Operational Use of SSR

Mode C derived level information displayed to the controller shall be verified at least _________ .

• once

• twice

• when aircraft changes QNH

• as long as aircraft changes altitude

Which IFF mode/modes must be switched on during aircraft's transit to and from their respective training/operating areas, in peacetime throughout the flight of the aircraft?

• Mode 1 and Mode C

• Mode 2 and Mode 3

• Mode 3 and Moce C

• Mode 3 and Mode A

What are the SSR code blocks that have been assigned to International Flights in this region?

• 2200 to 2277

• 4200 to 4277

• 4600 to 4677

• 4300 to 4377

What is the tolerance value used to determine that Mode C derived vertical position information displayed to the controller is accurate?

• +/- 200ft

• +/- 300ft

• +/- 400ft

• +/- 500ft

Military SSR Mode 3 codes are assigned by _______ .

• 203 Sqn

• Civil Aviation Authority of Singapore

• Air Operations Command

• Base Command Post

The mode 3 code blocks assigned to military flights in Singapore FIR are: a. 4200 to 4277 b. 4300 to 4377 c. 2100 to 2177 d. 0100 to 0177

• a and b

• a and c

• c and d

• a and d

Aircraft equipped with transponder will squawk on _______ if experiencing radio failure.

• 7700

• 7701

• 7706

• 7600

What does the SSR code "7500" represent?

• Aircraft experiencing an emergency

• Aircraft experiencing aircrew problem

• Aircraft experiencing unlawful interference

• Aircraft experiencing radio failure

What does the SSR code "7700" represent?

• Aircraft experiencing an emergency

• Aircraft experiencing aircrew problem

• Aircraft experiencing unlawful interference

• Aircraft experiencing radio failure

The primary applications of SSR in aviation are; a. Identification b. Surveillance c. Approval d. Altitude Reporting

• a, b and c

• a, b and d

• a, c and d

• b, c and d