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29 Cards in this Set
- Front
- Back
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What fan is used to cool the cockpit displays?
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Ground: Display Fan #2
In-Flight: Display Fan #1 |
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What is the purpose of the APU LCV?
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It modulates to allow APU priority be given to the electrical system.
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What does the L ENG START status msg mean?
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The left engine air turbine starter valve is open
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What happens with a pack overtemp or overpressure in-flight?
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1. Associated 10th stage valve will close
2. Associated pack valve will close 3. Isolation valve will close. |
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When in manual pressurization where is the information displayed?
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1. Primary Page
2. Status Page 3. ECS Synoptic Page |
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On the ground how can pneumatic air to operate the ECS be obtained?
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1. Ground power air cart
2. APU 3. Either or both engines |
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What does 10th stage (low pressure) bleed air supply?
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Supplies bleed air for:
1. Air Conditioning 2. Pressurization 3. Avionics Cooling 4. Air for the engine ATS |
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What does 14th stage (high pressure) bleed air supply?
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1. Engine Cowl Anti-Ice
2. Wing Anti-Ice 3. Thrust Reversers |
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What is the maximum altitude APU bleed air may be used?
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15,000 ft
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During a pack overpressure or overtemp will the packs shutdown automatically?
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Yes
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How many outflow valves are there and what type are they?
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1. Primary
2. Secondary Both are electro-pneumatic |
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What happens when you press the PRESS CONT switchlight?
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Press it once - manual
Press it twice - switches CPAM's |
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How do you reset the automatic press controllers?
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Either land once or press the PRESS CONT switchlight twice.
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What position do the 10th stage valves fail to?
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Fail - Closed
*Note: It takes air and electricity to open and/or close |
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What does the CPAM do?
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Automatically deployes the pax 02 at 14,000 +/- 500. Also turn on SEAT BELT sign and NO SMOKING sign at 10,000 if in auto mode.
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What is the minmum recomended pressure for engine starting with APU? By Xbleed?
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APU - 45psi
Xbleed - 60psi |
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What happens when the EMER DEPR switchlight is pressed?
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Both outflow valves open
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What does an amber FAULT light on the PRESS CONT switchlight mean?
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Both pressure controllers have failed
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What does CPAM stand for?
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Cabin Pressurization Acquistion Module
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When will you get a Cabin Altitude Caution? Warning?
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Caution: 8,500
Warning: 10,000 - will also get aurual warning |
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What is the 7th stage bleed air used for?
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Pressurization of the oil seals
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What typeof leack detection is provided for the 10th and 14th stage bleed air ducts?
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10th - dual loop overheat detection
14th - single loop overheat detection |
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During take-off and landing with the cowl and anti-ice selected, what position must the 10th stage valves be in?
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Closed
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RAM AIR is used when?
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In the event of a faiure of both the packs
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What valves must be open for the APU to provide bleed air to the right pack?
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1. APU LCV
2. ISOL valve |
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What altitude does the CPAM automatically pressurize the aircraft to?
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150 ft below field elevation at 85% N1
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At what rate does the cabin climb and descend at?
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Climbs: 500fpm
Descends: 300fpm |
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When do you use the MAN PRESS CONT?
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Only when the QRH tells you to do so?
*NOTE: Will be used in the event of a auto system failure |
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In flight what supplies cooling air to the pack heat exchangers?
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RAM air
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