ATA 47 - INERTING GAS SYSTEM

The Fuel Tank Inerting System (FTIS) includes two sub-systems: a) The Fuel Tank Ventilation System (FTVS). b) The Air Conditioning System (ACS). c) The Engine Bleed Air System (EBAS). d) The Airplane Mode Selector (AMS).

The CSAS gets hot air from the Engine bleed air system and decreases its temperature to a level compatible with the IGGS sub-system. a) The CSAS Inert Gas Generation System (IGGS). b) The CSAS Conditioned Service Air System (CSAS). c) The CSAS Engine Bleed Air System (EBAS). d) The CSAS Air Conditioning System (ACS).

Engine 1 is the primary bleed source and Eng 2, through the X Bleed valve, is the secondary bleed source. a) Engine 1 is the secondary bleed source. b) Engine 2 is the primary bleed source. c) Engine 2 is the secondary bleed source. d) Engine 1 is the primary bleed source.

The bypass valve is installed in the heat exchanger bypass duct and is controlled by the CSAS. a) The bypass valve adds cold air downstream of the heat exchanger. b) The bypass valve adds hot air downstream of the heat exchanger. c) The bypass valve controls the ozone converter. d) The bypass valve is not used in the CSAS.

If there is over-pressure or over-temperature, the CSAS isolation valve closes to stop the system. a) The CSAS isolation valve opens to release pressure. b) The CSAS isolation valve remains unaffected by temperature changes. c) The CSAS isolation valve closes in normal operation. d) The CSAS isolation valve has no impact on pressure.

In normal operation, the CSAS isolation valve is open to let the air go through the ozone converter. a) The CSAS isolation valve remains closed. b) The CSAS isolation valve opens after the ozone converter. c) The CSAS isolation valve opens after the heat exchanger. d) The CSAS isolation valve is not used in normal operation.

If a failure of the CSAS system occurs, the status message "INERT FAULT" will come into view only in flight phase 1 and 10, for maintenance. a) The status message appears in all flight phases. b) The status message appears only in flight phase 2. c) The status message appears only in flight phase 1 and 10. d) The status message never appears.

The MEL tells that the A/C can be dispatched with the system unserviceable for 10 days with no maintenance procedure. a) The MEL allows dispatch with unlimited unserviceable days. b) The MEL requires maintenance immediately. c) The MEL allows a 10-day dispatch without maintenance. d) The MEL does not mention dispatch conditions.

In normal operation, the bleed air is filtered by the. a. CSAS and D-ULPA filter. b. HPGC door and ASM. c. ICU and DFSOV. d. ASM and HPGC door.

Downstream of the D-ULPA filter, air parameters are sent to. a. DFSOV and ASM. b. ICU and ASM. c. Oxygen sensor and ASM. d. HPGC door and DFSOV.

In abnormal operation, if there is overpressure or overtemperature, the ICU de-energizes the. a. IGGS Isolation Gate Valve solenoid and the DFSOV solenoid. b. HPGC door and ASM. c. DFSOV solenoid and the oxygen sensor. d. Oxygen sensor and the ASM.

If the oxygen sensor senses an oxygen rate higher than 12% during abnormal operation, the ICU de-energizes the. a. DFSOV solenoid and the IGGS Isolation Gate Valve solenoid. b. ASM and HPGC door. c. HPGC door and the DFSOV solenoid. d. IGGS Isolation Gate Valve solenoid and the oxygen sensor.

The ASM is the core of the Inert Gas Generation System, and it removes oxygen to produce. a. Oxygen Enriched Air (OEA) and Nitrogen Enriched Air (NEA). b. Hydrocarbons and dust. c. Oxygen and hydrocarbons. d. OEA and HPGC door.

An ASM is a semi-permeable hollow-fiber membrane bundle contained in a. a. Pressure containment canister. b. D-ULPA filter. c. CSAS. d. HPGC door.

In normal operation, the DFSOV is __________ and isolates the IGGS from the center fuel tank. a. open. b. closed. c. partially open. d. malfunctioning.

The ICU supplies the two solenoids of the DFSOV to control the DFSOV position (OPEN/CLOSE) and to control the NEA flow _______. a. LOW. b. HIGH. c. MI. d. LOW/MI/HIGH.