VIII Scan the text to fill in the gaps in each sentence with the prepositions.Write the correct sentences.

1… the ADF instrument … the cockpit, the needle points … wards the selected

beacon.

2 The ADF works … using the electromagnetic properties … the signal produced

… the beacon.

3 ADF is one … the most important things … aircraft’s navigation systems.

4 Another engineered version … the system was deployed … Amalgamated

Wireless Australasia Limited … the early 1950s.

5 DME is similar … secondary radar, except … reverse.

6 A typical DME ground transponder system … en-route or terminal navigation

will have a 1kW peak pulse output … the assigned UHF channel.

7 The DME is also important system … aircraft.

8 The TCAS system builds a three dimensional map … aircraft … the airspace,

incorporating their range, altitude, and bearing

9 Nowadays such systems as TCAS is very important … orientation … space

10 It automates a wide variety … in-flight tasks, reduces the workload … the flight

crew … the point that modern aircraft no longer carry flight engineers or

navigators.

11 The FMS sends the flight plan … display … the EFIS, Navigation Display

(ND) or Multifunction Display (MFD).

IX Choose the correct answer.

What system combines the flight information and reduces the workload on

the flight crew?

A) FMS

B)VOR

C) TCAS

D)Weather radar system

E) Marker beacon