AirCond_PressTest

What is the source of the heated air flow to the mix manifold coming from the forward cargo compartment ?
1. Excess heated air from the passenger cabin and Flight Deck electronics.
2. Air routed through the Flight Deck electronics.
3. Air routed through the E & E compartment.
4. Air routed through the Flight Deck electronics and the E & E compartment.
The mix valve position indicators indicate ?
1. The position as selected by the temperature selector in the automatic mode.
2. The position as selected by the temperature selector in the manual mode.
3. The actual position of the mix valve in the manual mode.
4. The actual position of the mix valve in both manual and automatic mode.
When the recirc fan switch is in AUTO the fan will operate
1. Continuously regardless of Pack switch position.
2. Only if one or both Pack switches are on.
3. Continuously, except with both Packs on and one or both in HIGH.
4. According to the cooling temperature demands in the passenger cabin.
What is the maximum allowable differential pressure ?
1. 7.90 psi
2. 8.45 psi
3. 8.65 psi
4. 9.10 psi
In normal cruise the air conditioning ram air doors
1. modulate between opened and closed according to cooling requirements.
2. remain fully closed.
3. remain fully open.
4. will open only if either pack trips off.
When are the ram air doors fully open ?
1. Only on the ground.
2. On the ground or during slow flight with the flaps retracted.
3. On the ground or during slow flight with the flaps not fully retracted.
Duct overheat detection for the right pack is located
1. in the mix manifold.
2. in the duct leading from the pack to the mix manifold.
3. in the duct leading from the mix manifold to the sidewall riser.
4. in the duct leading from the right pack valve to the pack.
Duct overheat detection for the left pack is located
1. in the mix manifold.
2. in the duct leading from the left pack to the mix manifold.
3. in the duct leading from the left pack valve to the pack.
4. in the duct leading from the left pack to the Flight Deck.
A duct overheat will
1. cause both mix valves to drive full cold and illuminate the DUCT OVERHEAT light.
2. trip off the related pack and illuminate the PACK TRIP OFF light.
3. close the related pack valve.
4. illuminate the DUCT OVERHEAT light and requires manually selecting COOL with the related temperature selector.
A BLEED TRIP OFF is caused by
1. an over temperature condition.
2. an over pressure condition.
3. either an over temperature or over pressure condition.
4. an over pressure and over temperature condition.
If the automatic temperature controller fails
1. the mix valves drive to full cold and may be controlled manually.
2. the mix valves drive to a medium setting and may be controlled manually.
3. the mix valves remain at the last setting and may be controlled manually.
4. the mix valves remain at the last setting and may not be controlled manually.
What is the primary source of conditioned air for the flight deck ?
1. The left pack.
2. The right pack.
3. The mix manifold.
4. Both packs.
The recirc fan is
1. driven by an AC motor.
2. driven by a DC motor.
The ram air system deflector doors are electrically extended
1. at any time the ram air doors are open.
2. when the landing gear is down.
3. when the flaps are extended.
4. when activated by the ground safety sensor.
Using engine bleed air when will a pack automatically switch to HIGH ?
1. On the ground if one pack is not operating and the pack switches are in AUTO.
2. In flight with one pack not operating with flaps extended and the pack switches in AUTO.
3. In flight with one pack not operating with flaps up and the pack switches in AUTO.
If a pack valve closes, what is the effect on the respective mix valve ?
1. The mix valve drives to full cold.
2. The mix valve remains in the position it was in when the pack valve closed.
3. The mix valve drives to a neutral "average temperature" position.
4. The mix valve drives to warm.
How is the bleed air from the engine initially cooled for cabin temperature control ?
1. An heat exchanger in the ram air system.
2. The Air Cycle Machine (ACM).
3. Engine fan air.
The ram air doors are fully open in flight under which of the following conditions ?
1. Slow flight with the flaps not fully retracted.
2. Slow flight with the flaps fully retracted.
3. Low altitude as demanded by the temperature controller.
4. The ram air doors are only fully open on the ground.
An overheat in the APU bleed air duct will illuminate which warning light on the Bleed Air Panel ?
1. The left WING-BODY OVERHEAT warning light.
2. The right WING-BODY OVERHEAT warning light.
3. The left BLEED TRIP OFF warning light.
4. The right BLEED TRIP OFF warning light.
The OVHT TEST push button switch on the Bleed Air Panel tests which circuits ?
1. The wing body overheat circuits.
2. The bleed trip overheat sensor circuits.
3. The pack trip overheat sensor circuits.
4. The wing body overheat circuits and bleed trip overheat sensor circuits.
If only one pack is operating, the operating pack will regulate to high flow with the pack switch is in AUTO under what conditions ?
1. In flight with the flaps up.
2. Any time when only one pack is operating.
3. When operating the pack with the APU as the only bleed source.
4. When operating the pack with the APU as the only bleed source or in flight with the flaps up.
The PACK TRIP OFF warning light indicates which condition ?
1. The pack temperature has exceeded limits.
2. The pack temperature or pressure has exceeded limits.
3. The bleed air pressure has exceeded limits.
4. A fault in the Auto Temp Controller.
The BLEED TRIP OFF light illuminated indicates what condition(s) ?
1. Excessive engine bleed air temperature.
2. Excessive engine bleed air pressure.
3. Excessive engine bleed air temperature and pressure.
4. Excessive engine bleed air temperature or pressure.
The TRIP RESET on the Bleed Air Panel will reset which condition(s) ?
