Section 3 In-Flight Procedures
3-13
2nd Ed Aug 2019
S-TEC 3100 Digital and Analog
NOTE:
APR
GPSS
uses an internally calculated roll steering command to steer the
aircraft onto the inbound course with greater accuracy.
If preferred, NAV
GPSS
may be used to slave the 3100 to the GPS
navigator output. APR
GPSS
must then be manually selected for the 3100
to arm and track any vertical guidance.
Figure 3-8: RNAV Approach Procedure
1) Program approach into GPS navigator.
2) Track the approach procedure using
NAV
GPSS
mode.
APR
GPSS
should not be used until the
aircraft is on the final inbound course
or at the FAF and looking for vertical
guidance.
3) Begin descent at IAF in PITCH,
VS, or IAS mode. Recommended
altitude at FAF is 1500 feet AGL.
4) Prepare for turn towards FAF.
Press
once established on
the inbound course to arm vertical
guidance.