NTSB Issues Recommendation A-17-035 to FAA Regarding TAWS Protections for Single-Engine Aircraft

The National Transportation Safety Board (NTSB) has issued Recommendation A-17-035, designated under reference number ANC15MA041, addressed directly to the Federal Aviation Administration. This directive urges the agency to develop and implement effective methods for providing terrain awareness and warning system protections. The recommendation specifically targets single-engine airplanes operated under 14 Code of Federal Regulations Part 135. These aircraft frequently operate at altitudes that fall below their respective TAWS class design alerting thresholds, which can lead to nuisance alerts. The NTSB emphasizes the need for solutions that maintain safety standards while reducing unnecessary warnings in this operational context.