Accident | |
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Date | 1 November 2011 |
Summary | Belly landing following hydraulic failure |
Site | Warsaw Chopin Airport, Warsaw, Poland 52°09′56″N20°58′02″E / 52.16556°N 20.96722°E |
Aircraft | |
Aircraft type | Boeing 767-35D(ER) |
Aircraft name | Poznań |
Operator | LOT Polish Airlines |
IATA flight No. | LO16 |
ICAO flight No. | LOT16 |
Call sign | LOT 16 |
Registration | SP-LPC |
Flight origin | Newark Liberty International Airport, Newark, New Jersey, United States |
Destination | Warsaw Chopin Airport, Warsaw, Poland |
Occupants | 231 |
Passengers | 220 |
Crew | 11 |
Fatalities | 0 |
Survivors | 231 |
LOT Polish Airlines Flight 16 was a Boeing 767 (registered SP-LPC) passenger jet on a scheduled service from Newark, United States, to Warsaw, Poland, that on 1 November 2011 made a successful gear-up emergency landing at Warsaw Chopin Airport, after its landing gear failed to extend. All 231 aboard survived without serious injuries. A leak in one of the aircraft's hydraulic systems occurred shortly after takeoff, resulting in the loss of all of the hydraulic fluid supplying the primary landing gear system. [1]
The aircraft involved was a Boeing 767-35DER, registered as SP-LPC, named Poznań , serial number 28656. It was built by Boeing Commercial Airplanes in 1997 and in its 14 years of service, it had logged 85429 airframe hours in 8002 takeoff and landing cycles. The aircraft was powered by two General Electric CF6-80C2B6 engines. [2] [3] : 17
LOT Polish Airlines Flight 16 was scheduled to arrive at Warsaw Chopin Airport from Newark Liberty International Airport on 1 November 2011 at 13:35 CET with 220 passengers and 11 crew on board. [4]
Within 30 minutes of departing from Newark, the crew received a warning that the center hydraulic system had malfunctioned. [5] The decision was made to continue to Warsaw in order to use up the heavy load of fuel needed for the transatlantic flight. [6] The aircraft proceeded to approach as normal, but aborted when the landing gear failed to deploy. [7]
The crew informed Warsaw air traffic control (ATC) that they were unable to lower the landing gear due to a hydraulic system failure. The captain decided to circle the airport for over an hour, to consume excess fuel and to allow time for ground emergency services to prepare for the landing, including covering the runway with a fire suppression foam. [8] Visual observation by two Polish Air Force F-16 fighter jets verified that none of the landing gear were down; attempts to lower the landing gear by alternative means failed. [9] [10]
The airport was evacuated for the arrival of the aircraft, and roads around the airport were closed to accommodate emergency services. Other flights which were due into Warsaw were diverted or returned to their point of departure. [10]
At 14:40 CET the crew made a successful gear-up landing on Runway 33, with no injuries to anyone. The aircraft however, sustained substantial damage, resulting in a hull loss. All of those on board were evacuated within 90 seconds. [11]
The airport remained closed to traffic until 16:00 CET, 3 November 2011, to enable removal of crash debris and then a final inspection of runways and aprons. [12]
Shortly after the evacuation, a team from the Polish State Commission on Aircraft Accidents Investigation (SCAAI) discovered that the C829 circuit breaker, which protects a number of systems including the alternate landing gear extension system, was "popped", or opened, interrupting the circuit. The C4248 breaker for the alternate landing gear system remained closed.
After the plane was lifted off the runway, the C829 circuit breaker was closed, and the landing gear was extended using the alternate system. The plane was then towed to the LOT maintenance hangar [13] for further investigation. [14] [15]
Flight 16 was captained by Tadeusz Wrona, a 57-year-old veteran pilot with twenty years of Boeing 767 experience. Both the captain and the 51-year-old first officer, Jerzy Szwarc, held Airline Transport Pilot Licenses with a combined total of over 25,000 flying hours, including 15,000 hours on the Boeing 767. This accident gave rise to a new saying (Wrona in Polish means crow): "Leć jak Orzeł, ląduj jak Wrona" (Fly like an eagle, land like a crow) [16] [13]
The preliminary report by the SCAAI found that a hydraulic leak occurred shortly after takeoff, after the landing gear and flaps were retracted. [17] The leak was caused by excessive bending of a flexible hose in the center hydraulic system, resulting in the loss of all fluid in that system. The drop in pressure was indicated by the EICAS and recorded by the flight data recorder. [13] [18] Later investigation indicated a popped circuit breaker just to the right of the F/O at floor level would have enabled the electric motor for releasing the undercarriage. The breaker was reset after landing and the undercarriage extended normally. [11]
The final report of the accident was released in 2017. The causes of the accident were the center hydraulic hose leak, the C829 circuit breaker popping, and the flight crew's failure to detect the C829 breaker during the approach, which could have allowed them to lower the landing gear. Contributing factors were the lack of safeguards to prevent accidental opening of circuit breakers, the C829 circuit breaker being in a low position where the flight crew would have difficulty noticing its condition, LOT's operations center inadequate procedures, and LOT's failure to incorporate a Boeing service bulletin on the prevention of excessive bending in the hydraulic system hose. [19]
Polish President Bronisław Komorowski praised and thanked the crew for the successful landing. [20] The Boeing 767, registration SP-LPC, was extensively damaged and LOT deemed the aircraft a hull loss. [21] The accident represents the 14th hull loss of a Boeing 767. [22] In November 2013, two years after the incident, the aircraft was scrapped.[ citation needed ]
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LOT Polish Airlines, legally incorporated as Polskie Linie Lotnicze LOT S.A., is the flag carrier of Poland. It is a founding member of IATA and remains one of the world's oldest airlines in operation. With a fleet of 80 aircraft as of August 2024, LOT Polish Airlines is the 18th largest operator in Europe, serving 105 domestic and international destinations across Europe, Asia and North America. The airline was founded on 29 December 1928 by the Polish government during the Second Polish Republic as a self-governing limited liability corporation, taking over existing domestic airlines Aerolot and Aero, and began operations on 1 January 1929.
