Glossary of Terms

	Title	Definition
	Bunt	Sudden nose down maneuver of aircraft, usually producing uncomfortable negative G.
	CAM	Cockpit Area Microphone.
	Candidate Certification Maintenance Requirements (CCMR).	A periodic maintenance or flight crew check may be used in a safety analysis to help demonstrate compliance with JAR 25.1309(b) for Hazardous and Catastrophic Failure Conditions. Where such checks cannot be accepted as basic servicing or airmanship they become Candidate Certification Maintenance Requirements (CCMRs) (AMC to CS25.1309] Note: AMC 25.19 defines a method by which Certification Maintenance Requirements (CMRs) are identified from the candidates. A CMR becomes a required periodic maintenance check identified as an operating limitation of the type certificate for the aeroplane.
	CAST	Commercial Aviation Safety Team
	CAT	Clear Air Turbulance
	CDU	Control/Display Unit.
	Certification	Certification means the legal recognition by the certification authority that a product, service, organisation or person complies with the applicable requirements. Such certification comprises the activity of technically checking the product, service, organisation or person and the formal recognition of compliance with the applicable requirements by issue of a certificate, license, approval or other documents as required by national laws and procedures. In particular, certification of a product involves: The process of assessing the design of a product to ensure that it complies with a set of standards applicable to that type of product so as to demonstrate an acceptable level of safety. The process of assessing an individual product to ensure that it conforms with the certified type design. The issue of any certificate required by national laws to declare that compliance or conformity has been found with standards in accordance with items (a) or (b) above [ARP4754] Certification is the end result of a qualification process. It is the act whereby the design, manufacture and engineering quality of a product is endorsed. It entails the legal recognition by the certification authority that a product, service, organization, or person complies with the requirements.
	Certification Check Requirment(CCR)	A recurring flight crew or ground crew Check that is required by design to help show compliance with JAR 25.1309(b) and (d)(2) by detecting the presence of, and thereby limiting the exposure time to, a significant latent failure that would, in combination with one or more other specific failure or events identified in a safety analysis, result in a Hazardous or Catastrophic Failure Condition.
	CFDS	Centralised Fault Display System.
	Check	An examination (e.g., an inspection or test) to determine the physical integrity and/or functional capability of an item [AMC to CS25.1309].
	Clean (aircraft)	Aircraft in normal cruising configuration, with high lift devices and undercarriage retracted.
	CMD	Command
	CMM	Capability Maturity Model The Capability Maturity Model (CMM) is a method for evaluating and measuring the maturity of the software development process of organizations
	CNS	Communication, Navigation, Surveillance
	Complex	A system is Complex when its operation, failure modes, or failure effects are difficult to comprehend without the aid of analytical methods [AMC to CS25.1309]. Applicable to systems whose architecture and logic are difficult to comprehend without the aid of analytical tools (e.g. FMEAs, FTAs, RBDs, etc) and whose safety cannot be shown solely by tests

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