SEPT. 11, 2007

FCC approves order requiring Sprint Nextel to vacate 800 MHz channels on June 26, 2008.

NOV. 8, 2007

Sprint Nextel appeals June 26 provision in a federal appeals court.

NOV. 27, 2007

Appeals court grants expedited review of case.

FEB. 4, 2008

Final briefs due to appeals court, preparing the case for oral arguments.

MARCH 18, 2008

Oral arguments to be heard in the case.

TBD

Appeals court to render a decision.

JUNE 26, 2008

Sprint must vacate 800 MHz frequencies unless the FCC grants a waiver, which is not an option for interleaved spectrum.

Sources: FCC, Sprint Nextel