Waiver
Section 04: Certification Process Mechanics
Definition
A formal authorization to accept a specific deviation from a requirement without requiring the normal corrective action. In the production context, a waiver allows a manufactured article that does not conform to the approved type design in a specific respect to be accepted for use, provided the deviation has been engineering-evaluated and determined to have no adverse effect on airworthiness. In the regulatory context, a waiver is similar to an exemption and provides relief from a specific operational requirement, typically with compensating conditions or limitations.
Primary Sources
14 CFR Part 91, § 91.903-91.905, WaiversFAA
FAA provisions for operational waivers from certain flight rules.