This was a manual process requiring training Education_teaching , practice Practice and adherence to procedure .

After Geiseric 's death , relations with the surviving Eastern Roman Empire normalized , although tensions flared Lighting up occasionally due to the Vandals ' militant adherence to Arianism and their persecution of the Chalcedonian native population .

The final report Reporting was issued on 15 August 2002 , concluded Coming_to_believe that the individual factors contributed Giving to the accident was non adherence to a number of SOPs and loss of spatial and situational awareness by the aircraft crew during the approach Arriving and final phases of the flight .