Part 107 Chapter 3 Flashcards

METAR (Meteorological Aerodrome Report) and TAF (Terminal Aerodrome Forecast) reports

A METAR is an aviation routine weather report updated every hour or when significant weather changes occur

A TAF is a Terminal Aerodrome Forecast that provides predicted weather conditions for a 5-mile radius around an airport, updated four times a day

High humidity can reduce air density, which decreases aircraft performance and lift

Wind shear is a sudden change in wind speed or direction, which can lead to loss of control of the drone

The standard lapse rate is a temperature decrease of 2°C per 1000 feet increase in altitude, affecting drone performance by reducing lift at higher altitudes

Higher density altitude reduces air density, decreasing lift and engine performance

Fog or low visibility can prevent the Remote PIC from maintaining visual line-of-sight (VLOS), making operations unsafe and non-compliant with regulations

High winds can reduce control, decrease battery life due to higher power consumption, and increase the risk of accidents

Early morning or late evening, when temperatures are more stable and winds are typically calmer