CESSNA 310L — Service Bulletins

This document is an AAIB (Air Accidents Investigation Branch) Bulletin detailing an incident involving a Cessna 310L aircraft, registration G-AZUY. The bulletin outlines the circumstances of the flight, the malfunction of the landing gear system, and the subsequent investigation findings. The incident occurred on September 29, 2003, when the pilot experienced issues with the landing gear not locking down properly during the approach for landing. The report provides insights into the mechanical failure that led to the collapse of the main landing gear upon touchdown, as well as recommendations for maintenance and operational procedures to prevent similar occurrences in the future.

• The incident involved a Cessna 310L, registration G-AZUY, with a landing gear failure during approach.
• The landing gear system is electrically powered and mechanically actuated, with a hand crank for emergency use.
• The investigation identified stuck relays in the actuator motor circuit as a critical failure point.