An EHHDLU kit is a mission-critical flight support solution designed to help aircraft operators quickly diagnose, service, and recover systems during unscheduled events. Each kit integrates specialized tools and an aircraft-specific interface device supplied by the avionics manufacturer, enabling reliable access to onboard data when it matters most.

These kits are produced and shipped both domestically and globally to support fleets wherever they operate—helping minimize downtime, maintain compliance, and keep aircraft in service.