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There have been a few comments and questions about how often the FAA grounds entire fleets of aircraft. Here is a summary article of such since 1931.
Groundings of U.S. Commercial Transports Are Rare
Source: Aviation Week & Space Technology
February 04, 2013
1931 The Commerce Department's Aeronautics Branch, the FAA's predecessor, suspends the certificate of the Fokker F-10A after a crash that kills Notre Dame football coach Knute Rockne. Investigators say moisture caused the aircraft's wooden wing to separate.
1946 The CAA grounds the Lockheed L-049 Constellation from July 11 to Aug. 24 so modifications to it's electrical system and powerplants could be made.
1947 The three airlines using DC-6 aircraft voluntarily withdrew them from service after the CAB determined that two inflight fires had been caused by fuel leaking into the cabin heater system through an air intake scoop. After the problem was remedied, the DC-6 returned to service in March 1948.
1948 The Martin 202 is voluntarily grounded after discovery of a structural problem with the wings. After extensive modification they returned to service on Sept. 1, 1950, with the designation 2-0-2A .
See the link above for the rest of the article.
Groundings of U.S. Commercial Transports Are Rare
Source: Aviation Week & Space Technology
February 04, 2013
1931 The Commerce Department's Aeronautics Branch, the FAA's predecessor, suspends the certificate of the Fokker F-10A after a crash that kills Notre Dame football coach Knute Rockne. Investigators say moisture caused the aircraft's wooden wing to separate.
1946 The CAA grounds the Lockheed L-049 Constellation from July 11 to Aug. 24 so modifications to it's electrical system and powerplants could be made.
1947 The three airlines using DC-6 aircraft voluntarily withdrew them from service after the CAB determined that two inflight fires had been caused by fuel leaking into the cabin heater system through an air intake scoop. After the problem was remedied, the DC-6 returned to service in March 1948.
1948 The Martin 202 is voluntarily grounded after discovery of a structural problem with the wings. After extensive modification they returned to service on Sept. 1, 1950, with the designation 2-0-2A .
See the link above for the rest of the article.
