EASA SIB SN-2026-005: Autopilots and Trim Runaways in General Aviation Aircraft

What to do

Owners, operators, and maintenance organisations should review their aircraft systems to ensure compliance with manufacturer data and maintenance programmes, rectify defects promptly, or deactivate faulty systems. Pilots must complete differences or familiarisation training and conduct thorough pre-flight checks, including system serviceability and emergency procedures. Immediate actions during trim runaway events should be memorised and practiced regularly. Any malfunctions must be reported through Mandatory Occurrence Reports.

Summary

The Civil Aviation Authority Safety Notice SN–2026/005 Version 2 is a guidance document addressing autopilots and electric pitch trim runaways in General Aviation aircraft. It applies to all General Aviation pilots, operators, and organisations managing or maintaining GA aircraft equipped with autopilot or electric pitch trim systems. The notice highlights the importance of system checks, pilot training, and immediate actions in case of trim runaway events to enhance flight safety.

What changed

This version 2 of Safety Notice SN–2026/005 extends the original notice by including additional guidance for organisations managing and maintaining General Aviation aircraft. It clarifies pre-flight checks, immediate actions during trim runaway events, and reinforces training and reporting requirements based on recent accident reports and occurrence data.

Why it matters

This notice is critical for aviation professionals as it addresses the risks associated with autopilot and electric pitch trim system failures, which can lead to significant pitch excursions and loss of control. Operators and maintenance organisations must ensure proper system configuration, maintenance, and pilot preparedness to mitigate these risks. Compliance improves safety and reduces the likelihood of accidents related to trim runaway events.