PRESSURIZED C210 PLT EXPERIENCES LOSS OF AC GENERATION AND COM DIFFICULTIES WHILE ON AN IFR FLT.

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THE PLT FILED AN INST FLT PLAN FOR A DEP FROM ZZZ1 TO ZZZ2. CONDITIONS WERE VFR; WITH THE SKY CLR AND VISIBILITY UNRESTR AT THE TIME OF THE INCIDENT. ZZZ1 IS AN UNCTLED ARPT. PLT OBTAINED CLRNC ON GND JUST PRIOR TO DEP. PLT RECEIVED CLRNC TO TURN TO HDG 090 DEGS ONCE IN CTLED AIRSPACE; CLB TO 2000 FT AND EXPECT 19000 FT IN 10 MINS. THE PLT DEPARTED ZZZ1 ON RWY XX AT APPROX XA37 AM; CLBED TO APPROX 700 FT AND ENGAGED THE AUTOPLT WHICH COMMENCED A TURN TOWARD A PRESET HDG OF 090 DEGS. PLT'S ATTEMPTS TO CONTACT DEP FOLLOWING DEP AND DURING CLBOUT WERE UNSUCCESSFUL. PLT SWITCHED RADIOS; CHKED THE AUDIO PANEL; ATTEMPTED TO REESTABLISH COM; AND ATTEMPTED TO DETERMINE THE SOURCE OF ISSUE; WITHOUT INITIAL SUCCESS. THE RADIOS WERE POWERED UP; HOWEVER; RADIOS WOULD NOT XMIT; AND THE RECEIVE SIGNALS WERE INTERMITTENT AND EXTREMELY WEAK. ADDITIONAL ELECTRICAL SYS ISSUES WERE OBSERVED INCLUDING INTERMITTENT INDICATORS LIGHTS. BASED ON THE APPARENT ELECTRICAL SYS PROBS; LOSS OF EFFECTIVE RADIO COMS; AND LACK OF ATC CTL OF OR COMS WITH ACFT IN THE VICINITY OF ZZZ1; THE PLT'S IMMEDIATE FOCUS AND EFFORT WAS TO MAINTAIN VFR FLT IN VISUAL METEOROLOGICAL CONDITIONS; MAINTAIN VISUAL SEPARATION FROM ALL OTHER ACFT; AND MAINTAIN SAFE CTL OF THE ACFT WHILE ATTEMPTING TO RESTORE THE ELECTRICAL AND COMS SYS. ADDITIONAL INFLT INSPECTION REVEALED NO OUTPUT FROM EITHER OF THE ALTERNATORS AND THE SYS VOLTAGE HAD DROPPED TO APPROX 18-20V. THE PLT OBSERVED BOTH ALTERNATORS IN THE ON POS. HOWEVER; RECYCLING OF 1 OF THE ALTERNATOR SWITCHES PARTIALLY RESTORED THE CHARGING SYS AND PROVIDED ADDITIONAL VOLTAGE. WITHIN APPROX 3-4 MINS OF DEP; AND WHILE STILL TRYING TO RESOLVE THE ELECTRICAL AND COM SYS PROBS; THE PLT EVENTUALLY ESTABLISHED INITIAL CONTACT WITH DEP CTL; ALBEIT SOMEWHAT LIMITED AND DIFFICULT TO UNDERSTAND. AMONGST THE DISTRS AND CONFUSION; AND WHILE STILL ATTEMPTING TO COMPLETELY RESTORE THE ELECTRICAL SYS; THE PLT ATTEMPTED TO ESTABLISH INITIAL CONTACT AND REQUEST TO CONTINUE A CLB THROUGH 2500 FT. ADDITIONAL RADIO COMS PROBS ENSUED; WHERE THE PLT UNDERSTOOD THE CTLR TO BE ACKNOWLEDGING THE CLB FROM EITHER 2000 FT OR 2500 FT TO 20000 FT AND REQUESTING THE PLT TO CONFIRM THE SAME. WHEN TRYING TO CONFIRM THE CLB AND ALTS; THE CTLR GREW INCREASINGLY FRUSTRATED AND ADVISED THE PLT THAT HE WAS FILED