Eastern Air Lines Flight 375

Eastern Air Lines Flight 375
	Wreckage of the Lockheed L-188
Accident
Date	October 4, 1960
Summary	Bird strike leading to engine damage and aerodynamic stall
Site	Winthrop Bay, near Logan International Airport, Boston, Massachusetts, United States; 42°21′57″N70°59′18″W / 42.36583°N 70.98833°W
Aircraft
Aircraft type	Lockheed L-188A Electra
Operator	Eastern Air Lines
Registration	N5533
Flight origin	Logan International Airport, Boston, Massachusetts
1st stopover	Philadelphia International Airport, Philadelphia, Pennsylvania
2nd stopover	Charlotte Municipal Airport, Charlotte, North Carolina
Last stopover	Greenville Municipal Airport, Greenville, South Carolina
Destination	Atlanta Municipal Airport, Atlanta, Georgia
Occupants	72
Passengers	67
Crew	5
Fatalities	62
Injuries	10
Survivors	10

Last updated April 22, 2024

Eastern Air Lines Flight 375, registration N5533,^[1] was a Lockheed L-188 Electra aircraft that crashed on takeoff from Logan International Airport in Boston, Massachusetts, on October 4, 1960. Ten survived, nine with serious injuries, but 62 of 72 on board were killed in the accident. It remains the deadliest bird strike in aviation history.

Accident

N5533 and its crew came into Logan that day as Flight 444 from New York City's LaGuardia Airport. The plane and crew turned around in Boston as Flight 375, which was scheduled to travel to Philadelphia, Pennsylvania, Charlotte, North Carolina, and Atlanta, Georgia. The pilots had filed an IFR flight plan that would have had the aircraft cruising to Philadelphia at 10,000 feet. At 5:35 pm, the aircraft pulled away from the terminal and taxied to the threshold of Runway 09^[2] for an easterly departure; the tower cleared it for takeoff at 5:39 pm.

The takeoff was normal until approximately six seconds after liftoff. At that point the aircraft encountered a large flock of starlings. The aircraft veered to the left for a moment then resumed the runway heading. At a height of about 120 feet small birds were sucked into the engines, causing the propeller on engine 1 to be feathered and shut down. Engines 2 and 4 lost thrust momentarily but recovered.^[2] At a height of 200 feet the airplane veered left again and sank nose-up to about 100 feet in altitude. It then rolled to the left, the nose dropped, and the aircraft crashed into Winthrop Bay.

The fuselage broke into two pieces; eight passengers and two flight attendants in the rear section were thrown out of their seats and were quickly picked up by boats already in the bay. The front section sank to the bottom of the bay, taking the majority of passengers and flight crew with it. A Navy Reserve commander who arrived at the scene of the accident shortly afterwards stated many passengers were stuck in their seats and unable to get out before sinking into the bay.^[2] The entire accident sequence from the beginning of takeoff to the impact in the water took less than one minute.

Investigation

Investigators, including Operations Group Chairman Bobbie R. Allen with the Civil Aeronautics Board (the predecessor of the NTSB) determined that engines 2 and 4 had each ingested at least one bird, and that engine 1 had ingested at least eight. The bird damage caused the number 1 propeller to autofeather and the engine to shut down at the same time that damage to engines 2 and 4 prevented them from developing full power at a critical stage of flight. The aircraft, unable to climb, went into a stall. The power interruption to the port engines probably caused the left wing to stall; the wing dropped and the aircraft crashed into the water. There was also evidence that birds had crashed into the windscreen, reducing the pilots' visibility; in addition, bird remains had clogged the pitot tubes, making the pilots' airspeed indicators unreliable.

It was eventually determined that turboprop engines such as those on the Electra were highly sensitive to damage from bird strikes. The CAB recommended to the CAA, the predecessor of the FAA, that steps be taken to reduce the damage caused by bird strikes to turbine engines, and that ways be found to reduce the populations of birds around airports.

