Glossary - Letter B

If you wish to find a term by name, please click the relevant letter below to be taken to a list.

 

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | XYZ

B

 

back |verb| (of the wind ) to change direction in an anticlockwise direction. Opposite: veer

 

back course |noun| a procedure when a reverse ILS localizer signal can be used for an approach

 

backtrack |verb| having landed on the runway in use, to turn 180° and proceed along the runway in the opposite direction or having entered the runway lower down, to taxi to the end of the runway and turn 180° in order to have a longer take-off run. / Backtrack Runway 27R. /

 

backup |adjective|,|noun| a second or third system, instrument or computer disk available to be used if the first one fails / The backup system or the backup failed as well. Backup generators are driven by the engine. /

 

backward |adjective| directed towards the back / a backward movement /

 

backwards |adverb| towards the back / Unlike most aircraft, the C130 can move backwards using its own power. / (NOTE: The US English is backward.)

 

backwash |noun| a backward flow of air produced by an aircraft propeller or jet engine

 

baffle |noun| a metal plate for preventing the free movement of sound or liquids / Integral fuel tanks can be strengthened by fitting baffle plates. /

 

baggage |noun| luggage, cases and bags which you take with you when traveling / One passenger had a huge amount of baggage. She lost one piece of baggage. / (NOTE: The word luggage is also used in British English.) - baggage hall > an area where arriving passengers pick up their baggage - carry-on baggage > small bags of limited size and weight that passengers are allowed to take with them into the cabin of an aircraft

 

baggage allowance |noun| the weight of baggage each air passenger is allowed to take free / There is an accompanied baggage allowance of 18 kilos. /

 

baggage cart |noun| small towed vehicle for transporting baggage

 

baggage handling |noun| the process by which passengers’ baggage is loaded onto an aircraft, or unloaded and moved to the airport terminal

 

balance |noun|  1. a state in which weight, force or importance are evenly distributed / The propelling nozzle size is extremely important and must be designed to obtain the correct balance of pressure, temperature and thrust. / 2. the act of staying steady - |verb| 1. to be opposite and equal in weight, force or importance to something else / The pressure exerted by the weight of the atmosphere above the level of the bowl balances a column of mercury in the tube. / 2. to stay steady, especially when resting on the center of gravity ‘…balance refers to the location of the center of gravity along the longitudinal axis of the aircraft’

 

ball |noun| in an inclinometer, the round object which indicates if a turn is coordinated - to step on the ball > to correct a skid or a slip by putting pressure on the rudder on the side to which the ball in an inclinometer has moved during a turn. If the ball has moved to the left, the turn can be corrected by putting pressure on the left rudder, and vice versa.

 

balloon |noun| a large bag inflatable with hot air or gas to provide lift, but without power / Balloons are sent into the upper atmosphere to collect information useful to meteorologists. /

 

BALPA |abbreviation| British Air Line Pilots Association

 

band |noun|  1. a narrow strip / A jet stream is a narrow band of high-altitude strong winds. / 2. a range of numbers or frequencies between two limits within a radio system

 

bandwidth |noun| the width of a band of radio frequencies / The sharp setting means the bandwidth is reduced to one kilohertz to minimize noise or interference. /

 

bank |verb| (of an aircraft) to rotate or roll around its longitudinal axis to a particular angle / Stresses are increased when the aircraft banks, turns or pulls out of a dive. / |noun| (of an aircraft) a rotating or rolling movement around its longitudinal axis to a particular angle / An attitude indicator gives the pilot pitch and bank information. /

 

bar |noun|  1. a long, straight, rigid piece of metal / The part is made from a solid bar of aluminum. / 2. (in meteorology) a unit of atmospheric pressure equal to 1,000 millibars. /

 

barograph |noun| an instrument for measuring and recording atmospheric pressure / The most common type of barograph is that which utilizes an aneroid capsule mechanically connected to a pen. /

 

barometer |noun| an instrument for measuring the atmospheric pressure

 

barometric |adjective| referring to a barometer - barometric pressure > atmospheric pressure as indicated by a barometer

 

barometric tendency |noun| the amount of change in pressure with increase in altitude

 

barrel roll |noun| a maneuver in which an aircraft turns completely over sideways while flying along

 

barrier |noun|  1. something such as a wall that prevents the movement of something else / Elevation of the ground over which the aircraft flies can be a dangerous barrier to flight. / 2. something that prevents a person from making progress / His medical problems were a barrier to his successful completion of the course. /

 

base |noun| the bottom part or lowest part - |verb| to develop or develop something from something else / The operation of the auxiliary power unit is based on the gas turbine engine. The principle of vapor cycle cooling is based upon the ability of a refrigerant to absorb heat. /

 

base leg |noun| the part of the airfield traffic circuit flown at approximately 90° to the direction of landing, followed by the final approach.

