What happened
On October 30, 2021, an Aerostar 601-P, registration LV-OAR, was operating a general aviation flight from Tecnodesierto to Catamarca Airport. During the approach to runway 02, the aircraft encountered moderate to strong turbulence caused by isolated convective cells and nearby precipitation.
As the pilot attempted to execute the landing, the turbulence caused the pilot's checklist to slip from his hands, preventing the completion of the landing procedure. Consequently, the aircraft approached the runway with the landing gear retracted and flaps set to 40 degrees. The aircraft made abnormal contact with the runway, resulting in the propellers striking the pavement and the fuselage sustaining significant damage. There were no injuries to the pilot.
The investigation
The investigation examined the meteorological conditions, the aircraft's mechanical state, and the pilot's flight procedures. Meteorological reports confirmed the presence of cumulonimbus clouds and precipitation near the approach path.
Technical inspections of the aircraft's landing gear alarm system, including both audible and visual indicators, were conducted at a maintenance facility. These tests confirmed that the gear configuration alarms and position lights were functioning correctly. Regarding the pilot's report of a faulty flap indicator, investigators determined the issue was caused by a broken indicator mechanism on the left wing, which did not affect the actual flap deployment.
Findings
- Convective activity and nearby precipitation generated turbulence along the approach path.
- The pilot did not complete the reading of the landing checklist due to the turbulence.
- The pilot's attention was diverted by the turbulence, leading to a state of channeled attention.
- The approach to the traffic pattern did not comply with standard regulations for uncontrolled aerodromes.
- The landing gear was not extended prior to touchdown.
- The aircraft's landing gear warning systems and position indicators were fully operational.