Dykstra filed papers in U.S. Bankruptcy Court in California yesterday stating that 3 creditors -- Constant Aviation, Classic Interiors and Crystal Air Aviation -- violated a court order and took possession of his Gulfstream jet. It's unclear when the plane was actually taken.
Dykstra -- who names himself as his lawyer -- claims a judge had granted him an "automatic stay" ... which means even though he may be in debt, his property was temporarily off-limits.
Now, he declares in the docs that "the airplane must be returned" ... and he wants an $800,000 check to boot.
So far, Dykstra's creditors -- all three -- aren't talking.
UPDATE: The president of Constant Aviation tells TMZ, "It's not [Lenny's] airplane, I don't know if he is confused. Our dealings with him are over and we are moving past the Lenny Dykstra saga, as I think everyone should."