1. PACK TRIP OFF only.
2. BLEED TRIP OFF only.
3. WING-BODY OVERHEAT and PACK TRIP OFF.
4. PACK TRIP OFF and BLEED TRIP OFF.
What will cause illumination of the DUAL BLEED warning ?
1. The APU bleed air switch is ON and the number 1 engine bleed switch is ON.
2. The APU bleed air valve is open and the number 1 engine bleed switch is ON.
3. The APU bleed air valve is open and the number 1 engine bleed switch is ON or the number 2 engine bleed switch is ON and the isolation valve is open.
4. The APU bleed air switch is ON and either engine bleed air switch is ON with the Isolation Valve switch in OPEN.
With the Isolation Valve switch in AUTO, what will cause the isolation valve to open ?
1. Positioning the engine bleed and pack switch to OFF on the same side.
2. Positioning either engine bleed and either pack switch to OFF.
3. Positioning either engine bleed or either pack switch to OFF.
4. Positioning the APU bleed valve to OFF.
What is the normal position of the isolation valve when the Isolation Valve switch is in AUTO ?
1. Open.
2. Closed.
Will the APU bleed valve open when the APU bleed switch is positioned to ON ?
1. Yes, regardless of whether the APU is operating or not.
2. Yes, but only if the APU is operating.
What is indicated if the AUTO FAIL warning light is illuminated on the Cabin Pressure panel with regard to the automatic controllers ?
1. A single controller failure.
2. Both controllers have failed if the MANUAL light is also illuminated.
3. Both controllers have failed.
If both the AUTO FAIL and MANUAL warning lights on the Cabin Pressurization panel are illuminated, what is indicated with respect to the automatic controllers ?
1. Both controllers have failed.
2. A single controller has failed and pressurization has been manually selected to the operating controller.
3. Both controllers have failed and pressurization must be controlled manually.
4. A single controller has failed and pressurization has automatically switched to the operating controller.
What is indicated by the OFF SCHED DESCENT warning on the Cabin Pressurization panel ?
1. The aircraft has not reached the planned cruise altitude as set in the FLT ALT indicator.
2. The aircraft has descended before reaching the planned cruise altitude as set in the FLT ALT indicator.
3. The cabin rate of descent is excessive.
If the aircraft must return to the origin airport due to a malfunction, what is the landing altitude as programmed by the automatic controller ?
1. The altitude as set in the LAND ALT window.
2. The take-off airport elevation.
3. The cabin altitude as sensed by the controller before take-off.
4. The take-off airport elevation, but only if the FLT ALT indicator is reset.
What is the maximum altitude that may be set in the LAND ALT window on the Cabin Pressurization panel ?
1. 14,000 feet.
2. 10,000 feet.
3. 13,280 feet.
4. 9,600 feet.
What is the maximum altitude that may be set in the FLT ALT window on the Cabin Pressurization panel ?
1. 41,000 feet.
2. 42,000 feet.
3. 41,500 feet.
4. 50,000 feet.
How much time is required to drive the pressurization outflow valve through its full range using the manual control ?
1. 20 seconds.
2. 2 minutes.
3. 10 seconds.
4. 1 minute.
What is the source of barometric pressure used by the pressurization system automatic controllers ?
1. The Captain's altimeter.
2. The ADIRUs.
3. The left pitot static system.
4. The standby pitot static system.
Why is throttle position used by the automatic pressurization controllers ?
1. To pressurize the cabin at the start of the take-off roll when take-off thrust is applied.
2. To de-pressurize the cabin at lower power settings on the ground.
3. To regulate the amount of bleed air used for pressurization.
4. To initiate the cabin pressurization descent schedule at top of descent.
If the controller is not responding, the AUTO FAIL warning light on the Cabin Pressurization panel will illuminate if the cabin altitude exceeds: ?
1. 14,000 feet.
2. 15,800 feet.
3. 10,000 feet.
4. 15,000 feet.
If the controller is not responding, the AUTO FAIL warning light on the Cabin Pressurization panel will illuminate if the cabin differential pressure exceeds: ?
1. 8.75 psi.
2. 7.45 psi.
3. 8.45 psi.
4. 9.1 psi.
If the controller is not responding, the AUTO FAIL warning light on the Cabin Pressurization panel will illuminate if the cabin rate of descent or climb exceeds : ?
1. + or - 3000 fpm.
2. + or - 2000 fpm.
3. + or - 4000 fpm.
4. + or - 6000 fpm.
What is the maximum negative cabin pressure differential ?
1. .125 psi.
2. 0 psi.
3. 1.25 psi.
4. .25 psi.
What cabin altitude is the cabin regulated to at 41,000 feet ?
1. 8,000 feet.
2. 6,000 feet.
3. 10,000 feet.
4. 9,600 feet.
The source of bleed air is provided by ?
1. The 5th. stage of the compressor section.
2. The 9th. stage of the compressor section.
3. The 5th. stage of the compressor section augmented by the 9th. stage.
4. The 9th. stage of the compressor section augmented by the 5th. stage.
The engine bleed valve is operated by ?
1. A DC motor.
2. An AC motor.
3. A DC motor and bleed air pressure.
4. An AC motor and bleed air pressure.
The 5th. stage bleed air valve acts as a ?
1. pressure regulator and shutoff valve.
2. pressure shut off and modulating valve.
3. temperature regulator and shutoff valve.
4. bleed air pressure and temperature modulating valve.
The 9th. stage bleed air valve acts as a ?
1. pressure regulator and shutoff valve.
2. modulating and shut off valve.
3. temperature regulator and shutoff valve.
4. bleed air pressure and temperature modulating valve.

Air Conditioning and Pressurization 700