 

base turn |noun| a specified outbound track followed by a turn of more than 180° to intercept the inbound track

 

basic |adjective| referring to the most important but often simplest part of something, from which everything else is derived / This chapter provides a basic understanding from which the study of meteorology can develop. / - basic principle > a central or fundamental idea or theory

 

basic area navigation |noun| a standard of performance for navigation that requires an aircraft to remain within 5 nautical miles of the center line of its course for 95% of the time

 

basis |noun| the central and most important part of something from which everything else is derived / The basis of air navigation is the triangle of velocities. / (NOTE: The plural form is bases.)

 

bat |noun| an object shaped like a table-tennis bat used by a person on the ground to guide an aircraft when it is taxiing or parking

 

batsman |noun| somebody who uses a pair of bats to guide an aircraft when it is taxiing or parking

 

battery |noun| a chemical device that produces electrical current / This piece of equipment is powered by 2 batteries. /

 

bay |noun|  1. a space or area in the structure of an aircraft where equipment can be located / To avoid damage to the wheel bay, the nose wheel must be aligned in a fore and aft direction during retraction. / 2. a part of the coast that curves inwards

 

bayonet fitting |noun| a means of attaching something to something, in which an object with two side pins is inserted into a L-shaped slot in another object on some light-bulbs / Magnetic chip detectors are of the bayonet type fitting and can be removed and replaced very quickly. /

 

beacon |noun| a light or radio signal for navigational purposes / If the aircraft turns towards the beacon, signal strength will increase. /

 

beam |noun|  1. a long thick metal bar used as a support / A beam is designed with a breaking load of 12 tons but when a three ton load is applied repeatedly, the beam may fail. / 2. a shaft of light or radiation traveling in one direction, as from a car’s headlights / The electron gun produces a stream of fast-moving electrons and focuses them into a narrow beam. /

 

beam sharpening |noun| the process of making a radio or light beam narrower / Any system employing beam sharpening is vulnerable to side lobe generation at the transmitter. /

 

bear |verb| 1. to carry or to hold / The undercarriage has to bear the weight of the aircraft on the ground. / - rain-bearing cloud > a cloud carrying moisture which can fall as rain  2. - to bear something in mind > to keep in mind - it should be borne in mind > it should be remembered - bearing in mind > considering / Bearing in mind that she hadn’t flown for three weeks, the student pilot’s landings were very good. / 3. to be able to deal with something without becoming distressed or annoyed / He can’t bear the noise. / (NOTE: bearing – bore – borne) - he can’t bear the heat > the heat is too much for him

 

bearing |noun| 1. the angle, measured in a clockwise direction, of a distant point, relative to a reference direction / To plot a position line from the non-directional radio beacon, it is first necessary to convert the relative bearing to a true bearing and then calculate the reciprocal. / 2. a device containing steel balls or needles which allows free rotation of one component around another

 

Beaufort scale |noun| scale from 1–12 used to refer to the strength of wind / Wind speeds can be estimated by using the Beaufort scale of wind force. /

 

BECMG |abbreviation| becoming (METAR) / BECMG 0812/0815 21015KT PROB30 /

 

belligerent |adjective| aggressive, rude, provocative, violent / The cabin crew are dealing with some very belligerent football fans who are abusing other passengers. /

 

belly flop |noun| same as belly landing

 

belly landing |noun| an emergency landing of an aircraft when the wheels have not come down

 

below minima / minimums |preposition| being below the limits of vertical and horizontal visibility for which the airport, aircraft and crew are certificated

 

belt |noun| 1. a long, relatively narrow area - high-pressure belt > long narrow area of high pressure - precipitation belt > a long narrow area of rain, snow or hail - rain belt > long narrow area where rain falls / The cirrus cloud can be 900 miles ahead of the surface front with a rain belt as wide as 200 miles. /  2. a loop of strong material connecting two pulleys or wheels, one driving the other

 

belt conveyor |noun| baggage loader with rotating rubber belt used to load the bulk cargo compartment

