Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 3060

f) change of displacement sensitivity to a value differing by more than 17 per cent from the nominal value for the localizer facility. Note In selecting the power reduction figure to be employed in monitoring referred to in e particular attention is directed to vertical and hori ontal lobe structure (vertical lobing due to different antenna heights) of the combined radiation systems when two carriers are employed arge changes in the power ratio between carriers may result in low clearance areas and false courses in the off course areas to the limits of the vertical coverage re uirements specified in 3.1.3.11.2.1 Recommendation In the case of locali ers in which the basic functions are provided by the use of a two fre uency system the conditions re uiring initiation of monitor action should include the case when the DDM in the re uired coverage beyond plus or minus degrees from the front course line except in the bac course sector decreases below 3.1.3.11.3 The total period of radiation, including period(s) of zero radiation, outside the performance limits specified in a), b), c), d), e) and f) of 3.1.3.11.2 shall be as short as practicable, consistent with the need for avoiding interruptions of the navigation service provided by the localizer. 2007/70/II. szám C a ter Annex 10 — Aeronautical Communications 3 13 23/11/06 3.1.3.11.3.1 The total period referred to under 3.1.3.11.3 shall not exceed under any circumstances: 10 seconds for Category I localizers; 5 seconds for Category II localizers; 2 seconds for Category III localizers. Note The total time periods specified are never to be exceeded limits and are intended to protect aircraft in the final stages of approach against prolonged or repeated periods of locali er guidance outside the monitor limits For this reason they include not only the initial period of outside tolerance operation but also the total of any or all periods of outside tolerance radiation including period(s) of ero radiation which might occur during action to restore service for example in the course of consecutive monitor functioning and conse uent changeover(s) to locali er e uipment or elements thereof Note From an operational point of view the intention is that no guidance outside the monitor limits be radiated after the time periods given and that no further attempts be made to restore service until a period in the order of seconds has elapsed 3.1.3.11.3.2 Recommendation here practicable the total period under should be reduced so as not to exceed two seconds for Category II locali ers and one second for Category III locali ers 3.1.3.11.4 Design and operation of the monitor system shall be consistent with the requirement that navigation guidance and identification will be removed and a warning provided at the designated remote control points in the event of failure of the monitor system itself. Note uidance material on the design and operation of monitor systems is given in Attachment C 3.1.3.11.5 Any erroneous navigation signals on the carrier occurring during removal of navigation and identification components in accordance with 3.1.3.11.1 b) shall be suppressed within the total periods allowed in 3.1.3.11.3.1. Note To prevent ha ardous fluctuations in the radiated signal locali ers employing mechanical modulation e uip ment may re uire suppression of navigation components during modulator rundown 3.1.3.12 Integrity and continuity of service re uirements 3.1.3.12.1 The probability of not radiating false guidance signals shall not be less than 1 0.5 10 9 in any one landing for Facility Performance Categories II and III localizers. 3.1.3.12.2 Recommendation The probability of not radiating false guidance signals should not be less than in any one landing for Facility Performance Category I locali ers 3.1.3.12.3 The probability of not losing the radiated guidance signal shall be greater than:

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