11. A radio altimeter , which would have sounded a warning as the plane neared the ground, was not connected. 12. The crash was caused primarily by the aircraft's automated reaction which was triggered by a faulty radio altimeter . 13. A spurious input, such as a radio height greater than the radio altimeter 's maximum, results in a warning. 14. A radio altimeter was sent to Si Fly on 8 October 1999 . The faulty GPWS caught investigators attention. 15. As well as its terminal guidance radar, the midcourse guidance is radio altimeter for use with its autopilot during cruise. 16. The high precision radio altimeter allows the missile to have a minimum-altitude flight above the sea, normally 20 30 m. 17. The Stuka pilot would set the radio altimeter to 750m which was connected to the bomb release and automatic pull out. 18. Suspecting that the failure might originate in the radio altimeter , SI Fly also requested that ATR send them a new radio altimeter. 19. During initial approach, the radio altimeter warning had been activated several times, which indicated less than from the aircraft to the terrain. 20. Suspecting that the failure might originate in the radio altimeter, SI Fly also requested that ATR send them a new radio altimeter .