Exercise 3. Say whether the following statements are true or false. Correct false statements

1. When measured on a passenger-distance calculation, air travel is the safest form of transportation available

2. The fatal incident rate has declined steadily ever since, and, since 1997 the number of fatal air accidents has been no more than 1 for every 2,000,000,000 person-miles flown.

3. All of the ground-based navigation aids are being supplemented by satellite-based aids like Global Positioning System (GPS), which make it possible for aircrews to know their position with great precision anywhere in the world.

4. GPS navigation is not accurate at all for vertical (altitude) as well as horizontal use, and is being used increasingly for instrument approaches as well as en-route navigation.

5. For every billion kilometres travelled, trains have a fatality rate 12 times larger than air travel, while automobiles have a fatality rate 62 times larger.

6. A flight data recorder is usually mounted in the aircraft's cockpit, where it is more likely to survive a severe crash.