What happened
On November 15, 2019, during a flight involving a Saab 3able 340A, registered as SP-KPU, a malfunction occurred involving the aircraft's standby artificial horizon. The failure took place while the aircraft was operating between ENAL and EKCH. The malfunction of the standby instrument did not impact the continued safe operation of the flight.
The investigation
The investigation focused on determining the nature of the instrument failure and the factors that led to the malfunction of the standby horizon.
Findings
- The primary cause of the failure was the wear and tear of the instrument.
- Contributing factors included the long period of service and the extensive operational hours accumulated by the device.