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An aviation accident is an event during aircraft operation that causes serious injury, death, or destruction. An aviation incident is any operating event that compromises safety but does not progress to an aviation accident. Preventing accidents and incidents is the main goal of aviation safety.
United Airlines Flight 232 was a regularly scheduled United Airlines flight from Stapleton International Airport in Denver to O'Hare International Airport in Chicago, continuing to Philadelphia International Airport. On July 19, 1989, the DC-10 serving the flight crash-landed at Sioux Gateway Airport in Sioux City, Iowa, after suffering a catastrophic failure of its tail-mounted engine due to an unnoticed manufacturing defect in the engine's fan disk, which resulted in the loss of all flight controls. Of the 296 passengers and crew on board, 112 died during the accident, while 184 people survived. Thirteen of the passengers were uninjured. It was the deadliest single-aircraft accident in the history of United Airlines.
Warsaw Chopin Airport is an international airport in the Włochy district of Warsaw, Poland. It is the busiest airport in Poland and the 31st busiest airport in Europe with 18.5 million passengers in 2023, handling approximately 40% of the country's total air passenger traffic. The airport is a central hub for LOT Polish Airlines as well as a base for Enter Air and Wizz Air.
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An emergency landing is a premature landing made by an aircraft in response to an emergency involving an imminent or ongoing threat to the safety and operation of the aircraft, or involving a sudden need for a passenger or crew on board to terminate the flight. It typically involves a forced diversion to the nearest or most suitable airport or airbase, or an off airport landing or ditching if the flight cannot reach an airfield. Flights under air traffic control will be given priority over all other aircraft operations upon the declaration of the emergency.
A belly landing or gear-up landing occurs when an aircraft lands without its landing gear fully extended and uses its underside, or belly, as its primary landing device. Normally the term gear-up landing refers to incidents in which the pilot forgets to extend the landing gear, while belly landing refers to incidents where a mechanical malfunction prevents the pilot from extending the landing gear.
A foam path is the now-discouraged aviation safety practice of spreading a layer of fire suppression foam on an airport runway prior to an emergency landing. Originally, it was thought this would prevent fires, but the practice is no longer recommended.
TWA Flight 841 was a scheduled passenger flight from John F. Kennedy International Airport, New York City, en route to Minneapolis-Saint Paul International Airport in Minneapolis, Minnesota. On April 4, 1979, at 9:47 p.m. Eastern Standard Time, while flying over Saginaw, Michigan, the Boeing 727-31 airliner began a sharp, uncommanded roll to the right, and subsequently went into a spiral dive. The pilots were able to regain control of the aircraft and made an emergency landing at Detroit Metropolitan Airport.
LOT Polish Airlines Flight 007 was an Ilyushin Il-62 that crashed near Okęcie Airport in Warsaw, Poland, on 14 March 1980, as the crew aborted a landing and attempted to go-around. All 87 crew and passengers died. It was caused by the disintegration of one of the turbine discs in one of the plane's engines, leading to uncontained engine failure. The turbine disc was later found to have manufacturing faults.
LOT Polish Airlines Flight 5055 was a scheduled international passenger flight from Warsaw to New York City. In the late-morning hours of 9 May 1987, the Ilyushin Il-62M operating the flight crashed in the Kabaty Woods nature reserve on the outskirts of Warsaw around 56 minutes after departure. All 183 passengers and crew on board were killed in the crash, making it the deadliest accident involving an Ilyushin Il-62, and the deadliest aviation disaster in Polish history.
Tadeusz Wrona is a Polish pilot (1984–2019) who successfully performed a belly landing of LOT Polish Airlines Flight 16, a Boeing 767 at Chopin Airport in Warsaw on November 1, 2011. None of the 231 passengers and crew were injured.
In aeronautics, loss of control (LOC) is the unintended departure of an aircraft from controlled flight and is a significant factor in several aviation accidents worldwide. In 2015 it was the leading cause of general aviation accidents. Loss of control may be the result of mechanical failure, external disturbances, aircraft upset conditions, or inappropriate crew actions or responses.
External media | |
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Images | |
"Photograph of aircraft coming to rest". Aircraft-spotting.org. 1 November 2011. Retrieved 4 November 2011. | |
Airliners.net photo | |
Video | |
OKĘCIE LĄDOWANIE AWARYJNE POLISH AIRLINES LOT BOEING 767 EMERGENCY LANDING WARSAW (in Polish). | |
Boeing 767 Newark-Warsaw Okecie LOT accident landing 01.11.11 (in Polish). 1 November 2011. |