an aviation incident is an occurrence ___ an accident, associated with the ___ of an aircraft, which affects or could affect the ___. pilot/controller ___is vital to airport ___. all instructions must be ___, particularly during ___ or when the ___ is busy. how come we don't hear too much about ___? quite frankly, if it doesn't end as an accident with ___ the media is generally not ___. therefore, there are more incursions taking place than the ___ knows about. if you __ a particular airport, you probably know ____ pretty well. however, flying into an __ airport can ___ many challenges. secondary radar is used for the ___ of aircraft. an ___ of the secondary radar ___ is suggested for the identification and __ of aircraft taxiing on the ___. some busier airports have Surface Movement Radar(SMR) ___ aircrarft and ___ on the ground. these are used by the ground controller as ___ to control ground traffic, particularly at night or in poor visibility. aircraft lighting can be ___ to improve the visibility of an aircraft operating on the surface. ___ allow the use of ___ and beacons for maximum__ of the aircraft operating on the surface and are used when crossing___. runway incursion incidents and ___ on airport runways, taxiways and ___ are ___. in the past several years, there has been a ___ increase in runway incursions. the aircraft was preparing for __ for Sydney when the __ being used to pushback the airliner ___ which caused the truck to __ with the aircraft. the types of injuries that can be __while on the ground are ___. passengers have been injured because of __ after the seatbelt sign was ___ at the gate.