Flashcards in boeing 737-800 Deck (146):
How many emergency exits on the B-737 800
2-cock pit sliding windows
2 fwd pax entry and catering
4 overwing exits
2 aft pax entry and catering
how many crash axes are on board?
1 - located in the cock pit
How many pax does the B-737 have?
Zone 1: 87
Zone 2: 102
how many flight crew?
how many crewmembers?
4 flight attendants
how many cargo areas on the B-737?
how many megaphones on the B- 737?
When did the Boeing 737 come into service?
How many oxygen systems on board ?
1 cockpit oxygen system
2 pax oxygen system
where is the Boeing headquarters located?
100 north riverside plaza. Chicago, Illinois
What are the primary flight controls B 737?
Elevators, ailerons and Rudders (EARS)
What do the elevators control?
What do the rudders control?
What do the ailerons control?
Name the secondary flight controls?
flaps, leading edge devices (LEDs) and spoilers.
What do LEDs consist of?
4 inboards flaps and 8 slats
What do the flaps and the LEDs do?
Create lift during take off and landing
Are the spoilers used during take off?
NO; because they destroy life. But they can used during aborted takeoff
What do the spoilers do in- flight?
They destroy lift- enabling descent.
What is the max speed to use spoilers in-flight?
What is the function of yaw dampers?
The prevent the "Dutch roll" while in flight
What is the maximum Mach # of the B- 737?
What is the maximum operating altitude of the B-737?
41,000 ( service ceiling )
what is the maximum tail wind component for takeoff and landing with the B-737
what is the maximum field elevation for takeoff and landing with the B 737?
8400 ft (Pressure ALT)
What are the minimum and maximum operating temperatures for the B 737 ?
max +54 degrees Celsius
min - 54 degrees Celsius
What are the maximum crosswind components for landing the B737?
Normal operations: 33 knots (36 knots without winglets)
Can the APU be used during flight on the B 737?
What is the Runway slope limitation for the B737?
+/- 2% (10,000 feet runway and 1% slope- Runway 100 feet higher (field elevation) or lower from one end of the runway to the other end
What is the maximum structural takeoff weight of the B737?
What is the max taxi weight ?
174,700 lbs (avg taxi 500 lbs)
What is the maximum landing weight of the B 737?
What is the maximum zero fuel weight of the B737?
How is Zero Fuel Weight determined?
Everything but, the fuel. Basic operating weight + payload
What is the basic operating weight of the B737?
96,100 lbs (aircraft, flight crew, flt alt, catering)
How many hydraulic systems are there on the B737?
3 - A system, B system, and the Standby system
How many and what kind of pumps does the A hydraulic system use?
2 hydraulic pumps, 1 engine and 1 electrical
Which engines have hydraulic pumps?
Engine 1 and Engine 2
how many and what kind of pumps does the B hydraulic system use?
2 hydraulic pumps, 1 engine and 1 electrical
How many and what kind of pumps doe the Standby hydraulic system use?
1 electric pump
Name everything on the System A Hydraulic system?
Alternate manual brakes
Nose wheel steering
Inboard flight spoilers
Number 1 thrust reversers
Name everything on the B hydraulic system?
Hint: YEAR OF BALLAN
LEDs ( Leading Edge Devices)
Landing Gear (Retract only)
Alternate nose wheel steering
Number 2 thrust reversers
Name everything on the Standby hydraulic system?
Standby Yaw damper
Number 1 and 2 Thrust reverser (very slow)
Is there a backup to nose- wheel steering?
If the A hydraulic system is lost, can the landing gear be lowered on the B 737?
Yes, the landing gear can be cranked up until the locking mechanism releases allowing the landing gear to free fall to the down and locked position.
If the A hydraulic system is lost on the B 737, can the landing gear be raised?
If the A hydraulic system is lost, is there a backup to the ailerons and elevators on the B 737?
Yes, on the B hydraulic system
If both the A and B hydraulic system are lost, is there a backup for the ailerons and elevators on the B-737?
Yes, and it is called manual reversion. It is a system of wire cables that run from the cockpit out to the control surface.
Is there a back up for the flaps on the B-737 if the B hydraulic system is lost?
