Prelims 2026 · Science and Technology · Question 44
Which of the following statements with regard to Black Boxes used in modern aircrafts is/are correct ?<br/><br/>1. They carry a beacon emitting red light pulses to facilitate underwater detection.<br/>2. They record both the cockpit voice and flight data.<br/>3. Their memory units are made using either stainless steel or titanium.<br/><br/>Select the answer using the code given below :<br/>
Answer
2 and 3 only
1 is incorrect because the underwater locator beacon emits acoustic/ultrasonic pings, not red light pulses. 2 is correct because the aircraft 'black box' system covers both cockpit voice recording and flight data recording. 3 is correct because the crash-survivable memory unit may be housed in stainless steel or titanium.