The document discusses the history and purpose of the black box flight recorder. It begins with an introduction to the black box and its role in recording aircraft performance parameters. It then discusses the history of the black box, invented by Dr. David Warren. The main components of the black box are the flight data recorder and cockpit voice recorder. The flight data recorder tracks aircraft systems data, while the cockpit voice recorder tracks conversations in the cockpit. Black boxes are designed to survive crashes through rigorous testing and are able to transmit location signals to help with retrieval. The information recovered from black boxes is crucial for investigating aircraft accidents and identifying potential causes.

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BLACK-BOX
Built To Survive

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CONTENTS
 Introduction
 History
 Inside The Black Box
Flight Data Recorder
Cockpit Voice Recorders
 Technology used for Recording
 Built To Survive
 Testing a CSMU
 Working of Black Box
 Use Of Black Box
 Conclusion

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Introduction
The Black Box is a Flight Recorder
used to record specific Aircraft
performance parameters

4. 4
History
Dr. David Warren

5. 5
Inside the black-box
)
VR)

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Flight Data Recorders
The Flight Data Recorder(FDR) is
designed to record the operating data
from the plane’s systems

7. • Time
• Pressure altitude
• Airspeed
• Vertical acceleration
• Rudder-pedal position
• Control-wheel position
• Horizontal stabilizer
• Fuel flow
Few Parameters Recorded By Most FDRs
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Cockpit Voice Recorder
CVR is designed to track the
conversations of flight crew

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

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Technology Used For Recording And Storage
Magnetic tape
Solid-state technology

11. Memory Boards
Magnetic tape recorder Solid state recorder
• Introduced in the 1960s
• It can track about 100
parameters.
• Magnetic-Tape CVRs store
the last 30 minutes of
sound.
• Introduced in the 1990s
• It can track more than 700
parameters in larger
aircraft.
• CVRs that used solid-state
storage can record 2 hours
of audio.
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12. Memory Boards
Magnetic tape recorder Solid state recorder
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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 recorders’
chassis and inner
components are
mangled.

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

15. Working of Black Box
Underwater Locator
Beacon (ULB)
 Submergence sensor on
the side of the beacon.
 Pulses at 37.5 kilohertz
(kHz).
 sound as deep as 14,000
feet (4,267 m).
 The beacon cannot be
heard by the human ear but
can be easily detected by
sonar. 15

16. Working of Black Box
Retrieving Information
 This portable interface can allow
investigators quick access to the
data on a black box..
 Retrieval of FDR
 Retrieval of CVR
 Once the beacon begins
"pinging," it pings once per
second for 30 days.
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17. Use of Black Box
• Retrieval comes first.
• Help identify the reasons for a plane crash.
“Mistakes are a great educator when one
is honest enough to admit them and
willing to learn from them”
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18. This black box alone was left to tell the story of the crash of
Egypt Air Flight 990.
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19. The cockpit voice recorder from the downed Alaska
Airlines Flight 261
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21. • From the study of Black Box we derived a
information that how the information about
aircraft mishap is analyzed & unanswered
question is answered.
• The black box was good, in its time .
• Let’s pray for safe Journey.
• The U.S. government's Next Generation Air
Transportation System, is now to take up the
challenge.
Conclusion
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