What was found
DURING GROUND FUNCTIONAL CHECKS FOLLOWING INITIAL INSTALLATION, MX20 DISPLAYS THE ERROR MESSAGE (GDL90 REQUIRES MAINTENANCE). UPON INSTALLATION OF ANOTHER UNIT, ERROR MESSAGE CLEARED, SYSTEM OPERATION SATISFACTORY. (AL05200502604) (K)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING GROUND FUNCTIONAL CHECKS FOLLOWING INITIAL INSTALLATION, MX20 DISPLAYS THE ERROR MESSAGE (GDL90 REQUIRES MAINTENANCE). UPON INSTALLATION OF ANOTHER UNIT, ERROR MESSAGE CLEARED, SYSTEM OPERATION SATISFACTORY. (AL05200502604) (K)