SELCAL & PREFLIGHT SELCAL CHЕСК: DGCA Radio Telephony (R/T) questions

Question 1

What is the main purpose of the SELCAL system in aviation?

Accepted Answer

To selectively alert aircraft by coded tones

Answer

To encrypt cockpit communications

Answer

To broadcast automated flight plans

Answer

To record cockpit voice data

Question 2

How many tones are used in a single SELCAL code?

Accepted Answer

Four

Answer

Two

Answer

Three

Answer

Five

Question 3

Duration of SELCAL?

Accepted Answer

2 seconds

Answer

1 second

Answer

5 seconds

Answer

10 seconds

Question 4

What happens in the cockpit upon receipt of the correct SELCAL code?

Accepted Answer

A light and/or chime is activated

Answer

Flight controls are unlocked

Answer

Aircraft systems are shut down

Answer

Cabin lighting is adjusted

Question 5

Which letters are excluded from SELCAL code assignments?

Accepted Answer

I, N, O

Answer

B, E, G

Answer

Q, V, Z

Answer

F, H, K

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