As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PREPARING TO PUSH BACK, F/A ARMED R2 DOOR, THE OVERHEAD "ARMED" LIGHT WOULD NOT ILLUMINATE. MX INSPECTED AND ATTEMPTED TO ARM THE DOOR AND CONFIRMED THE FAULT . THE DOOR ARMING MECHANISM OPERATED NORMALLY IAW AMM 52-10-00-05. THE ACFT PUSHED BACK AT DEPARTED. NO FURTHER ISSUES WITH THIS DOOR HAVE BEEN NOTED.