CAT II/III APPROVAL PROCESS
3.8
3.8.1
AUTOLAND IN CAT I OR BETTER WEATHER CONDITIONS
GENERAL
Some operators may wish to perform automatic landings in CAT I or better weather conditions for training purpose or to record data for an operational demonstration or even at crew discretion. Some guidelines are given below on the conditions, which must be considered by the airline before authorizing its crews to perform automatic landings.
3.8.2
AIRPORT REQUIREMENTS
The Automatic Landing System performance has been demonstrated during type certification with CAT II or CAT III ILS qualify beam, nevertheless automatic landing on CAT I ILS quality beam is possible provided the Airline has checked that the guidance below 200ft is satisfactory. Operators should interrogate the airport authorities on ILS ground equipment quality and on experience with other operators. They should check with the authorities that specific restrictions do not apply at airports with CAT I only capability. Terrain profile before the runway threshold has also to be considered since it may significantly affect the automatic landing system performance. It is generally accepted that automatic landings in CAT I or better weather conditions are performed without activation of the low visibility procedures. In particular, ILS-sensitive areas will not be protected which means that ILS fluctuations may be encountered due to the presence of an aircraft or a vehicle taxiing in the sensitive areas. On that same aspect, airport authorities should be interrogated and in some cases it may be necessary to protect the ILS sensitive areas before an automatic landing is performed.
3.8.3
CREW AUTHORIZATION
The airline must establish its own standards to authorize pilots for automatic landings. Only pilots authorized by the airline can perform automatic landings.
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飞行翻译公司 www.aviation.cn 本文链接地址：getting to grips with CAT II CAT III operations_部分2.pdf
3.8
3.8.1
AUTOLAND IN CAT I OR BETTER WEATHER CONDITIONS
GENERAL
Some operators may wish to perform automatic landings in CAT I or better weather conditions for training purpose or to record data for an operational demonstration or even at crew discretion. Some guidelines are given below on the conditions, which must be considered by the airline before authorizing its crews to perform automatic landings.
3.8.2
AIRPORT REQUIREMENTS
The Automatic Landing System performance has been demonstrated during type certification with CAT II or CAT III ILS qualify beam, nevertheless automatic landing on CAT I ILS quality beam is possible provided the Airline has checked that the guidance below 200ft is satisfactory. Operators should interrogate the airport authorities on ILS ground equipment quality and on experience with other operators. They should check with the authorities that specific restrictions do not apply at airports with CAT I only capability. Terrain profile before the runway threshold has also to be considered since it may significantly affect the automatic landing system performance. It is generally accepted that automatic landings in CAT I or better weather conditions are performed without activation of the low visibility procedures. In particular, ILS-sensitive areas will not be protected which means that ILS fluctuations may be encountered due to the presence of an aircraft or a vehicle taxiing in the sensitive areas. On that same aspect, airport authorities should be interrogated and in some cases it may be necessary to protect the ILS sensitive areas before an automatic landing is performed.
3.8.3
CREW AUTHORIZATION
The airline must establish its own standards to authorize pilots for automatic landings. Only pilots authorized by the airline can perform automatic landings.
- 94 -
飞行翻译公司 www.aviation.cn 本文链接地址：getting to grips with CAT II CAT III operations_部分2.pdf
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