Airline safety is, amongst other factors, dependent the ability to assess and prioritise risk factors. DNV has, in co-operation with Avinor and four airline companies, developed a risk assessment model for quantifying aircraft hull loss probability during the landing and take-off operations at airport.

Avinor owns 46 Norwegian aiports and this infrastructure forms the backbone of the Norwegian airline transport system. In order to prioritise between different risk factors, DNV helped Avinor develop a risk assessment model for quantifying aircraft hull loss probability during the landing and take-off operations at airports.

The model utilised the fault tree and event tree methodologies and takes into account a number of parameters, e.g. obstacles (terrain, objects, etc), safety areas (RESA, strip, etc), aircraft type, navigation aids, visual aids (lighting, markings, etc), RWY conditions, local weather (turbulence, windshear, etc), pilot skills and ATC interaction.

DNV has analysed around 20 Norwegian aiport (short and long field) since 2004 by using this model, Recently (late 2006), DNV finalised a similar study of the RWY 28 at Zürich Airport. The results from these studies show amongst other the main risk contributors and ranging of potential means for risk reduction with corresponding effects.