Yes, electric flaps
Is there a backup for the LEDs on the B 737 if the B hydraulic system is lost?
Yes, the Standby hydraulic system
Is there a backup for the inboard and outboard spoilers if hydraulics are lost on the B 737?
No, the spoilers do not have a backup
Is there a backup to the rudder on the B737 if the A hydraulic system is lost?
The rudder can be run by all three systems
Which system supplies hydraulic power to the brakes?
The B system
If the B hydraulic is lost, is there a backup to the brakes?
Yes, there are two backup for the brakes. There is the brake interconnect that ties the brakes to the A system, and then there is a brake accumulator bottle
What is the normal operating pressure for all three hydraulic systems?
Is the loss of a hydraulic system considered an emergency?
What is the most common cause of hydraulic system failure?
A leak in the reservoir or a ruptured hydraulic line
How many electric generators are there on the B 737?
3 total- 2 engine driven and 1 APU driven generators
How many power sources are available on the ground while parked at the gate for the B737?
6 total- 2 engine generators, 1 APU generator, 2 batteries and the external power plug
While in flight, how many power sources are available for the B737?
5- 2 engine generators, 2 batteries and the APU
What kind of battery does the B 737 have?
The B 737 has a 24-Volt Nickel-Cadmium battery. It also has an auxiliary battery that increases the time available on the battery power.
What does IDG stand for?
Integrated Drive Generator
Explain what an IDG does.
An Integrated Drive Generator maintains a constant 12,000-rpm on a generator regardless of an engine's power setting.
How is electrical power distributed by the generators on the B 737?
All 3 generators (2 engine drive, 1 APU driven) provide power to the Synch bus. All of the power needs of the aircraft come off the synch bus. If 1 generator is online, (connected to then Synch Bus) it is providing 100% of the power needs to the aircraft. If 2 generators are online, they share the load 50/50
If both electrical generators are lost while enroute in a B737, how long is the battery good for?
60 minutes (30 mins primary battery +30 mins auxiliary battery)
Can the B737 be dispatched with an electrical generator inoperative?
You always check the MEL first for this information, and it says yes in some cases.
How can you convert AC to DC power on the B-737?
Control circuits and DC loads are supplied by Transformer Rectifier (TR) units, which converts AC to 28 Volt DC.
How can you convert DC to AC power on the B-737?
You can take power from the battery (DC 24 Volt) through static inverter, which converts DC to 115-volt AC
Can you use a regular appliance (vacuum-cleaner, etc.) from your house and use the regular 115- volt DC from the B 737?
No, The B 737 uses the 3 phases 115 volt 400hz engine driven generators. Your household appliances use a lower Hz (50-60 Hz)
How many fuel tanks does the B737 have?
3- left, center, right. Some models have an additional 4th auxiliary tank installed
How much fuel does each tank hold on the B 737?
Wings: hold 9,100 lbs each
Center: holds 30,500
Total available 48,700
What is the maximum planned imbalance between the wing tanks?
none. 1,000 lbs inflight unplanned
Is there an order to filling the tanks on the B737 while fueling?
Yes, wings tanks must be full before adding fuel to the center tank.
How many electric fuel boost pumps doe the B737 have?
6 (2 in each fuel tank (forward and aft)).
If all 6 electric fuel boost pumps went inoperative on the B 737, would the engines still continue to run?
Yes, each engine has its own engine- driven fuel pump.
Does the B 737 have a fuel dump system?
What is the maximum dump rate per minute with all of the fuel boost pumps working on the B 737?
The B 737 cannot dumb fuel. It can only burn up the fuel or make an overweight emergency landing.
Can fuel be transferred from tank to tank while in flight on the B 737?
No (but you can cross-feed to keep the balance)
Which fuel tanks normally feed which engines on the B737?
left wing feeds the left engine and the right wing feed the right engine.
Can any fuel tank feed any engine, or any combination of engines on the B737?
Yes, because of the cross feed manifold
How is the B737 pressurized?
The B737 uses air conditioning/pressurization system to pressurize the aircraft
How many air conditioning packs are on the B737?
2- The left hand pack and the right hand pack
How many outflow values are there on the B737?
1 main outflow valve -plus- 1 overboard exhaust valve, 2 pressure relief valves, and 1 negative pressure relief valve.
