In Flight Entertainment System

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In Flight Entertainment System

• IFES (NRE)

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IFES

• Several FAA ADs were issued on large transport
  category aircraft 737, 747,757, 767, DC-9, DC-10,
  A-340)

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Issues

• Inability to load shed bus feeding IFES (NRE)
  without affecting required loads
• Inability to remove power from IFES without
  pulling CBs
• Crew procedures not revised to address removal of
  power from IFES

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IFES (NRE)

• Proper selection of wiring and coordinated CBs.
  Adequate electrical load analysis
• The switching must be incorporated as close as
  possible to the bus
• Proper entry to AFM sections and crew Manual, if
  applicable
• Proper definition of the configuration, ICAW

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Proper Documentation of IFES (NRE)

• Type design includes drawings and specifications
  necessary to define the wiring configuration,
  wire routing, shielding, clamping, conduits, etc.
• Obtain or determine the applicable OAM design
  standards and/ or practices for a given
  installation
• Inspect the aircraft to be modified to ensure
  compatibility

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System Safety Assessment (NRE)

• An SSA (FHA, FMEA, Zonal analysis, as applicable)
  is done as part of installation of any equipment
  on the aircraft.
• Failure of wiring bundles (e.g.chafing) may
  affect the required systems (separation from
  aircraft basic wiring)
• Modifications compatibility with installation and
  routing practices for original type design

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IFES (NRE)

• The installation of IFES (NRE) must not result in
  any degradation to the level of safety which was
  achieved at the time of the original type
  certificate

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Objectives/ Draft Policy (TCCA)

• FAA Policy was originally intended for large
  transport aircraft where the IFES is consuming
  large amount of electrical power and there are
  multiple outlets
• TCCA has drafted a Policy which will indicate its
  validity on all transport category aircraft where
  the IFES (NRE) is fitted. It should also be
  considered on commuter category

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Discussion