Section 13

When operating mode C transponder, you need to inform ATC of height or altitude deviations of:

• 15m

• 30m (100ft)

• 60m

• 90m (300ft)

For Aircraft operating in Singapore FIR, Transponder to be set to:

• Mode 3A and Mode C

• Mode A or Mode C, depending on ATC instruction

When carrying a transponder, when must it be switched on?

• At all times

• During take-off

• During landing

• En-route in flight

When encountered unlawful interference, which SSR code is used?

• 7500

• 7600

• 7700

When an aircraft has been intercepted by another aircraft, in the absence of ATS instructions for transponder code, the pilot should set:

• Mode A, 7700

• Mode C, 7500

• Mode C, 7600

• Mode S, 7700

Radio failure squawk:

• 7500

• 7600

• 7700

• 7400

In the absence of any regionally agreed transponder setting or a setting issued by ATC, which mode(s) are codes should be selected by an aircraft operating in Singapore airspace?

• Mode A only, code 1200

• Mode C only, code 1200

• Mode C only, code 2000

• Modes A and C, code 2000

Pilot report altitude or flight level to nearest:

• 50ft (Xm)

• 100ft (Xm)

• 200ft (Xm)

• 300ft (Xm)

What is the primary reason to have ACAS II?

• To avoid collision with other aircraft

• For information for ATC

• Maintain separation

Why do you have ACAS on board?

• ACAS is to be used by pilots in the avoidance of potential collisions, the enhancement of situational awareness, and the active search for (and visual acquisition of) conflicting traffic. Mandatory in RVSM

• ACAS is to be used for Weather Avoidance Procedure