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32 ACRONYMS AirNav Airport information websiteâhttp://www.airnav.com/airports/ AOPA Aircraft Owners and Pilots Association APA Arizona Pilots Association BLM Bureau of Land Management FBI Federal Bureau of Investigation FLPMA Federal Land and Policy Management Act USFS United States Forest Service GA General aviation IAA Idaho Aviation Association IAF Idaho Aviation Foundation IAN Idaho Airstrip Network OPA Oregon Pilots Association NOTAM Notice to Airmen RAF Recreational Aviation Foundation RUS Recreational Use Statutes SAR Search and Rescue UBCPA Utah Backcountry Pilots Association WSA Wilderness Study Area