An aviation incident, on the other hand, is "an occurrence
other than an accident, associated with the operation of an
aircraft, which affects or could affect the safety of
operations".
Other countries adopt a similar approach, although there
are minor variations, such as to the extent of
aviation-related operations on the ground covered, as well
as with respect to the thresholds beyond which an injury is
considered serious or the damage is considered substantial.
Air supporting mass
Since the birth of flight,
aircraft have crashed, often with serious
consequences. This is due to the unforgiving nature of
flight, where a relatively insubstantial medium, air,
supports a significant mass.
Should this support fail, there is limited opportunity for a
good outcome. Because of this, aircraft design is concerned
with minimising the chance of failure, and pilots are
trained with safety as a primary consideration.
Despite this, accidents still occur, although nowadays
statistically flying is an extremely safe form of
transportation. In fact, the relative rarity of incidents,
coupled with the often dramatic outcome, is one reason why
they still make headlines.
The following is
a look at the 10 deadliest air crashes in history.
1. Tenerife
27 March 1977
Number of people killed: 583
Two Boeing 747s, operated by KLM and Pan Am, collide on
a foggy runway at Tenerife, in Spain's Canary Islands. The
KLM jet departed without permission, striking the Pan Am jet
as it taxied along the same runway. Confusion over
instructions and a blockage of radio transmissions
contributed to the crash.
2. Mount Fuji
12 August 1985
Number of people killed: 520
A Japan Air Lines 747 crashes near Mount Fuji after takeoff
from Tokyo on a domestic flight. The rupture of an aft
bulkhead, which had undergone faulty repairs following a
mishap seven years earlier, caused the destruction of part
of the aeroplane's tail and rendered the jet uncontrollable.
A JAL maintenance supervisor later committed suicide, while
the president of the airline resigned, accepting full
responsibility for the crash and visiting victims' families
to offer a personal apology.
3. Delhi
12 November 1996
Number of people killed: 349
An Ilyushin IL-76 cargo plane from Kazakhstan collides
in midair with a Saudia 747 near Delhi, India. The Kazakh
crew had disobeyed instructions, and neither aircraft was
equipped with collision-avoidance technology.
4. Orly
3 March 1974
Number of people killed: 346
A THY (Turkish Airlines) DC-10 crashes near Orly airport
outside Paris. A poorly designed cargo door burst from its
latches, leading to rapid depressurisation, failure of the
cabin floor and impairment of cables to the rudders and
elevators. Out of control, the plane slammed into woods
northeast of Paris. McDonnell Douglas, maker of the DC-10,
which would see even more controversy later, was forced to
redesign its cargo door system.
5. Ireland
23 June 1985
Number of people killed: 329
A bomb planted by Sikh extremists blows up an Air India
747 en route from Toronto to Bombay. The plane fell into the
sea east of Ireland.
 |
|
The
weather is blamed for about
7% of aviation accidents |
Investigators in Canada cited
shortcomings in baggage screening procedures, screening
equipment, and employee training. A second bomb, intended to
blow up another Air India 747 on the same day, detonated
prematurely in a luggage facility in Tokyo before being
loaded aboard.
6. Riyadh
19 August 1980
Number of people killed: 301
A Saudia L-1011 bound for Karachi returns to Riyadh,
Saudi Arabia, when a fire broke out on board shortly after
takeoff. For reasons never fully understood, the crew delays
evacuation after a safe touchdown and the aircraft rolls to
the far end of the runway before finally stopping. No
evacuation is commenced, and the plane then sits with its
engines running for more than three minutes. Before any
doors can be opened by the inadequately equipped rescue
workers at Riyadh, everyone on the widebody died as the
passenger cabin is killed by a flash-fire.
7. Straits of Hormuz
3 July 1988
Number of people killed: 290
An Airbus A300 operated by Iran Air is shot down over the
Straits of Hormuz by the US navy destroyer Vincennes. The US
military said the crew of the Vincennes were distracted by
an ongoing armed battle and mistook the A300 for a hostile
military aircraft. None of the passengers or crew survived.
8.
Chicago
25 May 1979
Number of people killed: 273
As an American Airlines DC-10 takes off from Chicago's
O'Hare airport, an engine detaches from its
mounting seriously damaging a wing. Before its crew can
react, the aeroplane rolls 90 degrees and disintegrates in a
fireball about a mile beyond the runway. This remains the
worst-ever US crash. Both the engine pylon design and
airline maintenance procedures were faulted by NTSB
investigators, and all DC-10s were temporarily grounded.
9.
Lockerbie
21 December 1988
Number of people killed: 270
Pan American flight 103, explodes in the night sky over
Lockerbie, Scotland, killing all the passengers, and 11
people on the ground. Two Libyan agents are later held
responsible (one is convicted) for planting a bomb aboard
the aircraft.
10.
Sakhalin Island
1 September 1983
Number of people killed: 269
Korean Air Lines flight KL007, a 747, from New York to
Seoul (with a technical stop in Anchorage) is shot down by a
Soviet fighter after drifting off course - and into Soviet
airspace - near Sakhalin Island in the North Pacific. The
International Civil Aviation Organisation (ICAO) later
attributes the mysterious deviation to "a considerable
degree of lack of alertness and attentiveness on the part of
the flight crew."
A statistical breakdown also includes the following:
-
Number of Boeing 747s involved in the 10
crashes: seven
-
Number resulting from terrorist sabotage or that
were shot down mistakenly: four
-
Number that occurred in the US: one
-
Number that occurred prior to 1974: nil
-
Number that occurred during the 1970s or 1980s: nine
-
Number in which pilot error can be cited as a direct
or contributing cause: three
-
Number that crashed as a direct result of mechanical
failure: three
Human error
An accident survey of 2147 aeroplane accidents from 1950
through 2004 determined the causes to be as follows:
37%: Pilot error
33%: Undetermined or missing in the record
13%: Mechanical failure
7%: Weather
5%: Sabotage (bombs, hijackings, shoot-downs)
4%: Other human error (air traffic controller error,
improper loading of aircraft, improper maintenance, fuel
contamination, language miscommunication, etc)
1%: Other cause
The survey excluded military, private, and charter aircraft.
