Private Pilot Private Exam

What should an aircraft owner or operator know about Airworthiness Directives (AD's)?

1. They are optional

2. They are advisory only

3. They are mandatory

4. They can be ignored if not relevant

The correct answer is: They are mandatory

Airworthiness Directives (ADs) are legally enforceable regulations issued by the Federal Aviation Administration (FAA) or other aviation authorities. They provide instructions that are mandatory for aircraft owners and operators to comply with in order to ensure the continued airworthiness and safety of the aircraft. Thousands of ADs are published each year to address specific safety concerns that may arise from defects or issues found in aircraft, engines, propellers, or parts. Compliance with ADs typically includes mandatory inspections, modifications, or repairs that must be conducted within specified timeframes. Failing to comply with an applicable AD can result in the aircraft being considered unairworthy, potentially leading to penalties or accidents. Therefore, understanding that ADs are mandatory is crucial for maintaining the safety and legality of aircraft operations. While some directives might seem advisory in context, their enforcement means that they carry legal weight and must be adhered to unless otherwise specified. Ignoring ADs or deciding not to act on them under the assumption that they are optional or advisory poses significant risks, both for aircraft safety and for legal liability.