As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) OIL LEAK NOTICED FROM ENGINE COWL AFTER LANDING. SWITCH WAS BROKEN OFF OF NTS SWITCH HOUSING ON RT SIDE OF NOSE CASE. BROKEN BETWEEN FITTING END AND NUT PART, WHERE THE WRENCH WOULD BE USED TO SECURE IT. NEW SWITCH INSTALLED AND GROUND CHECKED SERVICIBLE AND AIRCRAFT RETURNED TO SERVICE