Garmin G500 Cockpit Reference Manual page 6

WARNINGS, CAUTIONS, AND NOTES
WARNING: Because of anomalies in the earth's magnetic fi eld, operating
the G500 within the following areas could result in loss of reliable attitude
and heading indications. North of 70° North latitude and south of 70°
South latitude. An area north of 65° North latitude and between longitude
75° West and 120° West. An area south of 55° South latitude between
longitude 120° East and 165° East.
WARNING: Do not use Terrain-SVT information for primary terrain
avoidance. Terrain-SVT is intended only to enhance situational
awareness.
CAUTION: The United States government operates the Global Positioning
System and is solely responsible for its accuracy and maintenance. The
GPS system is subject to changes which could affect the accuracy and
performance of all GPS equipment. Portions of the Garmin GDU 620 utilize
GPS as a precision electronic NAVigation AID (NAVAID). Therefore, as with
all NAVAIDs, information presented by the GDU 620 can be misused or
misinterpreted and therefore, become unsafe.
CAUTION: The Garmin GDU 620 does not contain any user-serviceable
parts. Repairs should only be made by an authorized Garmin service center.
Unauthorized repairs or modifi cations could void both the warranty and
pilot's authority to operate this device under FAA/FCC regulations.
CAUTION: The GDU 620 PFD and MFD displays use a lens coated with a
special anti-refl ective coating that is very sensitive to skin oils, waxes, and
abrasive cleaners. CLEANERS CONTAINING AMMONIA WILL HARM THE
ANTI-REFLECTIVE COATING. It is very important to clean the lens using a
clean, lint-free cloth and an eyeglass lens cleaner that is specifi ed as safe
for anti-refl ective coatings.
NOTE: Interference from GPS repeaters operating inside nearby hangars
can cause an intermittent loss of attitude and heading displays while the
aircraft is on the ground. Moving the aircraft more than 100 feet away
from the source of the interference should alleviate the condition.
iv G500 Cockpit Reference Guide 190-01102-03 Rev C