Explain how the pressurization system on the B737 works.
Hot bleed air is taken from the engines the left hand and right hand air conditioning packs. The bleed air then enters the pack(s), goes through the 2 compressors where it is cooled. This cold air is then mixed with hot by-pass air to get the temperature correct. The conditioned air then enters the aircraft cabin and cockpit where it pressurizes the aircraft. The air is then allowed to escape from the aircraft at a controlled rate through the outflow valve.
Which outflow valve can be manually closed on the B737?
The main outflow valve can be closed if necessary
Which cargo area is heated and carries live animals in the B737?
the forward cargo area
What is the maximum altitude with 1 air conditioning pax inoperative for the B 737?
What is the maximum altitude that the B737 may operate at if both air conditioning packs are lost while enroute?
14,000 feet check the afm
What is the maximum altitude that the B737 may be dispatched to fly at if both air conditioning packs are inoperative prior to the flight departing?
10,000 feet always check the MEL
Is it possible to dispatch the B737 with 1 or both air conditioning packs inoperative?
Yes, but always check the MEL first. There will be a penalty
Which engines provide bleed air to the packs on the B737?
Engines 1 and 2
Where are the air conditioning packs located on the B737?
In the belly of the aircraft, just forward of the main landing gear
Can the APU be used to pressurize the aircraft?
How many anti ice systems does the B737 have?
2 total: Bleed air and electrical
Name everything that is electrically anti iced on the B737.
Pitot Tubes, Temp. Probs, Alpha vane Anti ice system, Windows- Windshield- doors, water and toilet drain Anti ice system
Can the B737 be dispatched into known or forecast icing conditions?
Yes, but only into light or moderate icing if dispatcher and pilot agree it is safe, but never severe icing.
Name everything which is pneumatically (hot bleed air) anti-iced on the B737?
Engine 1, and 2 ( engine cowlings, nose dome bullet, and inlet guide vanes,), and the Wing Thermal Anti-Icing system).
Which engines provide hot bleed air to the wing anti-ice system on the B737?
Engines 1 and 2
When do icing conditions exist on the ground and in-flight according to Boeing?
When the temperature is 10C (50F) and below and there is visible moisture.
With engine anti-ice on for takeoff, is there a takeoff weight penalty with the B737?
Yes, performance decreases with engine anti-ice on
Why are the antennas anti-iced on the B737?
To prevent ice from building up and breaking off, this could fly back into the engines or damage the fuselage or any control surfaces.
Which part of the wing is anti-iced on the B737?
Only around the leading edge devices (LEDs)
Is wing anti-ice ever used for takeoff on the B737?
No, it automatically shuts off if take-off power is detected
Is engine anti ice ever turned on for takeoff on the B737?
Yes, when icing conditioned exist for takeoff, it must be on. (Remember, there is a take off weight penalty with this.)
What is the major function of windshield heat?
Bird Strike protection
How does windshield heat work?
When the windshield is heated it becomes more flexible, so if a bird hits it the glass will not shatter.
When is windshield heat used?
Anytime the aircraft is below 10,000 feet, or icing conditions exist
If an anti-icing system is inoperative, can a flight be dispatched?
Always check the MEL first. It essentially says yes, but the pilot in command and flight dispatcher must both agree that the flight will not be dispatched into known or forecast icing conditions. Remember that clouds are considered visible moisture.
Does the B 737 have de-icing capability?
Which engines provide bleed air to the engine anti-ice system on the B737?
Each engine provides bleed air to itself
How many engines are on the B 737?
2 engines plus the APU
How much thrust does each engine produce on the B737?
26,400 lbs of thrust
Who makes the engines on the B737 and what model are they?
General Electric- CFM56, 7B24
What does A.P.U. stand for?
Auxiliary Power Unit
What is the function of the APU?
The APU provides bleed air for the air conditioning pack, electrical power, and engine start.
Which fuel tank normally fuels the APU on the B737?
Where is the APU located on the B737?
In the tail section of the airplane
Which cockpit instrument measures the amount of thrust that each engine is producing?
The EPR (Engine Pressure Ratio) gauge
How is the APU started?
With electrical power from the battery or an external source
How do jet engines work?
