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1. Programa de Atualização Profissional
Applications of data analysis to the
aviation industry
- reliability maintenance -
by Gláucio Bastos, M.B.A., Ch.E.

2. Programa de Atualização Profissional
time between failure of air conditioning in a Boeing 737
fleet
months months months months months months
months months months months months months

3. Programa de Atualização Profissional
historical and forecast
time between failure estimation is interesting for managers to
schedule properly preventive maintenance and maintain an
inventory of spare parts
months
time between failure of air conditioning in a Boeing 737
fleet

4. Programa de Atualização Profissional
identifying components
responsible for failures
method 1
method 2
method 3
subsystem components
by method 3 - precise definition of contribution of each component
for the failure of aircraft subsystem
historical and forecast

5. Programa de Atualização Profissional
early identification of future failures
spectrum of the current signal of a motor
in good state (solid) and with defective
component (dotted)
The failure of a given component reduces the output torque capacity and increases the
vibration, and if not perceived can lead to catastrophic failure of the engine.
For example, the current spectrum typical of an engine in good condition has a main peak
at 50 Hz and secondary peaks at sidebands of 46 Hz and 54 Hz.
With the defective component the magnitude of the sideband peaks increases by a factor
of about 10 times, which can be detected in the spectrum.

6. Programa de Atualização Profissional
commercial benefits
o adding value and differentiation in preventive maintenance
contract with the client
o fostering extension of preventive maintenance contract with the
client for long term, by continuously receiving operational data for
monitoring to enable equipment performance evaluation