As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT AT HOVER. DURING HOVER, HYDRAULIC BLOCK LIGHT ILLUMINATED. NR 2 HYDRAULIC ENGAGED LIGHT ILLUMINATED AND COLLECTIVE DROPPED TO LOW STOP. AIRCRAFT RECOVERED PRIOR TO IMPACT. HYDRAULIC PACK CHANGED, AIRCRAFT CHECK FLOWN AND RETURNED TO SERVICE. (X)