PLT OF AN SMT ACFT USED IN SCHEDULED CARGO SVC; OPERATED ACFT IN AN UNAIRWORTHY CONDITION.

Narrative

I WAS FLYING AN SMT ACFT ON THE VOR A INTO BRACKETT. 2 ATTEMPTS TO LOWER LNDG GEAR RESULTED IN NO GREEN LIGHTS; ILLUMINATED RED 'GEAR UNSAFE' LIGHT; AND GEAR HANDLE NOT CYCLED BACK TO NEUTRAL POS. I RECEIVED PERMISSION FOR A LOW FLY-BY OF THE TWR (WHICH HAD MADE ITS CLOSING ANNOUNCEMENT PRIOR TO MY REQUEST FOR FLY-BY) AND TRIED THE GEAR HANDLE A THIRD TIME. THIS TIME; 2 MAIN GEAR GREENS LIT UP; RED LIGHT WAS STILL ON AND GEAR HANDLE HAD NOT RECYCLED. TWR RPTED SEEING MAINS DOWN BUT NOSE GEAR ONLY 2/3 DOWN. RPT WAS CONFIRMED BY A TAXIING ACFT. A FOURTH ATTEMPT AT GEAR HANDLE WAS ALSO FRUITLESS; SO I LOWERED GEAR MANUALLY. IAW COMPANY EMER PROCS. ANOTHER LOW FLY-BY SHOWED GEAR TO BE IN PLACE. I THEN LANDED PLANE; TAXIED TO PARKING; INSPECTED GEAR (FOUND NO NOTICEABLE LEAKS OR DAMAGE) OFF LOADED CARGO AND DEPARTED BRACKETT FOR BURBANK. I LEFT GEAR IN DOWN AND LOCKED POS. LNDG AT BUR WAS UNEVENTFUL. COMPANY PROCS WERE TO CALL DISPATCH WHEN I ENCOUNTERED PROBLEMS IN THE BRACKETT TFC PATTERN. THIS I DID NOT DO. FURTHER; COMPANY INSTRUCTS US TO PHONE DISPATCH AFTER LNDG IN THE EVENT OF AN INCIDENT OF THIS TYPE; WHICH I DID NOT DO. WHEN CALLING IN TO BUR ENRTE TO BUR; I GAVE MY ETA BUT MADE NO REF TO A GEAR PROBLEM. DIAGNOSIS OF PROBLEM ONCE PLANE HAD BEEN INSPECTED BY MAINT PERSONNEL: CABLE HAD SAWED THROUGH HYD GEAR LINE AND ALL HYD FLUID HAD BEEN LOST EXCEPT ENOUGH FOR THE ONE MANUAL GEAR EXTENSION. I DID CONSIDER NOTIFYING DISPATCH ON THE GND AT BRACKETT; BUT SINCE MANUAL GEAR OPERATING PROCS WERE FOLLOWED AND SUCCESSFUL; GEAR WERE SEEMINGLY UNDAMAGED; PLANE WAS RELATIVELY LIGHT AND LNDG AT BRACKETT WAS MADE WITHOUT EVENT; I ELECTED NOT TO CONTACT DISPATCH.