Periodic Maintenance; Equipment Calibration; Vor Checks; Cleaning - Garmin GTR 225 Installation Manual

7 PERIODIC MAINTENANCE

7.1 Equipment Calibration

No scheduled servicing tasks are required on the GTR/GNC.

7.2 VOR Checks

Refer to CFR 14 paragraph 91.171. Every 30 days verify the limits of the permissible indicated bearing
error.

7.3 Cleaning

The front bezel, keypad, and display can be cleaned with a microfiber cloth or with a soft cotton cloth
dampened with clean water. DO NOT use any chemical cleaning agents. Care should be taken to avoid
scratching the surface of the display.
190-01182-02 GTR 225/GNC 255 TSO Installation Manual
Rev. B Page 7-1