(suck-squeeze-bang-blow) The engine fan takes air into the engine. The air then goes through 2 compressors where it is compressed. This air then enters the combustion chamber where fuel and ignition are added, and combustion takes place. As the air (now thrust) exits the engine, it is blown over turbine blades , causing them to spin. The turbine blades are attached to a shaft which runs up to the front of the engine, turning the fan.
Which areas of the B737 have fire detectors?
Engines, APU, Lavatories, landing gear wheel-wells, cargo area
Which areas of the B737 have fire extinguishers?
2 engines, cargo (they share 1 bottle), APU and 3 lavatories
If a fire develops in the wheel-well, how can it be extinguished?
By lowering the landing gear and allowing the airflow to blow it out.
Do the cargo areas of the B737 have fire detectors or extinguishers?
Yes, they share one bottle that can be directed to either cargo area.
How many fire extinguishers bottles are there total for the 2 engines on the B737?
2. Both bottles can be used on one engine if necessary, through a loop system
Does the APU on the B737 have its own fire extinguisher bottle?
How many hand-held fire extinguishers are in the passenger cabin of the B737?
6 Bottles total- 3 Halon bottles and 3 water bottles
how many passengers exits does the B737 have?
2. Both are on the port side
what does the tail skid do?
It extends from the tail section of the aircraft in the down position for takeoff and landing (any time the landing gear is down). It protects the aft part of the aircraft from damage in the event the pilot over rotates the aircraft in takeoff and the aft section of the aircraft actually strikes the runway.
What does the anti-skid system do?
The anti-skid system compares wheel rotation speed when brakes are applied during landing or during and aborted takeoff. If one of the wheels goes slower then the other(s), the anti skid system senses it, and releases the hydraulic pressure to the wheel-brake, and allows the wheel to spin up to same speed as the other(s), thus preventing skidding
If the anti-skid system is inoperative, is it possible to dispatch the B737?
Always check the MEL first., there are massive takeoff and landing weight penalties associated with an inoperative anti-skid system, as a result, it should be fixed.
How many pitot-static systems does the B737 have?
How many barometric altimeters does the B737 have?
What are the 3 pitot-static system instruments on the B737?
1. The airspeed indicator (gives indicated speed)
2. The vertical speed indicator (VSI) gives rates of climb/descent in FPM
3. The Altimeter (gives height above mean sea level)
Name the 2 gyroscopic instruments on the B737?
1. The directional gyro (DG) -gives heading
2. Attitude indicator (gives pitch and roll information)
What does VSI (or VVI) stand for and what information does it give a pilot?
Vertical speed indicator or (Vertical velocity indicator), give the pilot rate of climb and rate of descent in feet per minute
What is a radar altimeter?
it give the pilot the exact altitude above the ground below the aircraft
What does CDI stand for and what information does it give the pilot?
CDI stands for Course Deviation Indicator and tells the pilot if they are left or right of course
What does DG stand for and what information does it give the pilot?
DG stands for Directional gryo and it gives the pilot heading information.
What does HSI stand for and what information does it give a pilot?
HSI stands for Horizontal Situational Indicator and it gives a pilot VOR, ILS, DME, and heading information and it is a primary aircraft attitude instrument
What does RMI stand for and what information does it give a pilot?
RMI stands for Radio Magnetic Indicator, and it points towards 2 VORs or 2 NDBs.
What does HDI stand for and what information does it give a pilot?
HDI stands for Horizontal Deviation Indicator and it gives a pilot VOR, ILS, DME, heading, pitch, and roll information and it is a primary aircraft attitude instrument. (think of it as a deluxe HSI)
What does the EFIS stand for and what is it?
Electronic flight instrument system (also called glass cock pit)
What is weather radar used for?
It uses radar to indicate precipitation, and it allows pilots to deviate around thunderstorms. The pilot must avoid severe thunderstorms vertically by 100 feet for every 10knots of surface wind and horizontally by 20nm.
Is it possible to dispatch a B737 into areas of known or forecast thunderstorms?
Yes, as long as the weather radar is operating and the thunderstorms are not forecast to be severe. Scattered or broken area of thunderstorms are permissible, since the pilot can deviate around them.