However, another possible factor that came to light later was a maintenance defect in the copilot's seat. During civil litigation by the family of a deceased passenger, it was discovered that the airplane's maintenance records showed that the adjustable seat had accidentally slid backward during a takeoff about six weeks prior to Flight 375. Rather than perform the proper repair of replacing a metal rod, a mechanic used a strand of wire. A subsequent maintenance check on September 19 showed that the copilot's seat would not lock in any position; it was left in that condition. Expert testimony during the trial claimed that the co-pilot of Flight 375 (who during an emergency would typically be flying the plane while the pilot attempts to locate and solve the problem) most likely pushed the rudder pedal to compensate for unexpected yaw. In doing so, it was surmised that this foot pressure caused the seat to slide backward, which caused him to inadvertently pull back on the yoke. This nose-up condition could have been the decisive stall that caused the final plunge into the water.^[3]

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References

↑ "FAA Registry (N5533)". Federal Aviation Administration.
1 2 3 Reints, Renae (October 5, 2017). "Throwback Thursday: The Worst Bird Strike in U.S. History". Boston . Retrieved August 20, 2019.
↑ Newhouse, John (1982). The Sporty Game. New York: Alfred A. Knopf. pp. 94–96. ISBN 0-394-51447-5.

External links

Aircraft Accident Report on Flight 375 from the Department of Transportation's National Transportation Library
Accident description at the Aviation Safety Network
Air Disaster, Vol. 4: The Propeller Era, by Macarthur Job, Aerospace Publications Pty. Ltd. (Australia), 2001 ISBN 1-875671-48-X
"Disasters: Electra's Tragedy". Time . October 17, 1960. Archived from the original on September 25, 2009. Retrieved December 6, 2009.

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[1] "FAA Registry (N5533)". Federal Aviation Administration.

[bostonmagazine-2] 1 2 3 Reints, Renae (October 5, 2017). "Throwback Thursday: The Worst Bird Strike in U.S. History". Boston . Retrieved August 20, 2019.

[3] Newhouse, John (1982). The Sporty Game. New York: Alfred A. Knopf. pp. 94–96. ISBN 0-394-51447-5.

[1]

[2]

[3]

v t e Aviation accidents and incidents in the United States and U.S. territories in the 1960s
1960	National Airlines Flight 2511 Capital Airlines Flight 20 Northwest Orient Airlines Flight 710 Chicago Helicopter Airways Flight 698 World Airways Flight 830 Eastern Air Lines Flight 375 Cal Poly football team New York mid-air collision
1961	Goldsboro B-52 American Airlines Flight 1502 Yuba City B-52 United Air Lines Flight 859 Alaska Airlines Flight 779 TWA Flight 529 Northwest Orient Airlines Flight 706 Imperial Airlines Flight 201/8 Cincinnati Zantop DC-4
1962	American Airlines Flight 1 Continental Airlines Flight 11 Canadian Pacific Air Lines Flight 301 United Air Lines Flight 297 Eastern Air Lines Flight 512
1963	Elephant Mountain B-52 Northwest Orient Airlines Flight 705 Camden PA-24 Northwest Orient Airlines Flight 293 Mohawk Airlines Flight 112 Pan Am Flight 214
1964	Savage Mountain B-52 Eastern Air Lines Flight 304 Paradise Airlines Flight 901A Pacific Air Lines Flight 773 United Air Lines Flight 823 Bonanza Air Lines Flight 114 Flying Tiger Line Flight 282
1965	USAF KC-135 Wichita Eastern Air Lines Flight 663 Pan Am Flight 843 Continental Airlines Flight 12 Allegheny Airlines Flight 604 United Air Lines Flight 389 American Airlines Flight 383 United Air Lines Flight 227 Carmel mid-air (Eastern 853, TWA 42)
1966	NASA T-38 American Flyers Airline Flight 280/D Braniff International Airways Flight 250 West Coast Airlines Flight 956
1967	Lake Central Airlines Flight 527 TWA Flight 553 West Coast Airlines Flight 720 Delta Air Lines Flight 9877 Mohawk Airlines Flight 40 Piedmont Airlines Flight 22 Lake Erie skydiving disaster TWA Flight 159 X-15 Flight 3-65-97 TWA Flight 128
1968	Ozark Air Lines Flight 965 Braniff International Airways Flight 352 Los Angeles Airways Flight 841 Los Angeles Airways Flight 417 Northeast Airlines Flight 946 Japan Air Lines Flight 2 Pan Am Flight 281 Wien Consolidated Airlines Flight 55 Allegheny Airlines Flight 736 Pan Am Flight 799 North Central Airlines Flight 458 Ozark Air Lines Flight 982
1969	Allegheny Airlines Flight 737 Scandinavian Airlines System Flight 933 United Air Lines Flight 266 Hawthorne Nevada Airlines Flight 708 Prinair Flight 277 Delta Air Lines Flight 821 TWA Flight 5787 Newton Cessna 172 crash Allegheny Airlines Flight 853 Mohawk Airlines Flight 411
This list is incomplete.

Eastern Air Lines Flight 375

Contents

Accident

Investigation

See also

Related Research Articles

References

External links