The terms of the arrangement also provide for a reserve aircraft.
Her term also saw the journal increase to 8 issues a year and provide online access to its members.
The terms would also provide significant protection for lower paid civil servants.
The terms of the new agreement provided for a new 60-year concession.
"The terms of the settlement provide for fair and adequate compensation," he said last February.
The terms also provided for consultation on any proposed Balkan operations.
But the company says staggered terms provide "continuity and stability."
The unusual terms may provide a way to avoid enforcement problems.
In the distant future, the third term may provide a source of additional Mach effects.
The terms call for an immediate 10 percent reduction in wages but provide other, gradual raises.