Definition
A medical condition in which a person has shown one or more of the following within the previous two years: increased tolerance to a substance, withdrawal symptoms when not using it, impaired control over use, or continued use despite damage to physical health, mental health, or social functioning. Under FAA medical standards, a history of substance dependence is disqualifying for any class of airman medical certificate unless the applicant meets specific recovery criteria.
Plain English
A medical finding that a person's body or behavior has come to rely on a drug or alcohol in a way that causes harm or loss of control. The FAA treats this as a serious condition that blocks medical certification until recovery requirements are met.
Context Anchor
Seen when applying for or renewing an FAA medical certificate, especially in questions about medical history, alcohol use, or drug use.
Derivation
From Latin 'dependere', meaning 'to hang from'. The idea is that the person's normal functioning hangs from, or relies on, the substance. That helps explain why the FAA treats it as a structural medical issue rather than a willpower issue.
Why Pilots Care
A history or current diagnosis of substance dependence is disqualifying for an FAA medical certificate until the applicant demonstrates sustained recovery and meets special issuance requirements.
Grounding Statement
For FAA medical certification, the key issue is whether alcohol or drug use has become something the person cannot reliably control.
Intuition Check
Do not read substance dependence as simply having used a substance before. In this FAA medical context, it means a pattern of reliance, loss of control, withdrawal, tolerance, or continued use despite harm.
Example Sentence 1
The applicant disclosed a history of substance dependence and was required to provide recovery documentation before the FAA would consider issuing a medical certificate.
Example Sentence 2
After three years of documented sobriety and counseling, the pilot applied for a special issuance medical certificate following treatment for substance dependence.