User manual

64 65
64 65
tracking. VOR/LOC deviation is shown on the HSI, and actual crab ang-
le will be shown by offset of the course arrow from the lubber line.
Throughout APPR mode operation, LOC and Glideslope deviation or
VOR deviation are displayed in the HSI. If the Autopilot is engaged
during operation in the APPR mode, automatic steering response will
follow the command display on the FCI.
The Glideslope mode is armed for automatic capture if LOC front
course capture has occurred. Automatic Glideslope capture occurs as
the aircraft passes through the glide path from above or below.
Upon interception of the Glideslope, capture occurs and „GS CPLD” is
lighted on the Annunciator Panel. A smooth capture pitch command is
displayed by the Command V-bar. The pilot (or Autopilot) controls the
aircraft to satisfy the Command V-bar.
Upon GS capture, the ALT HOLD mode (if active) is cancelled. Howe-
ver, ALT HOLD may be manually reselected to maintain altitude upon
reaching MDA if visual contact is not established.
During VOR or RNAV approaches, Glideslope capture will not occur
because the NAV receiver is channeled to a VOR station, not an ILS,
and this locks out the Glideslope function.
APPR CPLD mode is cancelled by selection of HDG, NAV, or Go-Around
modes, or pushing FD or APPR to „Off”.
Caution: The APPR mode of operation will continue to provide airplane
control without a valid VOR/LOC signal (NAV flag in view).
Note: Overshoot protection is not possible in Microsoft Flight Simulator.
BACK COURSE (BACK CRS) Mode
Whenever a LOC or ILS frequency is selected, the BC mode may be
activated by depressing the BC button on the Mode Controller, after
selecting APPR. When in BC mode and Localizer capture occurs. the
system will turn and track outbound on the front course or inbound
on the back course. The BC mode reverses the LOC deviation signal
and course datum to permit the FCI steering command display to
operate on a fly-to rather than a fly-from basis on the reverse course.
„BACK CRS” is lighted on the Annunciator Panel.
Operation on BC is identical to front course operation including setting
the HSI Course Pointer to the front course heading, except that au-