Summary
The FAA proposes to adopt a new airworthiness directive (AD) for certain Boeing Model 757 series airplanes. This proposed AD would require identification of the part number for the cable assembly for the lower anti-collision light, and related investigative/corrective actions if necessary. This proposed AD is prompted by a report of damage caused by an electrical arc in a connector on the cable assembly for the lower anti-collision light. We are proposing this AD to prevent an electrical arc in the cable assembly for the lower anti-collision light, which could result in a fire in a flammable leakage zone of the airplane.