Garmin 500W Series, Instructions Manual

500W Series 

190-01226-03 Rev. 5 

Instructions for Continued Airworthiness Bell 206B 

Page 18 of 23 

Alert Text 

Possible Cause 

Solution 

TAWS has failed 



  The 500W Series unit has detected a 

failure in its TAWS system. 



  Ensure that terrain database 

is inserted in right most card 
slot. 



  Reload the terrain database. 



  Contact Garmin technical 

support. 

TAWS inhibit key stuck 



  The external TAWS inhibit key is 

stuck. 



  Verify that the wiring is not 

shorted to ground. 



  Contact Garmin technical 

support. 

TAWS mute caution 
key is stuck 



  The external HTAWS aural 

suppression input is stuck 



  Try pressing the TAWS mute 

key again to cycle its 
operation.  If problem persists 
contact Garmin technical 
support. 

TAWS reduced 
protection key is stuck 



  The external TAWS reduced 

protection key is stuck 



  Try pressing the TAWS 

reduced protection key to 
cycle its operation.  If the 
problem persists contact 
Garmin technical support. 

TERRAIN configuration 
conflict 



  The current Terrain configuration is 

not supported by the hardware. 



  Reconfigure the unit. 

TERRAIN configuration 
has changed 



  The unit’s terrain settings have 

changed since it was last turned on 
in normal mode. 



 Reconfigure TERRAIN 

settings 



  Contact Garmin technical 

support 

Terrain database 
integrity error 



  The 500W Series unit has detected a 

problem with a database on the 
Terrain data card.   



  Reloading the information 

onto the card.   



  Replace the card. 

TERRAIN has failed 



  The unit has detected a failure in the 

terrain system. 



  Ensure that Terrain database 

is inserted in the right most 
card slot. 



  Reload the TERRAIN 

database.   



  Contact Garmin technical 

support. 

Traffic device has failed 



  The 500W Series unit cannot 

communicate with the traffic system 
and/or the traffic system is reporting a 
system failure. 



  Check for proper configuration 



  Check for correct wiring 



  Refer to the Traffic system 

installation manual. 

Traffic device needs 
service 



  The traffic device is reporting a system 

failure.   



  Refer to the Traffic system 

installation manual. 

User card format 
unknown 



  A data card has been inserted, but the 

format of the card is not recognized. 



  Reload the information onto 

the card.  If that does not 
solve the problem replace the 
card.