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ADDS
Aviation Digital Data Service
VFR
Visual Flight Rules we fly under Visual Flight Rules
TCAS
Traffic Alert and Collision Avoidance Systems Technology in the cockpit can help pilots to see and avoid other aircraft. All air carrier aircraft are equipped with Traffic Alert and Collision Avoidance Systems.
Scud Running
This occurs when a pilot tries to maintain visual contact with the terrain at low altitudes while instrument conditions exist.
Weeping wing
Deicing systems pump fluid from a reservoir through a mesh screen embedded in the leading edges of the wings and tail. depend on airflow as well, and if the primary air intake ices, an alternate air door either opens automatically
DUAT
Direct User Access Terminal system
Sterile Cockpit
Complacency and lack of attention are the enemies of MAC avoidance strategies. To keep crews focused, airlines mandate a “sterile cockpit” at altitudes below 10,000 feet AGL; that is, all conversation not pertaining to operation of the aircraft is forbidden during these times.
Induction icing
This tops the charts as the number one cause of icing accidents, comprising a whopping 52 percent.
Atmospheric Conditions
Haze, flight over open water, or an obscured horizon can make it difficult to see distant objects, impairing the ability to refocus vision.
Night Landing Illusions
Landing illusions occur in many forms. Above featureless terrain at night, there is a natural tendency to fly a lower-than-normal approach. Elements that cause any type of visual obscuration, such as rain, haze, or a dark runway environment also can cause low approaches.
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