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This report should show, to a 90% confidence level, that the mean and standard deviations of the automatically recorded parameters are not, worse than those recorded during the certification simulation program. These distributions should be consistent with the flight test results upon which airworthiness certification is based.
The sources of data gathered during the operational demonstration should be distributed as evenly as possible across the fleet of the operator, using different airfield and ILS installations as required by the authority.
When automatic landing is anticipated at an airport with a particular terrain profile before the runway threshold or known to have particular characteristics, the automatic system performance should be confirmed in CAT I or better weather conditions prior to starting CAT II or CAT III operations.
3.6.4 REDUCED OPERATIONAL DEMONSTRATION
The operational demonstration as described above is not fully required in the cases listed below
. The operator has previous experience in CAT lI or III
operations with a variant of the same type of aircraft
utilizing the same basic flight control and display systems.
. The aircraft type has already been approved for CAT II or III
operations for another operator by any other JAA state.
When an operator has been approved in one country for CAT II or III, he is generally not required to accomplish complementary demonstration if he applies for Category II or III operations in another JAA country. With his application the operator may have to enclose proof of initial approval by his national authorities and a copy of the approval file.
3.6.5 ASPECTS OF FAA PROCESS
The FAA process differs from the process described in the JAR-OPS (Refer to AC120.29 and AC120.28D for more details).
CAT II: An operator is first given approval to operate to a DH of 150ft and a minimum RVR of 1600ft (500m) with no prior in-service proving. The results of the first six months of operations to these minima are analyzed and, if satisfactory, approval is given to use a DH of 100ft and a minimum RVR of 1200ft (350m).
For aircraft with an automatic landing system approved in accordance with App 1 of AC 120-29, no operational demonstration is required but the 6 months period of in service proving still applies to obtain 1200ft (350m) RVR.
CAT III: Following the issue to an operator of operations specifications authorizing CAT III A or III B minima the FAA requires a program of data collection in line service for a period of at least six months. During this period normally of 100 successful landings, including training flights, are required to demonstrate reliability and performance in line operations.
3.7 CONTINOUS MONITORING
This paragraph applies to operators already authorized for CAT II or CAT III operations. After obtaining the authorization, the operator must continue to provide reports of in-line service.
These reports must include the following information:
　
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