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- Q154429 subject Q8877980.
- Q154429 abstract "In aviation a ground-controlled approach (GCA), is a type of service provided by air-traffic controllers whereby they guide aircraft to a safe landing, including in adverse weather conditions, based on primary radar images. Most commonly a GCA uses information from either a Precision Approach Radar (PAR, for precision approaches with vertical, glidepath guidance) or an Airport Surveillance Radar (ASR, providing a non-precision Surveillance radar approach with no glidepath guidance). The term GCA may refer to any type of ground radar guided approach such as a PAR, PAR without glideslope or ASR. When both vertical and horizontal guidance from the PAR is given, the approach is termed a precision approach. If no PAR glidepath is given, even if PAR equipment is used for lateral guidance, it is considered a non precision approach.".
- Q154429 thumbnail SH-3A_of_HS-4_makes_first_GCA-landing_c1964.jpg?width=300.
- Q154429 wikiPageExternalLink v=onepage&q&f=true.
- Q154429 wikiPageWikiLink Q1327680.
- Q154429 wikiPageWikiLink Q151349.
- Q154429 wikiPageWikiLink Q1660756.
- Q154429 wikiPageWikiLink Q168246.
- Q154429 wikiPageWikiLink Q190200.
- Q154429 wikiPageWikiLink Q221395.
- Q154429 wikiPageWikiLink Q30.
- Q154429 wikiPageWikiLink Q362.
- Q154429 wikiPageWikiLink Q409022.
- Q154429 wikiPageWikiLink Q409037.
- Q154429 wikiPageWikiLink Q464020.
- Q154429 wikiPageWikiLink Q4652853.
- Q154429 wikiPageWikiLink Q47087.
- Q154429 wikiPageWikiLink Q4926627.
- Q154429 wikiPageWikiLink Q495186.
- Q154429 wikiPageWikiLink Q495924.
- Q154429 wikiPageWikiLink Q5569570.
- Q154429 wikiPageWikiLink Q654068.
- Q154429 wikiPageWikiLink Q7647051.
- Q154429 wikiPageWikiLink Q765633.
- Q154429 wikiPageWikiLink Q7834837.
- Q154429 wikiPageWikiLink Q8877980.
- Q154429 comment "In aviation a ground-controlled approach (GCA), is a type of service provided by air-traffic controllers whereby they guide aircraft to a safe landing, including in adverse weather conditions, based on primary radar images. Most commonly a GCA uses information from either a Precision Approach Radar (PAR, for precision approaches with vertical, glidepath guidance) or an Airport Surveillance Radar (ASR, providing a non-precision Surveillance radar approach with no glidepath guidance).".
- Q154429 label "Ground-controlled approach".
- Q154429 depiction SH-3A_of_HS-4_makes_first_GCA-landing_c1964.jpg.