C
- CAA
- Civil Aviation Authority of New Zealand
- CAAP
- Civil Aviation Advisory Publication (Australia)
- Cabin Baggage
- Hand luggage carried by air passengers
- CAO
- Civil Aviation Order (Australia)
- Carburettor
- A carburettor is a component used in a combustion engine to control and mix air and fuel entering the engine cylinders. The carburettor’s throttle valve, known as the butterfly valve, regulates the flow of the air/fuel mixture entering the engine cylinders.
- Cargo Manifold
- Shipboard piping assembly for loading and discharging liquid cargoes
- CARs
- Civil Aviation Rules
- CASA
- Civil Aviation Safety Authority (Australia)
- Catenary
- Overhead wire system supplying electric traction power
- CCTV
- Closed-circuit television
- Certificates (gliding)
- Glider pilot certificates of gliding achievement or training, such as the A and B certificates and the Qualified Glider Pilot Certificate, issued by GNZ under delegated authority from the CAA
- CFI
- Chief flying instructor
- CFIT
- An airworthy aircraft under the complete control of a pilot is inadvertently flown into terrain, water or an obstacle.
- Charter Party
- Contract between shipowner and charterer for vessel use
- Chilly bin
- A colloquial term for an insulated food container.
- Circuits
- The specified path to be flown by aircraft operating in the vicinity of an aerodrome
- Class C airspace
- In Class C airspace, visual flight rules (VFR) flights are separated from instrument flight rules (IFR) flights and receive traffic information in respect of other VFR flights.
- Clevedon
- Clevedon and Drury are designated visual reporting points for aircraft flying into Ardmore, to achieve geographical separation for inbound and outbound aircraft.
- Clevis fastener
- A clevis fastener is a U-shaped fastener that has holes at the end of the prongs to accept the clevis pin. It is screwed onto the ends of the latch block connecting rods.
- Cloud cover
- Cloud cover is measured in okta, a unit representing 1/8 of the sky. Cloud cover is estimated in terms of how many eighths of the sky are covered in cloud, ranging from 0 to 8 oktas. Scattered is 3–4 okta, broken 5–7 okta.
- Clutch shaft aft yoke
- The clutch shaft aft yoke connects to the intermediate flex plate.
- Coasted
- If a connection with an aircraft is lost, the ADS-B system calculates the likely position of the aircraft, based on its previous position, altitude and speed, and labels it as ‘coasted’ rather than received data for the purpose of predicting the location of the aircraft until a connection is re-established.
- Collective
- One of the flight controls used by a helicopter pilot to ‘collectively’ adjust the pitch angle of all main rotor blades at the same time to alter the amount of thrust/lift being produced.
- Collision
- An accident involving two vessels or vehicles
- Commercial glider operation
- A commercial glider operation is a flight for the carriage of passengers or goods for hire or reward.
- Concession
- A lease, licence, permit or easement granted under Section 2 of the Conservation Act 1987
- Conduct of the ship
- Directing the navigation and movement of the ship
- Confined area
- A ‘confined area’ is a site where the flightpath of a helicopter is limited by terrain and/or obstructions.
- Consignment Note
- Document for rail freight detailing the shipment and terms
- Conspicuity
- The quality of being noticeable or easy to see
- Containerisation
- System of transporting goods in standardised containers
- Control areas
- A controlled airspace extending upwards from a specified limit above the earth
- Control line
- In the context of a balloon, a rope of a specific colour, depending on its purpose
- Control Zone
- A block of controlled airspace extending from the surface of the earth to a specified upper limit. The upper limit of a control zone is usually the lower limit of a controlled area extending further upwards.
- Controlled rest
- Controlled rest is described in the Operations Manual Part A 10.13.4 and allows for an individual flight crew member to have a rest period of up to 30 minutes during a flight to improve levels of alertness.
- Cospas-Sarsat
- Cospas-Sarsat is an international satellite-based monitoring system that detects distress signals from emergency locator transmitters.
- Counter helm
- An opposing rudder to stop a vessel’s swing
- Coupler
- Mechanical device connecting railway vehicles
- CPL
- Commercial pilot licence
- CPL(G)
- Commercial glider pilot licence
- Crabbing
- A technique to compensate for a crosswind during flight to maintain a desired track over ground.
- Critical fuel
- The fuel quantity necessary to fly to an en-route alternate aerodrome considering, at the most critical point on the route, the most time-limiting failure; OCC Manual, Section 6.1, pg 69.
- CRM
- crew resource management
- Crosswind
- Wind direction from the side.
- Crosswind leg
- A flight path at right angles to the landing runway off its end
- Curfew
- Airport operating restrictions during specified hours
- CVR
- Cockpit voice recorder
- Cyclic
- The control which changes the pitch angle of the rotor blades individually during a cycle of revolution and as a result tilts the main rotor disc to control the direction and velocity of flight.
- Cyclicing away
- Moving the cyclic control, normally forward, to accelerate the helicopter