Garmin GTN 650 Cockpit Reference Guide - Page 40

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Message APPROACH NOT ACTIVEDo not continue GPS approach. APPROACH DOWNGRADEApproach downgraded. Use LNAV minima. APR GUIDANCE AVAILABLETouch "Enable APR Output" before selecting APR on autopilot. CDI SOURCESelect appropriate CDI source for approach. CDI/HSI FLAGMain lateral/vertical flag on CDI/HSI is inoperative. Description Action GPS approach could not transition to active (e.g., the GTN is on an approach and did not have the required HPL/VPL to get into at least LNAV, so is still in TERM). Abort the approach, and execute a non-GPS based approach. Approach has been Continue to fly the approach downgraded from using published LNAV LPV or LNAV/VNAV, minimums. to an LNAV approach. Vertical guidance will be removed from the external CDI/HSI display. The GTN is configured Touch the "Enable APR for KAP140/KFC225 Output" button on the GTN, autopilot, and approach this will cause the autopilot guidance is now to go into ROL mode. available. Engage the autopilot into approach mode. Aircraft is on a GPS approach but CDI is set to VLOC, or aircraft is on VLOC approach and CDI is set to GPS and aircraft is less than 2 nm from the FAF. Select the appropriate CDI source for approach. The Main Lateral Superflag or Main Vertical Superflag output has been turned off due to an overcurrent condition. Verify course guidance is valid and correct by crosschecking with the GTN on-screen CDI and other navigational equipment. Contact dealer for service. Messages 34 GTN 625/635/650 Cockpit Reference Guide (CRG) 190-01004-04 Rev. C

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34
GTN 625/635/650 Cockpit Reference Guide (CRG)
190-01004-04
Rev. C
Messages
Message
Description
Action
APPROACH NOT ACTIVE-
Do not continue GPS
approach.
GPS approach could
not transition to active
(e.g., the GTN is on
an approach and did
not have the required
HPL/VPL to get into at
least LNAV, so is still in
TERM).
Abort the approach, and
execute a non-GPS based
approach.
APPROACH
DOWNGRADE-
Approach downgraded.
Use LNAV minima.
Approach has been
downgraded from
LPV or LNAV/VNAV,
to an LNAV approach.
Vertical guidance will
be removed from the
external CDI/HSI display.
Continue to fly the approach
using published LNAV
minimums.
APR GUIDANCE
AVAILABLE-
Touch “Enable APR
Output” before selecting
APR on autopilot.
The GTN is configured
for KAP140/KFC225
autopilot, and approach
guidance is now
available.
Touch the “Enable APR
Output” button on the GTN,
this will cause the autopilot
to go into ROL mode.
Engage the autopilot into
approach mode.
CDI SOURCE-
Select appropriate CDI
source for approach.
Aircraft is on a GPS
approach but CDI is set
to VLOC, or aircraft is
on VLOC approach and
CDI is set to GPS and
aircraft is less than
2 nm from the FAF.
Select the appropriate CDI
source for approach.
CDI/HSI FLAG-
Main lateral/vertical flag
on CDI/HSI is inoperative.
The Main Lateral
Superflag or Main
Vertical Superflag
output has been turned
off due to an over-
current condition.
Verify course guidance
is valid and correct by
crosschecking with the GTN
on-screen CDI and other
navigational equipment.
Contact dealer for service.