Remember last fall when the CEOs of General Motors, Ford and Chrysler flew on corporate jets  to Washington, D.C., to plead for a taxpayer bailout? The resulting bad publicity prompted GM to try to prevent the public  from tracking its planes in databases compiled by the Federal Aviation Administration.
That got ProPublica interested in how many other companies had asked the FAA to excise their planes' tail numbers from records tracking private flights. So in December, ProPublica filed a request under the Freedom of Information Act for a complete listing.
Earlier this month, the FAA concluded that the information was public and planned to release the list on Tuesday. But on Monday, an organization representing corporate jet users went to court to block the release of the records.