giovedì 19 novembre 2020

Storia, breve elenco di flotte civili/commerciali messe a terra

Se l'ultimo caso ha riguardato il Boeing 737-8/900 MAX, ecco le altre! Il sito Aviation Safety Network della Flight Safety Foundation ha fornito il seguente elenco:

On March 13, 2019, all Boeing 737 MAX aircraft were temporarily grounded worldwide by relevant authorities and airlines. The MAX was not the first aircraft in aviation history to be grounded globally.

2019: Boeing 737 MAX

First aircraft in service: 2017
Grounding in effect: March 13, 2019 (some airlines and countries on March 11 and 12)
Regulatory actionFAA Emergency Order (other countries took own regulatory actions)
Grounding lifted: November 18, 2020 (by FAA)
Reason for grounding: Fatal accidents involving Lion Air 601 and Ethiopian 302

2013: Boeing 787 Dreamliner

First aircraft in service: 2009
Grounding in effect: January 16, 2013
Regulatory actionEmergency AD
Grounding lifted: April 19, 2013
Reason for grounding: Two lithium ion battery failures on January 7 and January 16.

2000: Concorde

First aircraft in service: 1976
Grounding in effect: August 16, 2000
Regulatory action: Withdrawal of the Airworthiness Certificates of all Concordes
Grounding lifted: November 2001
Reason for grounding: Doubts about the fuel tank safety following the crash of Air France flight 4590.

1982: Yakovlev Yak-42

First aircraft in service: 1980
Grounding in effect: 1982
Regulatory action: unknown
Grounding lifted: October 1984
Reason for grounding: Design fault which caused horizontal stabiliser screw jack mechanism to fail on a Yak-42 on June 28, 1982, killing 132.

1979: McDonnell Douglas DC-10

First aircraft in service: 1971
Grounding in effect: June 6, 1979
Regulatory actionEmergency Order, suspending the Type Certificate
Grounding lifted: July 13, 1979 (June 19 for European airlines)
Reason for grounding: Doubt about the engine pylon assembly not meeting certification criteria following the crash of American Airlines flight 191 .

1954: de Havilland Comet

First aircraft in service: 1952
Grounding in effect: April 1954
Regulatory action: Airworthiness Certificate was revoked
Grounding lifted: 30 September 1958
Reason for grounding: Two in-flight break up accidents involving BOAC Flight 781 and South African Airways Flight 201.

1947: Douglas DC-6

First aircraft in service: 1947
Grounding in effect: November 11, 1947
Regulatory action:  Voluntary grounding by airlines
Grounding lifted: after four months
Reason for grounding: Grounding following a series of inflight fires including the fatal crash of United Airlines Flight 608 on Oct 24, 1947

1946: Lockheed Constellation

First aircraft in service: 1945
Grounding in effect: July 12, 1946
Regulatory action: Government Order
Grounding lifted: August 23, 1946
Reason for grounding: Grounding following fatal in-flight fire accident of TWA Flight 513 on July 11, 1946


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