Meggitt 60-2, Operating Handbook

Page: 31 / 62

4-8 2nd Ed: Nov 01, 01
SYS 60-2 POH
Approximately 45 seconds later, the maximum turn rate is reduced to
15% of standard rate (Soft Gain), and the lowest level of sensitivity is
achieved, identified by the NAV and SOFT annunciation's. The CAP
annunciation extinguishes. This condition provides low activity levels
during station passage when VOR signals are erratic.
The system also includes a course deviation monitor. If the aircraft
strays off course or LOC centerline by 50% needle deflection, the NAV
annunciator flashes as a warning. It should flash at station passage
because of short-term needle excursion beyond 50%. It also flashes
when the NAV flag is in view. When that occurs, the FAIL annunciation will
illuminate.
NOTE: When operating in the NAV/ SOFT mode, and needle deflection
of 50% or more is experienced for 1½ minutes, the gain program
will switch to NAV/CAP/SOFT, increasing sensitivity and authority to
reestablish the aircraft on course. When a course change of 10º or
more is required at an enroute waypoint, select the new course, and
reset the NAV mode to reinstate the capture sequence. Set the DG
heading bug to the new course.
4.2.1.3 VOR Approach (DG)
S
N
AV
G
S
Fig. 4-2. VOR/LOC/GPS