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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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IFES

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


Issues
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
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
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
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 nre1
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
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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