Cockpit Voice RecorderNavigation — Instrumentation — DGCA CPL practice questions

Question 1 of 2

According to the regulations, when must the FDR on a 12-seat turbo-prop aircraft begin recording?

A.Switch on until switch off

B.From before the aircraft is capable of moving under its own power to after the aircraft is no longer capable of moving under its own power

C.From lift-off until the weight-on-wheels switch is made on landing

D.At commencement of the taxi to turning off the runway

All 2 questions — Cockpit Voice Recorder

Navigation — Instrumentation · DGCA CPL. The correct option is marked on each.

Q1. According to the regulations, when must the FDR on a 12-seat turbo-prop aircraft begin recording?
- A.Switch on until switch off
- B.From before the aircraft is capable of moving under its own power to after the aircraft is no longer capable of moving under its own power✓
- C.From lift-off until the weight-on-wheels switch is made on landing
- D.At commencement of the taxi to turning off the runway
Why: The regulatory requirement is stated verbatim in the source: "The FDR must start automatically to record the data prior to the aeroplane being capable of moving under its own power and must stop automatically after the aeroplane is incapable of moving under its own power." In practice this means from first engine start until 5 minutes after last engine shutdown. A 12-seat turbo-prop exceeds the 9-seat threshold and qualifies for FDR requirements. See Section 5 . — This is fundamentally a regulations question about the FDR, not the CVR. The wording "capable of moving under its own power" is…
Q2. What is the GPWS mode 3 audible alert?
- A."don't sink, don't sink" followed by "whoop, whoop, pull up" if the sink rate exceeds a certain value
- B."don't sink, don't sink" followed immediately by "whoop, whoop, pull up"
- C."don't sink, don't sink" continuously✓
- D."Terrain, don't sink" continuously
Why: GPWS Mode 3 — Altitude loss after take-off or go-around. The alert is "DON'T SINK, DON'T SINK" (spoken phrase), repeated continuously while the condition exists. It does not immediately escalate to "pull up." Escalation to the "whoop whoop pull up" siren is a feature of Mode 1 (excessive descent rate). See Chapter 34 (GPWS). — GPWS Mode 3 = altitude loss after T/O or go-around = "DON'T SINK." GPWS Mode 1 = excessive descent rate = "WHOOP WHOOP PULL UP." Mode 2 = excessive terrain closure = "TERRAIN, TERRAIN." Keep these distinct.