Summary
This action withdraws a notice of proposed rulemaking (NPRM) that proposed a new airworthiness directive (AD) for Marathon Power Technologies Company (Marathon) batteries. That action would have required visually inspecting screws installed on Marathon batteries and replacing certain unairworthy screws. Since issuing the NPRM, the FAA has reconsidered the proposal and determined that an AD is not the appropriate avenue for addressing individual cases of improper maintenance or lack of maintenance that prompted the proposal. Accordingly, the proposed rule is withdrawn.