As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(MRR NR 02-012405) LOSS OF HYDRAULIC PRESSURE AND QUANTITY LED TO THE INABILITY TO OPERATE THE LANDING GEAR WITH NORMAL PROCEDURES. LANDING GEAR HAD TO BE EXTENDED MANUALLY WITH THE HAND PUMP. NOTE: THIS WAS A PILOT TRAINING FLIGHT ONLY. FAILED LANDING GEAR HYDRAULIC SYSTEM HOSE. REMOVED AND REPLACED HYDRAULIC HOSE. (NM05200502790) (K)