| A | B |
|---|
| Terminal Aerodrome Forecast (TAF) | Weather report established for the five statute mile radius around an airport and usually provided for larger airports. Valid for up to a 30-hour time period and updated four times a day |
| Title 14 of the Code of Federal Regulations Part 107 | Lays out the operating and certification requirements to allow Small Unmanned Aircraft Systems (sUAS) to operate for non-hobby and non-recreational purposes |
| Small Unmanned Aircraft Systems Airman Certification Standards | Federal Aviation Administration (FAA) document that communicates the aeronautical knowledge standards for a Remote Pilot Certificate with an sUAS rating. The FAA views the ACS as the foundation to an integrated and systematic approach to airman certification. |
| Unmanned Aircraft | An aircraft operated without the possibility of direct human intervention from within or on the aircraft. The difference between an Unmanned Aircraft and a Small Unmanned Aircraft is that a Small Unmanned Aircraft weighs less than 55 pounds |
| Visibility | Greatest horizontal distance at which prominent objects can be viewed with the naked eye |
| Visual Flight Rules | Set of regulations under which a pilot operates an aircraft in weather conditions generally clear enough to allow the pilot to see where the aircraft is going. |
| Visual Line-of-Sight | Remote Pilot in Command (PIC) and person manipulating the controls must be able to see the small UA at all times during flight, unless you have a waiver that permits otherwise. VLOS must be accomplished and maintained by unaided vision, although eyeglasses and contact lenses are allowed |
| Visual Observer | A person acting as a flightcrew member who assists the Small Unmanned Aircraft (UA) Remote Pilot in Command (PIC) and/or the person manipulating the controls to see and avoid other air traffic or objects aloft or on the ground |
