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2nd Ed: May 31, 2002
4-21
SYS FIFTY FIVE X POH
4.3.2
Straight-In Localizer Intercept and Tracking (Standard DG)
With the appropriate localizer frequency selected, set the heading bug to
the INBOUND localizer course and engage the NAV mode to track the
localizer front course inbound or back course outbound.
When a localizer is channeled and NAV Mode is selected, the System
Fifty Five X will automatically execute high sensitivity gain for the approach
and activate the APR Mode. NAV and APR will be annunciated.
If the course needle is at full-scale deviation, the autopilot will establish
a 45
!
intercept angle. As the aircraft approaches the localizer course, the
autopilot senses the closure rate, and gradually shallows the intercept
angle. The point at which this turn begins is variable, depending on the
aircraft position and closure rate to the course. However, the turn will
always begin between 100% (full-scale) needle deflection and 20% of
full-scale.
During the intercept sequence, the system operates in maximum gain
and sensitivity to needle position and motion and can command the
aircraft at 90% of the standard rate turn. When the localizer course is
intercepted, and the needle is centered (indicating course capture),
initiation of the tracking gain program is automatic.
If the aircraft is equipped with the
optional remote annunciator, the
NAV, APR, and CAP modes will be
annunciated.
The high sensitivity level is maintained for about 15 seconds while wind
correction angle is established. Turn rate maximum is then reduced to
45%of standard rate.
If the heading bug is within 5
!
of center and needle deflection is less
than 10%, the computer will immediately establish this sensitivity level
when NAV is selected.
The system also includes a course deviation monitor. If the aircraft strays
off LOC centerline by 50% needle deflection, the NAV annunciator flashes
a warning. It also flashes when the OBS NAV flag is displayed. When that
occurs, the FAIL annunciation will illuminate.
Содержание System 55X
Страница 1: ...System Fifty Five X Autopilot Pilot s Operating Handbook ...
Страница 6: ...2nd Ed May 31 2002 1 1 SYS FIFTY FIVE X POH SECTION 1 INTRODUCTION ...
Страница 8: ...1st Ed May 31 2002 2 1 SYS FIFTY FIVE X POH SECTION 2 BLOCK DIAGRAM ...
Страница 10: ...2nd Ed May 31 2002 3 1 SYS FIFTY FIVE X POH SECTION 3 AUTOPILOT OVERVIEW ...
Страница 12: ...2nd Ed May 31 2002 4 1 SYS FIFTY FIVE X POH SECTION 4 PROCEDURES ...
Страница 51: ...2nd Ed May 31 2002 5 1 SYS FIFTY FIVE X POH SECTION 5 SPECIFICATIONS ...
Страница 54: ...2nd Ed May 31 2002 6 1 SYS FIFTY FIVE X POH SECTION 6 GLOSSARY ...