Summary
This document proposes to revise Airworthiness Directive (AD) 95-17-09, which requires relocating the left-hand (LH) and right-hand (RH) essential bus current limiters (225 amp) to the battery bus (main bus tie) on certain Fairchild Aircraft SA226 and SA227 series airplanes. The FAA has determined that the applicability of the current AD should be changed to reflect a different serial number range and model designation of certain SA227 series airplanes. The proposed action would retain the essential bus current limiter relocations required by AD 95-17-09, and would revise the Applicability section of that AD. The actions specified by the proposed AD are intended to prevent failure of the LH and RH essential bus when engine failure results in a blown generator current limiter, which could result in loss of airplane electrical power.