21. Pilots were notified July 7 that the glide slope equipment at Guam would be down for maintenance until Sept . 12. 22. As well, the flight crew attempted to stabilize the approach while allowing the plane to fly below the instrument glide slope . 23. The ground-controlled approach was normal until the aircraft was seen on the precision approach radar suddenly descending below the glide slope . 24. Preparing for the approach, the captain told his first officer and flight engineer, " The localizer glide slope is out ." 25. After the last stop at B�rnova, the train reached the glide slope at Ciurea station, just a few kilometers from Iai. 26. The airport's " glide slope " _ which helps guide the pilot to the runway _ was out for regular maintenance. 27. A first publication on this subject is given in " Frangible design of instrument landing system / glide slope towers ". 28. The Guam airport did not have a working glide slope that night because it had been taken out of service for maintenance. 29. When the glide slope indicator is not available and pilots cannot clearly see the runway, they usually descend in a stair-step pattern. 30. Although the localiser signal would be present throughout the landing, the glide slope had to be disregarded before touchdown in any event.