TO 19000 FT AND CLRED TO 2000 FT AT 090 DEGS. THE PLT APOLOGIZED FOR THE CONFUSION AND ATTEMPTED TO CONVEY TO THE CTLR THAT HE WAS EXPERIENCING PROBS WITH THE ACFT'S SYS. THE PLT THEN ATTEMPTED TO ACKNOWLEDGE AND COMPLY WITH THE SAME; HOWEVER; THE CTLR ISSUED NEW INSTRUCTIONS TO CLB TO A NEW ALT AND NEW COURSE HDG. IRRESPECTIVE OF THE PROBS AND DISTRS THE PLT WAS DEALING WITH; THE CTLR APPEARED TO GROW INCREASINGLY FRUSTRATED AND REQUESTED THE PLT COPY A PHONE NUMBER SEVERAL TIMES DURING THIS PERIOD; WHICH FURTHER RATTLED THE PLT AS HE TRIED TO MAINTAIN CTL; FULLY REESTABLISH THE ELECTRICAL AND COMS SYS; AS WELL AS REPROGRAM THE NAV AND AUTOPLT SYS. THE TOTAL DURATION INVOLVING THE INCIDENT WAS APPROX 4 MINS WHICH OCCURRED WITHIN APPROX 5 MI OF ZZZ1. THE PLT WAS ABLE TO SUCCESSFULLY MAINTAIN ADEQUATE VISUAL SEPARATION FROM ALL OTHER ACFT IN THE VICINITY OF THE CLASS E AIRSPACE DURING THAT TIME. THE REMAINDER OF THE FLT WAS COMPLETED WITHOUT FURTHER ISSUE. AFTER LNDG AT ZZZ2 THE PLT CALLED THE NUMBER AND ADVISED OF THE ELECTRICAL SYS FAILURE; LOSS OF COMS AND AUTOPLT PROB. THE ATC PERSON TOOK THE PLT'S INFO AND ADVISED THAT NO OTHER ACFT WERE IN THE IMMEDIATE AREA AT THE TIME OF THE INCIDENT AND CONFIRMED THAT NO ACFT SEPARATION CONFLICTS HAD OCCURRED INVOLVING THE PLT'S ACFT. EVAL OF THE ELECTRICAL AND COM SYS DURING THE INCIDENT REVEALED THAT THE OVER-VOLTAGE REGULATORS HAD TRIPPED. THE SYS VOLTAGE HAD DROPPED TO APPROX 18-20V; WHICH CAUSED THE RADIO DISPLAYS TO REMAIN POWERED UP BUT NOT ABLE TO XMIT OR RECEIVE PROPERLY. THE FAILURE ALSO INTRODUCED OTHER RELATED ISSUES INCLUDING INTERRUPTION OF AUTOPLT PART WAY THROUGH THE INITIAL TURN AND LEAVING THE TRIM IN A CONTINUED CLB STATE. RECYCLING OF BOTH ALTERNATORS EVENTUALLY REESTABLISHED THE CORRECT SYS VOLTAGE AND PROPER OP OF THE ACFT'S SYS. FOLLOWING THE INCIDENT; THE PLT CAREFULLY CONSIDERED THE SITUATION AND TOOK THE FOLLOWING ACTIONS TO AVOID ANY FUTURE OCCURRENCE: 1) THE SUBJECT ACFT'S VOLTAGE REGULATORS WERE AGAIN CHKED AND RECALIBRATED AFTER THE INCIDENT TO ENSURE CORRECT OP; 2) THE ENTIRE COM AND NAV SYS WAS SCHEDULED TO BE REPLACED WITH A COMPLETELY NEW SYS PRIOR TO THE INCIDENT; 3) THE PLT OBTAINED ADDITIONAL TRAINING SURROUNDING EMER PROCS AND HOW TO BEST HANDLE AND MANAGE PRIORITIZATION OF ATC REQUEST DURING SYS FAILURES. THE REVIEW INCLUDED PROPER PROCEDURAL AND COM PROTOCOL DURING SYS FAILURES; EMERS AND HIGH STRESS SITUATIONS IN ADDITION TO PROPER ATC COMS.