Summary
This action withdraws a notice of proposed rulemaking (NPRM) that proposed a new airworthiness directive (AD), applicable to all Dornier Model 328-100 series airplanes. That action would have required replacement of the Anti-Skid Control Unit (ASCU) of the aircraft braking system with an improved unit. Since the issuance of the NPRM, the manufacturer has advised the Federal Aviation Administration (FAA) that the entire Model 328-100 fleet has been retrofitted with the improved ASCU, and all ASCU spares have been modified or otherwise removed from service. Accordingly, the proposed rule is withdrawn.