Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 3825

e) environmental factors such as temperature and humidity. 23/11/06 ATT F-2 2007/70/II. szám Attac ment Annex 10 — Aeronautical Communications 1.3 Facility availability 1.3.1 Availability, as a percentage, may be expressed in terms of the ratio of actual operating time divided by specified operating time taken over a long period. Symbolically, Actual time operating (100) A = Specified operating time Duration of equipment operation – hours (t) Probability of survival (P ) (per cent) S 1 000 m = 5 000 hrs m = 2 000 hrs m = 1 000 hrs m = 500 hrs m = 333 hrs m = 250 hrs m = 100 hrs m = 167 hrs P = Probability of survival t = Duration of operation m = MTBF S Figure F-1. Plot of s = 100 e t/m ATT F-3 23/11/06 2007/70/II. szám Annex 10 — Aeronautical Communications Volume I For example, if a facility was operating normally for a total of 700 hours during a 720-hour month, the availability for that month would be 97.2 per cent. 1.3.2 Factors important in providing a high degree of facility availability are:

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