As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE A-SYSTEM HYDRAULIC FLUID AND PRESSURE WAS LOST AFTER TAKEOFF. ABNORMAL PROCEDURES WERE COMPLIED WITH AND THE FLIGHT WAS CONTINUED TO IAH WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE RT MLG LOCK SEQUENCE VALVE LEAKING. THE LOCK SEQUENCE VALVE WAS REMOVED AND REPLACED, LEAK AND OPERATIONAL CHECKS WERE GOOD. A LANDING GEAR RETRACTION TEST WAS PERFORMED IAW MM 32-32-0 AND ALL INDICATIONS WERE NORMAL.