Section 5

Question 1

What is there to consider when ATE are doing field plot procedures?

Answer 1

No aircraft are to be permitted to land or take off (this is because ATE will be on foot on the threshold with measuring equipment)

They can vacate the runway at short notice to allow aircraft movements

ATE will be in constant contact with ATC

No communication can be made with ATE while on runway then ATC will need to flash runway lights on and off and if still not able aircraft must go around

ATE must report when they’ve runway vacated

Cannot be done during LVPs

Question 2

What actions should ATC do if there is a fault or faults with equipment ?

Answer 2

All faults should be logged

Equipment handed over to ATE

The fault fixed and tested before handing back to ATC

Log when equipment now working

Question 3

If the GP failed what approach can aircraft make?

Answer 3

Localiser only and Radar can give aircraft 1nm intervals of advisory heights

Question 4

If the localiser failed what approach can an aircraft make?

Answer 4

NDB or an SRA

Question 5

What should the ATCO ADI do if channel 2 UHF fails?

Answer 5

Should select UHF channel 3

Use the standby hand held radio on channel 2 to notify all users the failure and to change to channel 3

Inform ATE and log

And cross couple channels 3 and 119.8 MHz

Question 6

What are the operational limits of the ILS LOC ?

Answer 6

25nm protected horizontal range over a sector 10 degrees either side of the on course line and a 17nm protected range over a sector 35 degrees either side of the on course line

Question 7

What is the operational limits of the ILS GP?

Answer 7

Protected horizontal range of 10nm over a sector 8 degrees either side of the on course line and up to 1.75 and down to 0.3

Question 8

What is the tolerance of the DF?

Answer 8

+- 5 degrees Class B