40 Questions
How many water extractors are installed on B737-800/900?
Two, one in each air conditioning pack
What are the indications of a pack trip on B737 800/900?
PACK amber light, MASTER CAUTION and AIR COND annunciator lights
Where does the flight compartment get conditioned air from?
The mix manifold
Where are the main air distribution components located?
In the distribution compartment aft of the forward cargo compartment
Which component controls the trim air pressure regulating and shutoff valve on the temperature controls panel?
The trim air switch
On a B737 800/900, what is the primary flight compartment zone temperature control channel?
A channel of LEFT pack/zone temperature controller
What is the function of the water extractor on a B737 800/900?
To extract water from the air
How many air conditioning packs are there on a B737 800/900?
Two
What happens to the cockpit and passenger lighting if the bus causes a partial loss?
All cabin lights will extinguish
What powers the emergency exit lights and signs?
Separate emergency power supplies in the passenger cabin
What is the maximum refuelling pressure?
50 PSI
What is the voltage used by most of the flight compartment lights?
28 VDC
To defuel No. 1 tank, what should be selected?
No. 1 main tank fuel pumps on, crossfeed valve open and manual defuelling valve open
When will the emergency exit lights automatically come on when armed?
If electrical power to DC bus 1 fails or AC power is turned off
When will the no smoking signs illuminate when selected to auto?
When the landing gear is extended and the flaps are greater than 10 degrees
What tank does the fuel temperature indicator read?
No. 1 tank
Where is the manual defuelling valve located?
Inboard of the No. 2 engine
What happens to the fasten belts signs when selected to auto?
They will illuminate when the landing gear or flaps are extended
What supplies emergency general lighting in the event of a complete electrical power failure?
The left dome light
How many dripsticks are installed in each main tank?
6
What type of lighting is found in each wheel well?
A dome light and a floodlight
When do the fuelling valve position lights on the external fuelling panel illuminate?
When the respective fuelling valve is open and fuel is being transferred into the tank
How can refuelling be accomplished when the APU is inoperative and no external power is available?
Battery switch on, standby power switch bat, the entire fuel system will operate normally
To defuel No. 2 tank only, what should be selected?
No. 1 and No. 2 main tank fuel pumps on, crossfeed valve open and manual defuelling valve open
What is the correct procedure to lower the service unit?
Insert a small allen wrench or other applicable tool into the latch release hole
What conditions does the fire protection system monitor the airplane for?
Fire, Smoke, Overheat, Pneumatic duct leaks
Where do the fire alarms provide visual and aural indication to the flight crew about a fire?
Avionic compartment, Forward cargo compartment, Aft cargo compartment and Main wheel well
How many engine fire detectors are there in each engine?
Four detectors
Which components monitor detectors for overheat and fire conditions on the engine and fire conditions on the APU?
The engine and APU fire detection module
What does the FAULT/INOP test do?
A check of the module overheat and fire detection circuitry and flight compartment indications
What is monitored by the fire protection system?
Fire, smoke, and overheat conditions
Where is the fire alarm system located?
Engine, APU, and avionic compartment
When will the No Smoking signs illuminate?
When gear and flaps are extended
What does placing the lights test switch to the test position do?
Illuminates all cockpit lighting and warning lights
When do the emergency lights come on if the P5 switch is in the arm position?
When the main lighting system has failed
When does the taxi light turn off with the taxi light switch set to auto position?
When the nose landing gear is not in the down and locked position
What does the airplane pitot system consist of?
Captain's, First Officer's, Auxiliary No. 1 and Auxiliary No. 2
What does the airplane static system consist of?
Captain's, First Officer's, Auxiliary No. 1, Auxiliary No. 2 and Alternate
What does the Electronic Horizontal Situation Indicator (EHSI) provide?
A multicolor display of various navigational and weather radar data
How many navigation unit (VOR/ILS receivers) are installed on the aircraft?
02 units
Test your knowledge of the air conditioning system on the Boeing 737-800/900 aircraft. Questions cover water extractors and pack trip indications.
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