As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AD 2013-11-11 HAD BEEN COMPLIED WITH BY IDENTIFYING THE PART NUMBER OF THE OIL PRESS SWITCH AS 83278 WHICH WOULD GIVE IT A 3000 HOUR SERVICE LIFE. DURING THE ANNUAL INSPECTION IT WAS DISCOVERED THAT THE SWITCH WAS LEAKING QUITE BADLY FROM THE CONNECTOR WELL AREA.