14 C.F.R. § 121.354
(b) Airplanes manufactured on or before March 29, 2002. No person may operate a turbine-powered airplane after March 29, 2005, unless that airplane is equipped with an approved terrain awareness and warning system that meets the requirements for Class A equipment in Technical Standard Order (TSO)-C151. The airplane must also include an approved terrain situational awareness display.
(Approved by the Office of Management and Budget under control number 2120-0631)
(c) Airplane Flight Manual. The Airplane Flight Manual shall contain appropriate procedures for—
[Docket 29312, 65 FR 16755, Mar. 29, 2000]