 

belt-driven |adjective| (of a wheel) moved by a belt linked to another wheel which, in turn, is moved by a motor or an engine / Aircraft generators are belt-driven or shaft-driven. /

 

belt-driven generator |noun| a generator whose pulley is turned by a belt attached to an engine-driven pulley

 

bend |noun| a curve - |verb| to curve from a straight shape (NOTE: bending – bent) - to bend downwards > to curve down from a horizontal position - to bend upwards > to curve up from a horizontal position / The wings support the weight of the aircraft and they bend upwards in flight. /

 

bending load |noun| a load that causes a structure to bend

 

Bernoulli’s principle |noun| - see lift

 

best practice |noun| technique, procedure or process regarded as most efficient and appropriate / All training should adopt best practice. /

 

beware |verb| to be careful or to watch out for / Beware of carburetor icing. Beware of other aircraft in the circuit. /

 

beyond |preposition| further away than / The radio horizon extends beyond the visible horizon. / - it is beyond his understanding > he cannot understand it at all, it is too difficult for him to understand

 

bi- |prefix|  1. two  2. twice

 

biannual |adjective| happening two times a year - biannual inspection > an inspection done twice every year

 

bill |noun| US same as note |noun| 4

 

bimetallic |adjective| made of two metals

 

bimetallic strip |noun| a strip made of two separate metals with different rates of expansion, joined together side by side so that when the strip is heated, it bends and makes, or breaks, electrical contact / Circuit breakers use a bimetallic strip as the sensing element. /

 

binary |adjective| referring to a number system used in computers that only uses the digits 0 and 1 / Logic gates work with binary data. Computers only process binary information. /

 

biplane, bi-plane |noun| an old aircraft design with two pairs of wings, one above the other / Most of the aircraft used in the 1914–18 war were biplanes. /

 

bird strike |noun| a collision between a bird or birds and an aircraft that is flying. Birds can hit the aircraft at different points. Effects will depend on the location of the impact and the size and number of the birds. The ingestion of large birds may cause engine stall or failure. Although windshields are tested for bird strikes, large birds can crack or break windshields impairing vision and affecting cabin pressurisation. The crew will need to make a precautionary landing.

 

BKN |abbreviation| broken

 

black box |noun| same as flight data recorder (NOTE: It is often called the black box, although it is not black.)

 

black-hole effect |noun| spatial disorientation and erroneous perception of altitude caused by a dark approach area and bright lights beyond the active runway


blade |noun| a flattened part of a propeller or rotor - blade tip > the end of the blade furthest from the center of rotation - turbine blade > a flat part in a turbine, which has an aerodynamic effect on the air

 

blade angle |noun| the angle between the blade axis and the axis of rotation / With a variable pitch propeller, the blade angle may be changed in flight. /

 

blade slip |noun| a loss of propulsive power from a propeller caused by the difference between geometric and effective pitch

 

blade twist |noun|  1. a reduction in propeller blade angle from root to tip 2. the unwanted variation in propeller blade pitch from root to tip caused by aerodynamic loads

 

blank |adjective|  1. with nothing written, printed or drawn on it / a blank sheet of paper / - a blank form > a form without the details filled in  2. (of a TV, computer or video screen) with nothing appearing on it / When he returned to his computer, the screen was blank. /

 

blast fence |noun| long barrier which diverts efflux behind parked or taxiing aircraft / Blast fences are often installed between the aircraft stands and the terminal buildings. /

 

bleed air |noun| compressed air from the engine compressor used for cabin pressurization or to drive other services / Bleed air from the right engine can power items normally powered by the left engine. /

 

bleed screw |noun| a small screw in highest point of a hydraulic system to allow for the removal of air or vapor

 

blind spot |noun| a point on a radar screen where information is not displayed or an area outside the aircraft hidden from the pilot by the airframe

 

blind transmission |noun| a transmission from one station to another in a situation where two-way communication cannot be established but where it is believed that the called station is able to receive the transmission

 

block |noun| a large mass of something - |verb|  1. to prevent something such as a fluid from passing freely through a pipe or channel / At high altitude, any water condensing out of the fuel could freeze and block the filters. /  2. to prevent a course of action /The government blocked attempts to prevent the building of the new airport./

 

blocked transmission |noun| a transmission that fails to get through, typically because of a technical fault

 

blockage |noun|  1. a collection of something blocking a pipe, narrow channel, filter, etc. / Ice crystals may form to cause a blockage of the fuel filter. / 2. the state of being blocked / The blockage was caused by ice. /

