What happened
During a local parachute jump operation departing from runway 30 at the Lillo (Toledo) Aerodrome, an aircraft carrying the pilot and ten skydivers experienced a sudden mid-air incident. The group included six instructor-student pairs prepared for tandem jumps. While cruising at an altitude of roughly 14,000 feet, the aircraft emitted the acoustic signal notifying jumpers that the jump was two minutes away. Immediately following this signal, the plane underwent a sudden, intense negative acceleration that forced two passengers toward the aircraft ceiling.
Once the aircraft stabilized its attitude, the left wing suffered a structural fracture and separated from the fuselage. This loss of structural integrity caused the aircraft to descend rapidly toward the earth. During the descent, nine of the skydivers were ejected from the plane; they successfully deployed their parachutes and landed safely. The aircraft continued its descent until it struck the ground 4.5 km north of the aerodrome, where it ignited. The resulting fire consumed the section of the plane from the firewall to the rear of the passenger cabin.
Findings
Upon impact, the pilot and one parachutist were unable to escape the wreckage and both died. Debris from the accident, including the detached left wing, various control surfaces, and portions of the horizontal stabilizer, was discovered scattered between 1.5 km and 2.5 km northeast of the primary impact zone. The investigation points to a sudden negative acceleration causing the left wing to fracture and detach as the primary sequence leading to the crash.