Pilot's Operating Handbook
Supplement 66
GARMIN G1000 NXi retrofit
Edition 1 - November 9, 2017
Rev. 0
Page 9.66.5
GPS approach alarm limits exceeded
During a GPS LPV, LNAV/VNAV, or LNAV+V approach, if the Horizontal or Vertical
alarm limits are exceeded, the GARMIN System will downgrade the approach. This
will be annunciated by
APR DWNGRADE
and by an annunciation change on the
HSI from LPV, L/VNAV, or LNAV+V to LNAV. GPS glide path vertical guidance will be
removed from the PFD.
The approach may be continued using the LNAV only minimums.
During any GPS approach in which both precision and non-precision alarm limits are
exceeded, the GARMIN System will flag the lateral guidance and display
ABORT APR
, loss of navigation.
Immediately upon viewing the message, the unit will revert to Terminal navigation
mode alarm limits. If the position integrity is within these limits, lateral guidance will be
restored and the GPS may be used to execute the missed approach, otherwise
alternate means of navigation must be utilized.
PIM - DO NOT USE FOR FLIGHT OPERATIONS