UPSC CSE Prelims
Question 57
Which of the following statements with regard to Black Boxes used in modern aircrafts is/are correct?
- They carry a beacon emitting red light pulses to facilitate underwater detection.
- They record both the cockpit voice and flight data.
- Their memory units are made using either stainless steel or titanium.
Select the answer using the code given below:
View correct answer and explanation
Correct answer: B
Correct Option: B
Explanation: Aircraft flight recorders contain a flight-data recorder and a cockpit-voice recorder; their crash-protected memory is housed in robust metal assemblies.
Statement-wise Analysis:
Statement 1: Incorrect - Underwater locator beacons emit acoustic pings, not red light pulses.
Statement 2: Correct - The black-box system records flight parameters and cockpit audio.
Statement 3: Correct - Crash-survivable recorder housings may use stainless steel or titanium for protection.
Option-wise Analysis:
A: Incorrect - Includes unsupported item(s) 1 and omits supported item(s) 2, 3.
B: Correct - This option includes the supported item(s) and excludes the unsupported ones.
C: Incorrect - Includes unsupported item(s) 1 and omits supported item(s) 3.
D: Incorrect - Includes unsupported item(s) 1.