3. INTRODUCTION
It is an electronics device used to
record any instructions send to
any electronics system in an
aircraft
It records specific parameters of
performance of aircraft
A black box consist of FDR &
CVR .
4. HISTORY
The first prototype FDR
was made in 1956 By
DAVID WARREN in
aeronautical research
laboratories of
Melbourne , Australia .
5. flight data recorder
It is an electronics device
used to record any
instructions send to any
electronics system on an
aircraft.
It records various
performance parameters
on an aircraft .
6. INSIDE THE BLACK BOX
A FDR is shown below which is recovered after a
crash
7. Cockpit voice recorder
It records the audio environment in the flight deck of
an aircraft for the purpose of accident & incidents .
This is typically achieved by recording the signals of
the microphones & earphones of the pilots headsets &
of an area microphone in the roof of the cockpit .
According to FAA after 2005 the recording duration is
minimum of 30 minutes .
But according to NTSB it should be of 2 hours.
11. MAGNETIC TAPES
This technology was introduced in late
`1960’s & made magnetic tapes a
recording medium up to the
introduction of solid state technology .
CVR & FDR records over the oldest
data with the newest data in an endless
loop recording pattern .
Then DFDR’S were introduced which
can record at 64 12-bit data per
seconds. But it was limited to flights
having digital avionics like boeing 767
& airbus a320 .
In this technology it can record up to
30 min of data .
12. solid state technology
The introduction of this technology expanded
recording capacity , enhanced crashfire survivability
,& improved recording reliability .
It can record up to 64 12 bit data words per seconds
or four times the capacity of magnetic tapes in DFDR’s
It can records up to 25 hours of flight data . .
13. TESTING A CSMU
(CRASH SURVIVABLE MEMORY UNIT)
CRASH IMPACT (researchers shoot the CSMU down
in an air cannon to create an impact of3400Gs)
PIN DROP (researchers apply 500 pound weight with
a 0.25 steel pin)
STATIC CRUSH(for five minute researchers apply5000
pound per square inch to each six axis points)
14. FIRE TEST (researches apply 1100 c for 1 hour)
DEEP SEA SUBMERSION (researchers place the
CSMU in a tank of salt water up to 24 hours)
SALT WATER SUBMERSION (it must survive in a salt
water up to 30 days)
FLUID IMMERSION(various components are placed
in variety of aviation fluids like jet fuels , lubricants etc
.)
15. Parameters recorded by most FDR’S
Time
Pressure attitude
Air speed
Vertical acceleration
Magnetic heading
Fuel flow
Horizontal stabilizer
Control column position
Control wheel position
Rudder –pedal position
16. ADVANTAGES
It is very useful for accident
investigations .
The mistakes or error can be
avoided in other aircrafts .
