Summary
This action withdraws a notice of proposed rulemaking (NPRM) that proposed a new airworthiness directive (AD), applicable to certain British Aerospace Jetstream Model 4101 airplanes. That action would have required revising the Airplane Flight Manual (AFM) to include requirements for activation of the airframe pneumatic deicing boots. Since the issuance of the NPRM, the Federal Aviation Administration (FAA) has received new data that indicates that the specified AFM revision is not necessary. Accordingly, the proposed rule is withdrawn.