United Air Lines Flight 227

Last updated
United Airlines Flight 227
United Airlines N7030U wreckage2.jpg
Flight 227 after the fire
Accident
DateNovember 11, 1965
SummaryCrashed short of runway
due to pilot error
Site Salt Lake City International Airport, Salt Lake City, Utah, United States
40°46′21″N111°59′43″W / 40.77250°N 111.99528°W / 40.77250; -111.99528
Aircraft
Aircraft type Boeing 727-22
Operator United Airlines
Registration N7030U
Flight origin LaGuardia Airport (New York)
1st stopover Cleveland Hopkins International Airport
2nd stopover Chicago Midway Airport
3rd stopover Stapleton International Airport
Last stopover Salt Lake City International Airport
Destination San Francisco International Airport
Occupants91
Passengers85
Crew6
Fatalities43
Injuries35
Survivors48

United Airlines Flight 227 (N7030U), a scheduled passenger flight from LaGuardia Airport New York City to San Francisco International Airport, California, crashed short of the runway while attempting a scheduled landing at Salt Lake City International Airport, Utah, on Thursday, November 11, 1965. [1] [2] [3] [4] [5]

Contents

Accident details

N7030U, the aircraft involved,
at Kansas City in July 1965 United Airlines Boeing 727-22 N7030U.jpg
N7030U, the aircraft involved,
at Kansas City in July 1965

Flight 227, operated by a Boeing 727-22, registration N7030U, [6] departed LaGuardia Airport at 08:35 MST (10:35 EST) for San Francisco, California, with scheduled stops in Cleveland, Chicago, Denver, and Salt Lake City. The flight to Denver was routine. In Denver a new flight crew took control of the plane: Captain Gale C. Kehmeier, First Officer Philip E. Spicer, and Second Officer Ronald R. Christensen. The flight took off from Denver at 16:54 MST, [4] a few minutes after sunset.

During the flight, the first officer was flying the aircraft under the direction of the captain. At 17:35, it was cleared to descend to 16,000 feet (4,900 m) by the Salt Lake City Air Route Traffic Control Center. [4]

At 17:47, now under the direction of terminal control, the plane was cleared to approach. At 17:48, in response to the controller's request for the plane's altitude, the pilot replied "Okay we've slowed to two fifty (250 knots (460 km/h; 290 mph)) and we're at ten (10,000 feet (3,000 m)) we have the runway (34L) in sight now, we'll cancel and standby with your for traffic." The plane began to descend, but its rate of descent was approximately 2,300 feet (700 m) per minute, nearly three times the recommended rate of descent. [4]

At approximately 17:49:30, the plane passed the outer marker 5.7 miles (9.2 km) from the runway threshold at approximately 8,200 feet (2,500 m), over 2,000 feet (610 m) above the normal glideslope. [4] The elevation of the Salt Lake City airport is 4,227 feet (1,288 m) above sea level.

At approximately 17:51, one minute prior to impact, the plane passed 6,300 feet (1,900 m); it was still 1,300 feet (400 m) above the normal glide slope and still descending at 2,300 feet (700 m) per minute. Around this time the first officer reached forward to advance the thrust levers to increase thrust, but the captain brushed his hand aside and said "Not yet." [4] At thirty seconds prior to impact, the plane was 1,000 feet (300 m) above and 1.25 miles (2.0 km) from the runway. The captain indicated in post-crash interviews that at this point he moved the thrust levers to the takeoff power position, but the engines failed to respond properly. However, both the testimonies of the other members of the flight crew and the data from the flight data recorder (FDR) indicate that the attempt to add power occurred only about ten seconds before impact. [4]

At 17:52, the plane struck the ground 335 feet (102 m) short of the runway, then slid 2,838 feet (865 m). The separation of the landing gear and the No. 1 engine was the result of impact loading in excess of their design structural strength. The failure of the landing gear caused the rupture of fuel lines in the fuselage. The resulting fire, rather than the impact of the crash, accounted for all 43 fatalities. [4] The incident occurred approximately forty minutes after sunset.

The Boeing aircraft had been delivered to United seven months earlier in April, and had less than 1,800 hours of flight time. [4]

Investigation conclusions

This accident was blamed entirely on the bad judgment of the captain, Gale C. Kehmeier, for conducting the final approach from a position that was too high and too close to the airport to permit a descent at the normal and safe rate. He allowed the plane to fly the final approach segment (in visual conditions) at a descent rate of 2,300 feet (700 m) per minute (triple the safe descent rate). When the plane crossed the outer marker, which marks the final approach segment, it was 2,000 feet (610 m) too high. [4] [5] [7]

The first officer, who was flying the aircraft under the captain's direction, attempted to add engine thrust. But the captain told him no and brushed his hands off the thrust levers. The captain took over the controls during the last few seconds, but it was too late to avoid crashing short of runway 34L. The plane impacted with a vertical acceleration force of 4.7-g. [4] [5] [7]

That severe impact force broke off the left main landing gear and caused the right main gear to thrust up through the fuselage, rupturing pressurized fuel lines in the process. While the plane continued to slide down the runway on the nose gear and fuselage, pressurized fuel ignited inside the cabin, turning a survivable accident into a fatal accident. Many of the 50 people who successfully evacuated were severely burned. [4] [7]

The CAB (Civil Aeronautics Board) accident investigation revealed that the captain had a checkered training history. He had failed his initial jet transition training course, and was returned to flying the DC-6. Later on, he also failed to pass a routine annual instrument proficiency check. [4] [7]

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References

  1. "Death estimates range up to 44 in Utah airliner crash". Lewiston Morning Tribune. (Idaho). Associated Press. November 12, 1965. p. 1.
  2. "40 persons killed in jetliner fire". Eugene Register-Guard. (Oregon). Associated Press. November 12, 1965. p. 1A.
  3. "United Air Lines jet plane crashes at Salt Lake airport". The Bulletin. (Bend, Oregon). UPI. November 12, 1965. p. 1.
  4. 1 2 3 4 5 6 7 8 9 10 11 12 13 "Aircraft Accident Report". United Air Lines, Inc. Boeing 727, N7030U Salt Lake City, Utah November 11, 1965. Civil Aeronautics Board. June 7, 1966. File No. 1-0032.
  5. 1 2 3 NTSB (November 11, 1965). "NTSB Identification: DCA66A0004". NTSB. Retrieved 2006-12-18.
  6. "FAA Registry (N7030U)". Federal Aviation Administration.
  7. 1 2 3 4 White, Gordon Eliot (June 7, 1966). "CAB places crash blame squarely on pilot of jetliner". Deseret News. (Salt Lake City, Utah). p. B1.