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GfL delivers safety assessment concerning the reduced approach lighting system at airport Münster/Osnabrück

February 2018 | Safety Assessment

In landing direction RWY 27 (ILS CAT I) at airport Münster/Osnabrück (FMO) there is currently a simple approach lighting system (SALS) with an overall length of 420 m being non-compliant regarding the specifications for precision approach runways with an overall length of 900 m after EASA CS-ADR-DSN (see news September 2017). In order to guarantee safe flight operations despite of these deviations GfL conducted a detailed safety assessment according to EUROCONTROL’s recommendations. The related risk analysis was mainly based on extensive flight simulation test with certified airline pilots and supported by geometrical analyses of cockpit visibilities and obstacle clearance altitudes. Within specific scenarios, a huge amount of simulation data was generated and subsequently statistically analyzed to receive statements concerning flight path deviations, scattering of touchdown points and flight attitude parameters. Finally, it was found that the reduced ALS completely fulfils its primary function. For the purpose of safe flight operations and the ALARP principle specific risk mitigation measures were nevertheless derived.

 

Visibility of the ALS from a B757 cockpit at given OCH (© GfL mbH)
Visibility of the ALS from a B757 cockpit at given OCH (© GfL mbH)
Cockpit view of the flight simulator (FTD) at TU Dresden with reduced ALS (© GfL mbH)
Cockpit view of the flight simulator (FTD) at TU Dresden with reduced ALS (© GfL mbH)