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- oca Tagairt Faofa ag an gCoiste Téarmaíochta, www.tearma.ie ;Faomhadh an téarma seo mar chuid de Thionscadal Lex
- ga
- oca
- en
2 thoradh
- TRANSPORT|air and space transport|air transport
- airde glanta constaicí Tagairt Faomhadh an téarma seo mar chuid de Thionscadal Lex
- ga
- obstacle clearance altitude | OCA
- en
- Sainmhíniú lowest altitude, referenced to mean sea level, above the elevation of the relevant runway threshold or the aerodrome elevation as applicable, used in establishing compliance with appropriate obstacle clearance criteria Tagairt COM-EN, based on:International Civil Aviation Organization. International Civil Aviation Vocabulary. CD-ROM edition. Doc 9713 - Second Edition. ICAO, Montreal 2002.
- Nóta Although the terms obstacle clearance altitude (OCA) and obstacle clearance height (OCH) [ IATE:29559 ] are often used interchangeably, please note that OCA is referenced to mean sea level, whereas OCH is referenced to the threshold elevation or in the case of non-precision approaches to the aerodrome elevation or the threshold elevation if that is more than 2 m (7 ft) below the aerodrome elevation.