1.
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:
A
1 only
B
2 and 3 only
C
1 and 2 only
D
1, 2 and 3