ATPL (Philippines) - Navigation 2 question n answers 2023/2024

ATPL (Philippines) - Navigation 2 1. When an aircraft is FL360 is directly above a DME, at mean sea level, the range displayed will be: a. 9 nm b. 0 c. 6 nm d. 12 nm - correct answers c. 6 nm 2. When tracking a VOR radial inbound the aircraft would fly: a. a constant track b. a great circle track c. a rhumb line track d. a constant heading - correct answers b. a great circle track 3. The maximum range an aircraft at FL370 can receive transmission from a VOR/DME at 800 ft is: a. 200 nm b. 243 nm c. 220 nm d. 275 nm - correct answers d. 275 nm 4. Which of the following may cause inaccuracies in ADF bearings? a. static interference, height effect, lack of failure warning b. lack of failure warning, station interference, static interference c. station interference, mountain effect, selective availability d. coastal refraction, slant range, night effect - correct answers b. lack of failure warning, station interference, static interference 5. Which of the following is likely to have the greatest effect on the accuracy of ADF bearings? a. interference from other NDB's, particularly at night b. interference between aircraft aerials c. interference from other NDB's, particularly by day d. frequency drift at the ground station - correct answers a. interference from other NDB's, particularly at night 6. The accuracy of ADF within the DOC by day is: a. +/-2deg b. +/-1deg c. +/-5deg d. +/-10deg - correct answers c. +/-5deg 7. The period of validity of the navigational database is: a. 30 days b. 21 days c. 35 days d. 28 days - correct answers d. 28 days 8. The accuracy required of a precision area navigation system is: a. 1 nm b. 5 nm