What happened
On October 12, 2014, at approximately 8:25 p.m., a British Aerospace Jetstream 31, registration HI-816, was completing a commercial flight from San Juan, Puerto Rico, to Punta Cana, Dominican Republic. After landing on runway 08 at Punta Cana International Airport, the aircraft experienced a sudden leftward yaw. The aircraft traveled approximately 1,500 feet into the safety area before striking a tree at the edge of the zone.
The impact caused the left wing and its fuel tank to rupture, triggering a fire that affected the left side of the aircraft. Following the collision with the tree, the aircraft spun nearly 180 degrees, causing the landing gear to collapse and the lower fuselage to strike rocky terrain. While the crew and most passengers escaped without injury, two passengers sustained minor injuries during the evacuation.
The investigation
The CIAA investigation focused on the mechanical state of the engines and the pilot's actions during the landing phase. Investigators examined the propeller blades, noting that three blades on the number two (right) engine were in the feathered position, while the fourth was rotated 180 degrees. Analysis of the number two engine revealed an oil leak at the propeller governor head connection, which had caused a loss of oil pressure during the flight.
Additionally, the investigation found that the cockpit voice recorder (CVR) was unusable due to advanced tape deterioration. The aircraft was also found to be operating without a flight data recorder (FDR), which is a mandatory requirement for this type of operation under local regulations.
Findings
- The pilot observed fluctuating oil pressure on the number two engine during the final approach.
- The pilot applied reverse thrust to both engines immediately upon landing without waiting for the Beta light indication, which is essential to ensure proper engine function.
- Only the number one (left) engine responded to the reverse thrust command, causing the aircraft to veer sharply to the left and exit the runway.
- A mechanical failure in the number two engine, specifically an oil leak at the propeller governor, contributed to the engine's performance issues.