/4 rules northeast of Parrottsville Tennessee, at 1815 e.s.t., July 9, 1964. Thirty-four passengers and the four crew members died in the crash. One passenger died of injuries following a free fall from the aircraft before the crash. The aircraft was destroyed by fire and impact damage. Flight 823 was a regularly scheduled operation from Philadelphia, Pennsylvania, to Huntsville, Alabama, with en route stops at Washington, D. C., and Knoxville, Tennessee. The flight operated without any reported discrepancies or difficulties until approximately 1810 e.s.t., when it was observed flying at low altitude trailing smoke. The flight continued in a southwesterly direction and at a point approximately 1.6 nautical rules before the impact site, a passenger was seen falling from the aircraft, and a short time later a cabin window was seen falling. The aircraft was then observed going into a nose-high attitude, the left wing and the nose went down, and the aircraft dived into the ground, exploded, and burned.

United Air Lines Flight 297, a Vickers-Armstrong Viscount Model 745D, N7430, crashed in a wooded area six miles west-southwest of Ellicott City, Maryland, at approximately 1224 e.s.t., on November 23, 1962. All thirteen Passengers and a crew of four were fatally injured. Flight 297 was en route from Newark, New Jersey to Washington, D. C. The flight was operating at an assigned altitude of' 6,000 feet when it apparently penetrated a flock of Whistling Swans. At least two of these a were struck by the aircraft. One swan collided with the right horizontal stabilizer inflicting superficial damage only. The other bird punctured the left horizontal stabilizer, traveled through the structure, and dented the elevator as it egresses. The weakened structure failed in this area. rendered the aircraft uncontrollable, and resulted in, the aircraft striking the ground in a nose-low inverted attitude.