What was found
ABOUT 75 MILES FROM DESTINATION, WHILE IN A STABILIZED DECENT OF 2000 FPM FROM FLIGHT LEVEL 400 TO FLIGHT LEVEL 220 (AROUND FLIGHT LEVEL 220) FLIGHT CREW HEARD A LOUD BANG. THERE WAS NO CHANGE IN FLIGHT COORDINATION OF THE ACFT, NO CHANGE IN ANY INDICATION, OR CHANGES IN PERCEIVED LIFT OR DRAG. FLIGHT WAS COMPLETED WITHOUT FURTHER EVENT. AFTER LANDING IT WAS IDENTIFIED THAT THE DRAG PARACHUTE AND DRAG PARACHUTE COMPARTMENT LID WAS MISSING FROM THE ACFT. ALSO A DENT WAS IDENTIFIED IN THE LOWER VENTRAL FIN.