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TH-57 Fuel System Review

TH-57 Fuel System Review. The two electrical boost pumps installed inside the fuel cell are interconnected by a hose so that they can furnish pressurized fuel through a single line to the engine-driven fuel pump. This pressurization prevents in-line vaporization above 6,000 Pressure Altitude.

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TH-57 Fuel System Review

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  1. TH-57 Fuel System Review

  2. The two electrical boost pumps installed inside the fuel cell are interconnected by a hose so that they can furnish pressurized fuel through a single line to the engine-driven fuel pump. This pressurization prevents in-line vaporization above 6,000 Pressure Altitude.

  3. The engine fuel pump is located on the aft port side of the power accessory gearbox. Fuel enters at the inlet port of the pump and passes through a low pressure inlet at 4 to 30 PSI to the gear element of the fuel pump. The engine driven fuel pump pressurizes fuel at 650-750 psi and passes it to the fuel control unit.

  4. 14.10 SUSPECTED FUEL LEAKAGE

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