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In Flight Entertainment System. IFES (NRE). IFES. Several FAA AD’s were issued on large transport category aircraft 737, 747,757, 767, DC-9, DC-10, A-340). Issues. Inability to load shed bus feeding IFES (NRE) without affecting required loads

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In Flight Entertainment System

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In Flight Entertainment System

IFES (NRE)


IFES

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


Issues

  • Inability to load shed bus feeding IFES (NRE) without affecting required loads

  • Inability to remove power from IFES without pulling CB’s

  • Crew procedures not revised to address removal of power from IFES


IFES (NRE)

  • Proper selection of wiring and coordinated CB’s. 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


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


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


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


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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