The document discusses the history and purpose of flight data recorders, also known as black boxes. It details that the first black box prototype was created in 1956 and that modern black boxes contain flight data recorders and cockpit voice recorders to record aircraft parameters and pilot conversations. Black boxes are designed to survive crashes through rigorous testing and by storing data in crash-survivable memory units. Retrieving and analyzing the data from black boxes after accidents helps investigators determine the causes of crashes.

1. by:
ASWANTH.T
ID:12006270(49)

2. CONTENT:
 Introduction
 History
 Inside The Black Box
Flight Data Recorder
Cockpit Voice Recorders
● Technology used for Recording and Storage
● Built To Survive
● Testing a CSMU
● Retrieving Information
● Conclusion

3. INTRODUCTION
The Black Box is a flight data recorder used
to record specific aircraft performance
parameters.

4. HISTORY
The first prototype of FDR was produced in 1956
by Dr. David Warren in the then Aeronautical
Research Laboratories of Melbourne, Australia.

5. INSIDE THE BLACK BOX :
 Flight Data Recorder (FDR)
 Cockpit Voice Recorder (CVR)

6. Flight Data Recorders
The Flight data recorder (FDR) is designed to
record the operating data from the plane's systems.

7. Parameters Recorded By Most
FDRs:
 Time
 Pressure at altitude
 Airspeed
 Vertical acceleration
 Magnetic heading
 Control-column position
 Rudder-pedal position
 Control-wheel position
 Horizontal stabilizer
 Fuel flow

8. Cockpit Voice Recorders:
CVR is designed to track the conversations of
the flight crew.

9. The Positions Of The Four
Microphones:
 Pilot's headset
 Co-pilot's headset
 Headset of a third crew member (if there is a third crew
member)
 Near the center of the cockpit, where it can pick up audio
alerts and other sounds

10. Technology used for Recording
and Storage:
 Magnetic Tape
 Solid-State Technology

11. Built To Survive:
In many airline accidents,
the only devices that
survive are the Crash-survivable
memory units
(CSMUs) of the flight data
recorders and cockpit
voice recorders. Typically,
the rest of the recorder’s
chassis and inner
components are damaged.

12. Testing a CSMU
There are several tests that make up the crash-survival
sequence:
 Crash impact
 Fire test
 Fluid immersion
 Deep-sea submersion
 Salt-water submersion
 Pin drop
 Static crush

13. Retrieving Information:

15. CONCLUSION:
From the data of Black Box we can understand that how
the information about aircraft crashes is analyzed &
unanswered questions are answered.

16. ANY QUESTIONS?

17. THANKYOU