In an internal combustion engine, fuel starvation is the failure of the fuel system to supply sufficient fuel to allow the engine to run properly, for example due to blockage, vapor lock, contamination by water, malfunction of the fuel pump or incorrect operation, leading to loss of power or engine stoppage. [1] There is still fuel in the tank(s), but it is unable to get to the engine(s) in sufficient quantity. By contrast, fuel exhaustion (also called fuel depletion) is an occurrence in which the vehicle in question becomes completely devoid of usable fuel, with results similar to those of fuel starvation. [2]
All engine-powered modes of transport can be affected by fuel starvation, although the problem is most serious for aircraft in flight. Ships are affected to the extent that without propulsion they cannot maneuver to avoid collisions or beaching. On aircraft, fuel starvation is often the result of incorrect fuel management, for example by selecting to feed the engine from an empty tank while fuel is present in another one. [3]
Many incidents have happened on aircraft where fuel exhaustion or starvation played a role. A partial list of these incidents follows:
A number of aircraft have been abandoned by their crew (both intentionally and sometimes accidentally) when the aircraft has continued on its own until fuel exhaustion caused it to crash:
The Douglas DC-7 is an American transport aircraft built by the Douglas Aircraft Company from 1953 to 1958. A derivative of the DC-6, it was the last major piston engine-powered transport made by Douglas, being developed shortly after the earliest jet airliner—the de Havilland Comet—entered service and only a few years before the jet-powered Douglas DC-8 first flew in 1958. Unlike other aircraft in Douglas's line of propeller-driven aircraft, no examples remain in service in the present day, as compared to the far more successful DC-3 and DC-6.
Pilot error generally refers to an accident in which an action or decision made by the pilot was the cause or a contributing factor that led to the accident, but also includes the pilot's failure to make a correct decision or take proper action. Errors are intentional actions that fail to achieve their intended outcomes. The Chicago Convention defines the term "accident" as "an occurrence associated with the operation of an aircraft [...] in which [...] a person is fatally or seriously injured [...] except when the injuries are [...] inflicted by other persons." Hence the definition of "pilot error" does not include deliberate crashing.
United Airlines Flight 173 was a scheduled flight from John F. Kennedy International Airport in New York City to Portland International Airport in Portland, Oregon, with a scheduled stop in Denver, Colorado. On December 28, 1978, the aircraft flying this route ran out of fuel while troubleshooting a landing gear problem and crashed in a suburban Portland neighborhood near NE 157th Avenue and East Burnside Street, killing 10 people on board.
As of July 2020, a total of 60 Boeing 747 aircraft, or just under 4% of the total number of 747s built, first flown commercially in 1970, have been involved in accidents and incidents resulting in a hull loss, meaning that the aircraft was either destroyed or damaged beyond economical repair. Of the 60 Boeing 747 aircraft losses, 32 resulted in no loss of life; in one, a hostage was murdered; and in one, a terrorist died. Some of the aircraft that were declared damaged beyond economical repair were older 747s that sustained relatively minor damage. Had these planes been newer, repairing them might have been economically viable, although with the 747's increasing obsolescence, this is becoming less common. Some 747s have been involved in accidents resulting in the highest death toll of any civil aviation accident, the highest death toll of any single airplane accident, and the highest death toll of a midair collision. As with most airliner accidents, the root of cause(s) in these incidents involved a confluence of multiple factors that rarely could be ascribed to flaws with the 747's design or its flying characteristics.
Air France has been in operation since 1933. Its aircraft have been involved in a number of major accidents and incidents. The deadliest accident of the airline occurred on June 1, 2009, when Air France Flight 447, an Airbus A330-203, flying from Rio de Janeiro to Paris crashed into the Atlantic Ocean with 228 fatalities. A selected list of the most noteworthy of these events is given below.
British Overseas Airways Corporation (BOAC) was the British state-owned airline created in 1939 by the merger of Imperial Airways and British Airways Ltd. It continued operating overseas services throughout World War II. After the passing of the Civil Aviation Act 1946, European and South American services passed to two further state-owned airlines, British European Airways (BEA) and British South American Airways (BSAA). BOAC absorbed BSAA in 1949, but BEA continued to operate British domestic and European routes for the next quarter century. The Civil Aviation Act 1971 merged BOAC and BEA, effective 31 March 1974, forming today's British Airways.
The Antonov An-12 is a transport aircraft designed and manufactured by the Ukrainian manufacturing and services company Antonov. Given the long operational history of the An-12, more than 190 An-12s have crashed involving many casualties. The An-12 has also been involved in a number of aviation incidents.