Aviation Links Federal Aviation Administration The Federal Aviation Administration's safety programs, offices, and policy Sunrise/Sunset US Naval Observatory site - sunrise, sunset, moonrise, moonset, and the beginning and end of civil twilight American Helicopter Services and Aerial Firefighting Association The American Helicopter Services and Aerial Firefighting Association (AHSAFA) is a nonprofit trade association organized for the purpose of promoting and advancing the common interest and welfare of companies engaged in forest and wildland firefighting and other aerial activities. GSA - Aviation Management Automated Flight Following Landings - Numerous aviation databases and flight planning tools Aviation Safety Interagency Aviation Mishap Response Guide & Checklist For use by both the DOI-AM Aviation Safety Manager and the USDA-FS National Aviation Safety and Training Manager. National Transportation Safety Board - Aviation