Delta Air Lines Flight 705

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Delta Air Lines Flight 705
Douglas DC-4, Delta Air Lines JP7774318.jpg
Accident
Date10 March 1948
Site Chicago, United States
Aircraft
Aircraft type Douglas DC-4
Operator Delta Air Lines
Flight origin Chicago Municipal Airport, United States
Destination Miami International Airport, United States
Occupants13
Passengers9
Crew4
Fatalities12
Survivors1

Delta Air Lines Flight 705 (flight number: DL705, radio call sign: DELTA 705) was a regularly scheduled Delta Air Lines domestic flight from Chicago Municipal Airport, to Miami International Airport.

Contents

On 10 March 1948, a Douglas DC-4 crashed while taking off from Chicago Municipal Airport. The accident, occurring during the initial climb, killed 12 of the 13 people on board. The accident happened due to a loss of longitudinal controllability but the cause of the loss of control is unknown.

Aircraft

The aircraft was a Douglas DC-4 with the serial number 18390, built during the Second World War as a military version C-54B-15-DO at the Douglas Aircraft Company factory in Santa Monica, California, with military aircraft registration number 43-17190. After its final assembly in 1944 she was delivered to the United States Army Air Forces (USAAF). After its military service ended, the aircraft was converted into a civilian DC-4 and registered for Delta Air Lines on 29 April 1946 with aircraft registration number NC37478. The aircraft was equipped with four Pratt & Whitney R-2000-2SD-13G Twin Wasp radial engines. At the time of the accident, the machine had flown for 6,509 hours. [1]

Crew

There were nine passengers and four crew members on board. The captain was the 36-year-old Grover L. Holloway who was with Delta Air Lines since 1939. He had 9,830 hours of flying hours, including 1,611 hours on a Douglas DC-4 aircraft. The first officer was the 26-year-old John S. Disosway who was with Delta Air Lines since 1946 after gaining extensive experience as a pilot in the US Army Air Forces (USAAF). He had 2,976 hours of flying experience, including 1,366 hours on the Douglas DC-4.

Accident

On 10 March 1948 the plane initially flew from Miami International Airport to Chicago Municipal Airport where it landed at 9:06 pm. For the return flight, the plane departed from the gate at 10:45 p.m. and took off from the right southbound runway was at 10:57 p.m. At the time of the takeoff it was snowing. [2] The takeoff appeared to be normal until an altitude of 150-200 feet was reached. The aircraft took on an increasingly steep pitch angle until it rose almost vertically. At an altitude of 500-800 feet, a stall occurred and the aircraft fell nose-first and over the right wing towards the ground. A partial recovery from the stall was made before the aircraft crashed to the ground and burst into flames. As a result of the accident, the aircraft caught fire. [3] After an hour the fire was still not extinguished and burned down. [4] [5] The four crew members and eight of the nine passengers died.

Investigation

The accident was investigated by the Civil Aeronautics Board. Over a year after the accident, on 13 June 1949 they published their report. The investigators were able to determine the cause of the accident being as a loss of longitudinal controllability of the aircraft. However, they were unable to determine the cause of the loss of control. [1] [6]

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References

  1. 1 2 Crash of a Douglas DC-4 in Chicago: 12 killed, Bureau of Aircraft Accidents Archives
  2. "Skymaster in de V.S. neergestort | Dertien inzittenden gedood". Algemeen Handelsblad (in Dutch). 11 March 1948 via Delpher.
  3. "Vliegramp bij Chicago". Nieuwe Apeldoornsche courant (in Dutch). 11 March 1948 via Delpher.
  4. "Vliegramp bij Chicago". Tubantia (in Dutch). 11 March 1948 via Delpher.
  5. 12 are dead due to crash of a big plane, Mardera Tribune , LVI (10), 11 March 1948
  6. Accident investigation report, Civil Aeronautics Board, 13 June 1949