Table of Contents
Advertisement
6 P
M
ERIODIC
This section contains information on periodic calibration and maintenance required for continued
airworthiness.
6.1 E
QUIPMENT
No scheduled servicing tasks or internal manual adjustments are required on the GDL 90.
6.2 C
LEANING
The GDL 90 does not require regular cleaning.
6.3 B
R
ATTERY
The GDL 90 includes an internal battery that will last about 10 years. The battery is used for internal
RAM memory and GPS system information. Regular planned replacement is not necessary. The GDL 90
Maint. LED will be lit when replacement is required. To verify that the battery needs replacing, use the
"Service" command in Maintenance Mode. Once low battery is confirmed, the battery should be
replaced within 1 to 2 months.
If the battery is not replaced and becomes totally discharged, the GDL 90 will remain fully operational,
but the GPS signal acquisition time will be increased. There is no loss of function or accuracy of the
GDL 90 with a discharged battery.
The battery is not user-replaceable. To replace the battery, contact the Garmin AT repair station.
GDL 90 Installation Manual
AINTENANCE
C
ALIBRATION
EPLACEMENT
560-1049-00 Rev B
Periodic Maintenance
6-1
Advertisement
Table of Contents
