Which medical condition is not typically associated with a Statement of Demonstrated Ability?

A Statement of Demonstrated Ability (SODA) is utilized within aviation medical certification to address specific situations where an individual's medical condition may not meet the standard but is deemed manageable or stable under certain conditions. The purpose of a SODA is to facilitate the certification process for individuals who have certain impairments but can demonstrate the ability to operate an aircraft safely.

Severe progressive diseases are generally not associated with a SODA because they are inherently unstable and likely to worsen over time. This type of condition can significantly impair a person's ability to perform the numerous tasks required of a pilot, such as quick decision-making, physical coordination, and cognitive processing. The nature of progressive diseases often means there is a continual decline in health and functional capabilities, making it challenging to assure safety in the aviation environment.

In contrast, static or nonprogressive conditions, non-worsening chronic conditions, and temporary impairments can often be addressed with a SODA. These conditions are typically stable, allowing individuals to demonstrate their ability to operate an aircraft safely despite their medical issues. Understanding the nature of the condition is critical in the context of aviation safety and medical certification.