What was found
LEFT AND RIGHT MCDU LINE SELECT BUTTONS HAVE BLACK WORN OFF. REPLACED LEFT AND RIGHT MCDU KEYBOARDS AND PERFORMED GOOD INSTALLATION TEST IAW AMM 34-61-01-000-801 AND AMM 34-61-01-400-801.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
LEFT AND RIGHT MCDU LINE SELECT BUTTONS HAVE BLACK WORN OFF. REPLACED LEFT AND RIGHT MCDU KEYBOARDS AND PERFORMED GOOD INSTALLATION TEST IAW AMM 34-61-01-000-801 AND AMM 34-61-01-400-801.