| Aircraft Owners and Pilots Association (AOPA) | www.aopa.org |
| Federal Aviation Association (FAA) | www.faa.gov |
| Flight Aware | www.flightaware.com |
| Helicopter Association International | www.rotor.com |
| International Air Transportation Association | www.iata.org |
| National Aircraft Resale Association (NARA) | www.nara-dealers.com |
| National Business Aviation Association (NBAA) | www.nbaa.org |
| National Transportation Safety Board (NTSB) | www.ntsbbar.org |
| National Aircraft Finance Association (NAFA) | www.nafa.aero |
| Professional Aircraft Lenders Association (PALA) | www.pala.aero |
| National Air Transportation Association (NATA) | www.nata.aero |
| International Civil Aviation Organization | www.icao.int |
| HangarConditions.com | www.hangarconditions.com |
| DTC Weather and Flight Planning Services | www.duat.com |
| AirNav, LLC | www.airnav.com |
| Angel Flight | www.angelflight.com |
| US Department of Transportation | www.dot.gov |
| The Air Care Alliance | www.aircareall.org |