 

blow |noun| 1. an impact / a blow on the head / 2. a disappointment / The news of her failure in the examination was a severe blow. / - |verb| 1. (of the wind or air) to move / The sea breeze may blow almost parallel to the coast. / 2. (of a fuse) to break, as it should, when the circuit is overloaded (NOTE: blowing – blew – blown)

 

blow-back |noun| a sudden movement of fluid in the opposite direction to the general flow / A sudden release of pressure may cause a blow-back. /

 

blower |noun| a device for blowing air / Air for combustion is obtained from a blower. /

 

blow-out |noun| a tire burst / The blow-out left some rubber debris 600 meters from the threshold of Runway 17 Left. /

 

board |noun|  1. a flat, square or rectangular piece of wood or other material  2. - on board > on an aircraft / The flight plan records the call-sign and the number of people on board. / - |verb| to get on to an aircraft / In an emergency, many passengers only remember the entrance by which they boarded the aircraft. /

 

boarding gate |noun| the door through which passengers leave the terminal building to get on to an aircraft / Boarding gates 1 – 10 are on the left. /

 

boarding pass |noun| a temporary pass, issued at the check-in desk, which allows the holder to board the aircraft / Boarding passes must be shown at the gate. / (NOTE: The plural form is boarding passes.)

 

boarding steps |plural noun| stairs used by passengers and crew to get on board an aircraft / Passengers had to wait in the aircraft for 15 minutes before the boarding steps were put in position. /

 

boarding time |noun| the time when passengers are due to board the aircraft / Boarding time is at 13.30 hrs. /

 

body |noun|  1. the whole of a person or an animal  2. the main part of a person, but not the arms or legs  3. the main part of an aircraft, system, text, etc. / The body of an aircraft is also called the ‘airframe’. A flow-control valve consists of a body and a floating valve. /  4. a large mass of liquid or gas - body of air > a large quantity of air behaving in a particular way  5. an object / Acceleration is the rate of change of velocity of a body. /

 

bogged down |verb| stuck in the mud, damp earth or sand / A tug is required to tow the Regional Jet which is bogged down off Taxiway Lima. /

 

boil |verb| to heat a liquid until it reaches a temperature at which it changes into gas / Water boils at 100°C. / - boiling point > the temperature at which a liquid changes into gas / The boiling point of water is 100°C. /

 

bolt |noun|  1. a metal rod with a head, which screws into a nut / The two halves of the wheel are held together by bolts. /  2. - bolt of lightning > one electrical discharge of lightning - |verb| to attach with a bolt / Aircraft wheels are constructed in two halves which are bolted together. /

 

bomb scare |noun| threat or fear that there may be a bomb on a plane or on the ground

 

bomb warning |noun| a threat of a bomb on board or on the ground; a bomb scare. / Even bomb scares which do not seem credible have to be taken seriously and the aircraft must divert and land as soon as possible. /

 

bond |noun| the power that holds surfaces together, when they are joined using heat, cold, chemicals or glue / The deicing boot breaks the bond between the ice and the outer skin. / - |verb| to join surfaces together normally using heat, cold, chemicals or glue / The skin is bonded to the internal members by the redux process. /

 

boom |noun| in some aircraft, a spar that connects the tail to the fuselage

 

boost |noun| an increase or improvement / The improvement in a country’s economy often gives a boost to the airline industry. / - |verb| 1. to make or to help something increase / An oil pump boosts engine oil pressure. / 2. to increase / The instructor’s comments boosted the student pilot’s confidence. /

 

booster |noun| a device which increases the force or amount of something

 

booster pump |noun| a centrifugal pump often positioned at the lowest point of a liquid fuel tank to ensure positive pressure in the supply lines to the engine / Fuel is fed through a filter and a booster pump. The purpose of the booster pump is to prevent fuel aeration. /

 

boot |noun| one of a set of flat, flexible tubes bonded to the leading edge or wings and other surfaces which, when pressurized with fluid, break up ice / The boots on the leading edge of the wings were damaged by hail. /

 

bottleneck |noun| a buildup of air traffic causing delays in taking off or landing

 

bound |adjective| - bound for > on the way to / an aircraft bound for Paris / - the Copenhagen-bound flight > the flight on the way to Copenhagen - outward bound > leaving home, especially for another country

 

boundary |noun| a physical or imaginary limit between two areas / The boundary between two air masses is called the frontal surface. /

