Airworthiness Directives; Aerospace Lighting Corporation Power Units and Power Supplies

Riepilogo

This document proposes the supersedure of an existing airworthiness directive (AD), applicable to certain Aerospace Lighting Corporation (ALC) lamp connectors and fluorescent lamps, that currently requires an inspection, and adjustment or replacement of improperly installed, damaged, or improperly configured lamp connectors and fluorescent lamps used in cabin fluorescent lighting systems. This action would add an optional replacement of certain power units and power supplies with improved design parts as terminating action to the repetitive inspections. This proposal is prompted by the availability of improved design components. The actions specified by the proposed AD are intended to prevent smoke, fire, electrical shock, and possible electromagnetic interference caused by high voltage arcing in the cabin which, if undetected, could result in personal hazard or loss of the aircraft.