Discussion
Consider the following device and function pairs:
Flight data recorder - Aircraft parameters over a long period
Cockpit voice recorder - Speech, radio calls and ambient sound
Underwater locator beacon - Acoustic pulse for underwater search
Quick access recorder - Crash protected backup of the data recorder
How many of the pairs given above are correctly matched?
Answer: D
Correct answer: Only three
The first three are correctly matched: the data recorder holds parameters over a long period, the voice recorder holds speech, radio calls and ambient sound, and the underwater locator beacon emits an acoustic pulse for underwater search.
The fourth is wrong on the essential point. A quick access recorder is not crash protected - it sits in an ordinary enclosure and exists for routine flight data monitoring, which is exactly why it is easy to download.
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