As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE TO HOME STATION, THE HYDRAULIC CAWS LIGHT ILLUMINATED. QRH PROCEDURES WERE FOLLOWED AND THE LANDING GEAR WAS PUMPED DOWN MANUALLY. AIRCRAFT LANDED WITHOUT FURTHER EVENT. MAINTENANCE FOUND THE HYDRAULIC SYSTEM NITROGEN PRECHARGE TO BE LOW, CAUSING THE HYDRAULIC PUMP TO CYCLE ON AND OFF EXCESSIVELY, WHICH LED TO THE HYDRAULIC CAWS CAUTION LIGHT ILLUMINATING.