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disengagement, . Compatibility of automatic flight control systems, flight director and raw data, . Indication of the position of the aircraft relative to the ILS centerline
when descending through 100ft (30m),
. Touchdown position,
. Reason for failure leading to aborted approach.
AUTOMATIC FLIGHT RECORDINGS (for DH < 50ft or no DH only)
According to the JAR OPS, the data to be recorded automatically is:
. Deviation from localizer at touchdown,
. Flare time,
. Date of descent at touchdown,
. Pitch and bank angles at touchdown,
. Speed loss in flare,
. Maximum deviation during ground roll-out (for aircraft with
automatic ground roll control or guidance intended for operations with no DH).
To obtain the list of data required by the FAA, please refer to AC120.29 (FAA does not require automatic flight recordings).
Figure 3.10 Example of form for crew reports Figure 3.11 Example of automatic recorded parameters
3.6.3 FULL OPERATIONAL DEMONSTRATION
A complete demonstration is required when an operator introduces a new aircraftnew into service for CAT II or CAT III (refer to the paragraph 3.6.4 for cases which apply for reduced demonstration). This operational demonstration process often follows the same basic sequences, even if national variants exist. It consists of a progressive introduction to lower minima with periodic reports of the approaches made during actual in-line service.
For information, a description of a typical operational demonstration process is in line with JAR OPS 1 is shown below.
JAA OPERATIONAL DEMONSTRATION PROCESS
1) Decision height 200 - 50ft
The aircraft type should be operated for a period of at least 6 months with DH of 200ft or more, using the operating and maintenance procedures, which are intended to be used, when the DH is lowered. During this period a pilot report should be obtained for each approach with the data described in paragraph 3.6.2. These reports should be analyzed and a summary report issued to the authority. This report should show that, to a 90% confidence level, 95% of approaches made using the lower DH would be successful. In the absence of any failures this could be demonstrated with typically 30 approaches.
2) Decision height below 50ft or no decision height
For a period which should not normally be less than 6 months the aircraft type should be operated with DH of 50ft or more, using the system operating and maintenance procedures, which are intended to be used, when a DH below 50ft is used or there is no DH.
The data should cover typically 100 landings, which should be supported by data recorder information (in addition to crew reports). These reports should be analyzed and a summary report issued to the authority.
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