As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HOSE IS INSTALLED ON MD902 HELICOPTERS. MD P/N IS 900D3409526-105. HOSE IS USED FOR MAIN TRANSMISSION OIL COOLING. FOUND LARGE ACCUMULATION OF OIL ON TRANSMISSION DECK AFTER FLIGHT. HOSE WAS FOUND TO BE CRACKED IN ONE OF THE BELLOWS. (CORE OF HOSE IS STAINLESS STEEL BELLOWS WITH A COVERING OF STAINLESS STEEL BRAID). REPLACED HOSE WITH NEW.