THE AEROBATIC QUALIFIED PILOT WAS PRACTICING A CUBAN 8 TYPE OF
MANEUVER. ACCORDING TO A WITNESS, THE MANEUVER WAS PERFORMED IN A
REVERSE MANNER. WHEN THE PILOT PREVIOUSLY PERFORMED THE MANEUVER, HE
ALLOWED THE AIRCRAFT TO CLIMB (SUFFICIENTLY) BEFORE MAKING A 180 DEG
ROLL & GOING DOWN THE BACK SIDE OF THE MANEUVER. HOWEVER, JUST
BEFORE THE ACDNT, AFTER COMPLETING THE FRONT SIDE OF THE MANEUVER, THE
ACFT WAS IMMEDIATELY ROLLED 180 DEG WITHOUT CLIMBING (SUFFICIENTLY).
SUBSEQUENTLY, DURING RECOVERY FROM THE DESCENT ON THE BACK SIDE OF THE
MANEUVER, THE ACFT MUSHED INTO THE GROUND & CRASHED IN A WINGS
LEVEL ATTITUDE.