What happened
On June 8, 2019, at approximately 20:25 UTC, an experimental RV-10, registration PR-ZLB, was performing a private flight from Pontal, SP, to Cascavel, PR. The aircraft was carrying one pilot and three passengers.
During the approach to the Aeródromo Aeroleve (SILQ), the pilot was unable to establish a stabilized final approach. After performing a go-around over the runway, the pilot initiated a 180-degree left turn to land on the opposite runway. During this maneuver, the engine suffered a loss of power. Due to the low altitude, the pilot was unable to complete standard emergency procedures and could only manage to shut off the engine before performing an emergency landing in a cornfield. The aircraft sustained substantial damage, but all four occupants escaped without injury.
The investigation
CENIPA's investigation confirmed that the pilot was properly licensed and held a valid medical certificate. The aircraft held a valid Flight Authorization Certificate (CAV) and a valid Annual Maintenance Inspection Report (RIAM). However, several documentation discrepancies were noted: the aircraft lacked a flight logbook, and maintenance records in the airframe logbook did not provide sufficient detail to verify a formal maintenance program. Additionally, the Lycoming YIO540-D4A5 engine lacked certification of design, production, or airworthiness from a civil aviation authority.
Investigators also noted that the aircraft's weight and balance could not be verified because the empty weight information was unavailable. At the time of the power loss, the aircraft had 37 liters of fuel remaining, which was consistent with expected consumption for the flight legs performed.
Findings
- The pilot was qualified and experienced in the aircraft type.
- Meteorological conditions were favorable for flight.
- The aircraft was unable to maintain a stabilized approach, leading to a go-around and subsequent turn.
- Inadequate fuel management is the most probable cause of the engine power loss.
Safety action
It is recommended that the National Civil Aviation Agency (ANAC) disseminate the lessons learned from this investigation to alert operators, particularly those of experimental aircraft, regarding the risks associated with improper fuel management.