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Proposed Target Date Target date for a CIP Objective proposed by the Project Leader for approval by the EATCHIP project Board (e.g. in case a direct link with ECAC Strategy time scale or an approved Eurocontrol Standard cannot be made, or in case significant feasibility problems are identified). Protected "Protected" airspace is that which has been defined as prohibited, restricted or dangerous or is in some other way eligible for protection by APW. Protocol A set of rules and formats (semantic and syntactic) which determines the communication behaviour between peer entities in the performance of functions at that layer. (ISO 8208 standard). Protocol Analysis The data analysis component of the verbal report method. An analysis of verbal reports of job performance or behaviour that includes a process of coding responses and behaviours in order to perform a content analysis or statistical analysis. Typically, the verbalisations or behaviours are segmented and analysed according to the types of strategies, goals, procedures use, knowledge required, etc. Protocol Control Information Information included in a layer header which contains service primitive specific to that layer. Protocol Data Unit A unit of data transferred between peer entities within a protocol layer consisting of protocol control information and higher layer user data (i.e., service data units). Pseudo Random Noise Code The identity of the GPS satellites as determined by a GPS receiver. Since all GPS satellites must transmit on the same frequency, they are distinguished by their pseudo random noise codes. Pseudo range The distance from the user to a satellite plus an unknown user clock offset distance. With four satellite signals it is possible to compute position and offset distance. If the user clock offset is known, three satellite signals would be sufficient to compute a position. Pseudolite A pseudolite (pseudo-satellite) is a ground-based GNSS augmentation which provides, at GNSS satellite signal-in-space frequencies, an additional navigation ranging signal. The augmentation may include additionally differential GNSS corrections. (Adapted from the FANS GNSS Technical Subgroup). Psychoactive Substances Psychoactive substances are: alcohol, opioids, cannabinoids, sedatives and hypnotics, cocaine, other psycho-stimulants, hallucinogens and volatile solvents; whereas coffee and tobacco are excluded. (Ref. ICAO Annex 1). Psychological Testing The measurement of some aspects of human abilities by standardised procedures consisting of carefully prescribed content, methods of administration, and interpretation. Tests are usually administered by qualified psychologists or specially trained staff according to professional and ethical principles. Psychometric Pertaining to the measurement of psychological characteristics such as abilities, personality traits, achievement, skill and knowledge (CDSEPT, 1996).