Special Conditions: Textron Aviation Inc. (Textron) Model MU-300-10, 400, 400A Airplanes; Rechargeable Lithium Batteries and Battery System Installations

What is a Special Condition?

When an aircraft design includes a novel feature not addressed by the existing 14 CFR airworthiness standards, the FAA imposes Special Conditions — additional requirements specific to that design. They're project-specific, not type-applicable.