Glossary Papakupu
Explanations of abbreviations and acronyms.
- Backing
- Moving in an anti-clockwise direction.
- Backtracking
- Backtracking refers to the procedure where an aircraft taxies along an active runway in the direction opposite to that being used for takeoff or landing.
- Balanced rudder
- 20–40% of the rudder blade is forward of the rudder stock
- Ballast
- Crushed stone supporting and stabilizing railway sleepers
- Ballast Water
- Water carried in ship tanks to improve stability
- Balloon
- A balloon includes an envelope, control lines, burners, a basket and other equipment fitted or required to be carried
- Barely readable
- “Barely readable” is an assessment on the legibility of a transmission
- BARS
- Basic Aviation Risk Standards (Flight Safety Foundation)
- Base leg
- A flight path at right angles to the landing runway off its approach end. The base leg extends from the downwind leg to the intersection of the extended runway centreline
- Basic weight
- Weight of the airframe and engines, fixed equipment and full oil tanks but not including fuel, passengers or baggage and cargo
- Beech
- The aircraft was manufactured by Beech Aircraft Corporation and is nominated as Beech in ICAO documentation. However, sometimes Beech aircraft are referred to as Beechcraft, a subsequent branding from the same manufacturer.
- Berth
- Designated location in a port where a vessel docks
- Berthing Plan
- Schedule and allocation of berths for arriving vessels
- BFR
- Biennial Flight Review
- Bill of Lading
- Negotiable sea transport document acknowledging receipt and contract of carriage
- Bird strike
- Bird strikes involving collisions with multiple birds are much more likely to cause serious risk or harm to the aircraft.
- Bladder fuel tank
- A fuel tank with a flexible bladder in an aluminium enclosure that has the ability to change shape without splitting open and spilling its flammable content
- Block
- Section of railway track with movement authority for a single train at a time
- Blue fit test
- During a blue fit test, the tapered surface of the pintle is coated in a blue fluid. The pintle is then hydraulically inserted into the taper of the lower casting, then removed. The amount of fluid transferred to the surface of the taper in the lower casting shows the percentage of surface contact between the two items.
- BOL
- Block of Line
- Bonding wires
- Used to create an electrical connection between two or more conductive parts. They are commonly used in grounding, electrical enclosures and electronic components.
- Breakbulk
- Cargo shipped as individual pieces rather than in containers
- Breakwater
- Structure protecting a harbour from waves
- Bridge Resource Management
- Teamwork and communication practices on a ship's bridge
- Brinel
- Bearing brinelling is permanent damage to the bearing raceways, caused by contact forces that exceed the material limit.
- Brittle overload
- The sudden fracture of a material when stresses exceed its load-bearing capacity.
- Broadcast storm
- A broadcast storm occurs when a network system is overwhelmed by continuous multicast or broadcast traffic.
- Broken cloud
- Five- to seven-eighths’ cloud cover
- Bulk Cargo
- Cargo in large quantities unpackaged such as grain ore or coal
- Bulk carrier
- A ship designed to carry loose cargo such as grains, coal and logs.
- Bulwarks
- Solid handrails.
- Bushing
- A cylindrical sleeve that facilitates rotational movement between two parts.
- BVLoS
- Beyond visual line of sight