As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CRUISE 300 FT AGL, MAIN TRANSMISSION OIL PRESS WAS NOTICED FLUCTUATING. AN IMMEDIATE PRECAUTIONARY LANDING WAS CARRIED OUT. A/C WAS INTERMEDIATELY SHUT DOWN. UPON INVESTIGATION TUBE ASSY P/N 212-040-233-001 IN HELL HOLE WAS FOUND LEAKING. TUBE REPLACED TRANSMISSION FILTER WAS INSPECTED NO CONTAMINATION WAS FOUND. 6 LITRES OF OIL WAS ADDED. (12 L MAX CAPACITY) AIRCRAFT GROUND RUN & RETURNED TO SERVICE.