Regulation & law · 02/10/2002Updated: 10/17/2026 · 1 min read

FAA Proposes New Advisory Circular on Continued Airworthiness Assessments for Transport Category Airplanes

The Federal Aviation Administration (FAA) has announced the availability of a proposed Advisory Circular (AC) No. 39.XX, which outlines the continued airworthiness assessments for powerplant and auxiliary power unit installations on transport category airplanes.