An Extended Handheld Download Unit (EHHDLU for short) 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.
All test units are produced consistent with tight customer specifications, and are rigorously tested to ensure full functionality prior to shipment.
These kits are produced and shipped both domestically and globally to support fleets wherever they operate to help minimize downtime, maintain compliance, and keep aircraft in service. Ball Systems works with this customer regularly, with 100’s of unique GSE part numbers to support a wide array of aircraft subsystems.