 

boundary layer |noun| the layer of fluid next to the surface over which it is flowing and, because of friction, traveling more slowly than layers further from the surface

 

bowser |noun| a mobile fuel tank for refueling aircraft / It is important to prevent the possibility of an electric spark by earthing the aircraft and the bowser. /

 

Boyle’s Law |noun| a scientific principle that states that the volume of a given mass of gas, whose temperature is maintained constant, is inversely proportional to the gas pressure

 

brace |verb| 1. to strengthen a construction using cross-members and/or wires / Early aircraft were of the braced type of construction. / 2. to take a protective body position in preparation for a crash landing / The cabin-crew will repeat the ‘brace’ order and brace themselves. / - to brace yourself > to quickly prepare yourself mentally and physically for what is shortly to happen

 

brace position |noun| the position that a person is recommended to adopt before impact in a crash, protecting the head with the arms and bringing the legs up underneath the chest

 

bracket |noun|  1. a metal support, often triangular or L-shaped - component bracket > a metal device to attach and support a component  2. a range of frequencies within a band of radio frequencies / Terminal VOR is in the frequency bracket 108–112 MHz. / 3. - round brackets > the printing symbol ( ) used to separate words in a sentence, or within a text - square brackets > the printing symbol [ ] used to enclose some types of text

 

brake |noun| a device for stopping a vehicle or a machine - parking brake > a brake used to prevent the aircraft moving after it has come to a stop - |verb| to slow down or to stop by pressing the brakes / He had to brake hard after landing in order to turn off at the correct taxiway. / (NOTE: braking – braked)

 

brake drum |noun| a round hollow part of the brake mechanism, which is attached to the wheel and against which the brake shoes rub, thus preventing the wheel from turning

 

braking |noun| the act of putting on the brakes to slow down or to stop - |adjective| slowing down / the braking effect of drag /

 

braking action |noun| a measure of likely adhesion of tires to the runway, braking efficiency, which can be characterized as ‘good’, ‘medium’ or ‘poor’

 

braking coefficient |noun| a measurement of braking efficiency based on the friction coefficient of the runway, i.e. if the runway surface is wet or icy, it will be slippery, there will be less friction and the braking coefficient will be low

 

break |noun| standard radio-telephony phraseology which indicates a separation between messages

 

breakdown |noun| failure, disintegration, collapse / Radio malfunction and inadequate language proficiency can both result in a breakdown in communication. /

 

breaking load |noun| a load capable of being supported before a structure breaks

 

breather |noun|  1. a pipe connecting the crankshaft to the atmosphere to prevent build-up of crankcase pressure  2. a short rest (informal) - to take a breather > to have a short break, to relax before starting again

 

breeze |noun| a gentle wind especially near the coast / There’s no wind, not even a breeze. / - land breeze > a light wind which blows from the land towards the sea / Land and sea breezes occur in coastal areas. / - sea breeze > a gentle wind which blows from the sea towards the land / The strength of the sea breeze decreases with height. /

 

brief |adjective| short - brief visit > a visit that lasts only short time - brief letter > a letter containing only a few words - |noun| general instructions to enable somebody to perform their duties / The inspector’s brief is to find out as much as possible about the causes of accidents. / - |verb| to give basic information to somebody / Before take-off, cabin crew must brief passengers on the location and use of emergency exits and life jackets. /

 

briefing |noun| a short meeting to enable instructions and basic information to be given

 

bright |adjective| with intense light / The lights can be set to BRT (bright) or DIM. If the runway lights are too bright they can cause glare. /

 

British Isles |plural noun| the islands which make up Great Britain and Ireland / The climate of the British Isles is affected by the Atlantic Ocean. /

 

British thermal unit |noun| the amount of heat needed to raise the temperature of one pound of water by one degree Fahrenheit. Abbreviation: Btu

 

brittle |adjective| having a tendency to break easily, like thin glass / Absorption of oxygen and nitrogen from the air at temperatures above 1,000° F makes titanium brittle. /

 

BRNAV |abbreviation| basic area navigation

 

broad |adjective|  1. very wide  2. wide or general / Three broad categories of aircraft are considered – rotary wing aircraft, light single-engine aircraft and twin-engine aircraft. / Opposite: narrow

 

broadcast |verb| to transmit, often to a large number of people, a radio signal or message which requires no answer / The cabin crew can use the public address system to broadcast messages to passengers only. / (NOTE: broadcasting – broadcast) - |noun| a transmission of information relating to air navigation that is not addressed to a specific station or stations

 

broadly |adverb| widely or generally - broadly speaking > generally speaking

 

broken |adjective| cloud cover of between 0.5 and 0.9 (i.e. 50% and 90%) of the sky / METAR KMWN 142255Z 32026KT 120SM BKN/// FEW180 SCT210 / Abbreviation: BKN

 

bruise |noun| a mark on the skin caused by a blow / Some passengers suffered minor cuts and bruises when the flight encountered turbulence. /

 

brush |noun|  1. a tool that has lengths of hair or wire fixed into a handle and is mainly used for painting or cleaning  2. a small, replaceable block of carbon which rubs against the surface of a commutator in a generator or electric motor / At high altitude, the air becomes drier and this causes a greatly increased rate of wear on the brushes. /

 

buckle |noun| a metal part of a belt used for joining the two ends together - |verb| to bend out of shape because of heat or force / Overheating will make the battery plates buckle. /

 

buffet |noun| a shaking movement of the aircraft caused by the break-down of the airflow over the upper surface of the wing / Large aircraft use a stick shaker to supplement the natural stall warning of buffet. / - |verb| to push around with great force, as by water or wind / The storm buffeted the coast. The aircraft was buffeted by strong crosswinds as it made its final approach to land. / (NOTE: Buffet is a warning to the pilot that the smooth airflow over the wing is breaking down and that he should take corrective action to prevent a stall.)

 

buffeting |noun| an irregular shaking of a part or the whole of an aircraft during flight, usually caused by strong winds

 

buffet speed |noun| the speed at which buffet is first noticed

 

bug |noun| a fault in computer software which causes the program to operate incorrectly

 

build up |verb| to form by accumulation / In icing conditions, ice builds up on the leading edges. / (NOTE: building up – built up)

 

build-up |noun| a gradual accumulation /a build-up of static electricity/

 

built-up |adjective| - built-up area > an area which is full of houses, shops, offices, and other buildings, and with very little open space

 

bulb |noun|  1. a glass ball inside a lamp that gives electric light / If a lamp does not work, the bulb may need replacing. /  2. something shaped like a lamp bulb / The most common type of hygrometer is the wet and dry bulb thermometer arrangement. /

 

bulk cargo |plural noun| cargo which is not placed in a container, but loaded into hold and maintained in position by nets

 

bulkhead |noun| a dividing partition across the structure of the fuselage separating one compartment from another for reasons of safety or strength / A fireproof bulkhead is provided to separate the cool area of the engine from the hot area. /

 

bulletin |noun| a short report or information on a situation / news bulletin, weather bulletin / - / A terminal aerodrome forecast bulletin may consist of forecasts for one or more aerodromes. /

 

bumpy |adjective| turbulent / We are having a bumpy ride at our present level. /

 

burble |noun| a break in the flow of air around an aircraft’s wing, which leads to turbulence

 

burst |noun|  1. a minor explosion caused by increased pressure / The risk of tire burst through overheating is increased by hard application of the brakes. /  2. a very short period of activity followed by no activity / The ground installation transmits a code in two short bursts. / - burst of energy > a very short period of energy - |verb| to explode because of increased pressure or puncture / Metal debris on the runway may cause a tire to burst. / (NOTE: bursting – burst)

 

busbar |noun| an electrical conductor used to carry a particular power supply to various pieces of equipment / Complex busbars are thick metal strips or rods to which input and output connections are made. /

 

busy |adjective| with a lot of activity and traffic movements / Beijing Capital is a busy airport. /

 

button |noun| a little round disc which you push to operate something, e.g. to ring a bell

 

Buys Ballot’s Law |noun| a rule for identifying low pressure areas, based on the Coriolis effect (NOTE: In the northern hemisphere, if the wind is blowing from behind you, the low pressure area is to the left, while in the southern hemisphere it is to the right.)

 

buzz |verb| to fly low in an aircraft over people or buildings, or to fly across the path of other aircraft

 

bypass |noun|  1. an alternative pipe, channel, etc. / A turbine bypass in the form of an alternative exhaust duct is fitted with a valve. /  2. same as shunt

 

bypass mode |noun| a condition in which an ILS transmitter circuit is shunted and is not transmitting an operational signal to approaching aircraft

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | XYZ
UTC | Zulu Time
 
Copyright © 2012 Roger. All rights reserved. | Sitemap
Make a Free Website with Yola.