Narrative:

On a flight from 39N to hpn at 2000 ft and 10 NM southeast of sbj VOR, I contacted new york approach on 128.55 and asked for a class B clearance to hpn at 2000 ft. My route of flight as I requested would be direct the verazano bridge and continue north up the hudson at 2000 ft to hpn. The controller replied with a transponder code and class B clearance as I requested. At this time my alternator bus load warning light came on and stayed on. The controller then came on and gave me a handoff to new york on 127.30. I checked in with the next controller and he verified my clearance. I proceeded to shut down all my electrical equipment except the one radio and transponder. The warning light remained. On the panel lights started to dim and I slowed down in order to extend the landing gear while I still had some power. At this time I realized that I might lose the radio and transponder also. I then called the controller to inform him of my electrical power loss and asked him to contact white plains tower to let them know that I needed to land. I had also asked the new york controller to let the tower know that I would be coming in without lights or radios. Before I could receive a response from him I lost all electrical power. I maintained a careful outlook for other planes and immediately proceeded to descend down to 1000 ft to go under the class B airspace. I continued at 1000 ft up the hudson and into the pattern at hpn. Not seeing any other planes in the pattern, I landed uneventfully and taxied to my tiedown. The FBO was closed, so I called operations from my cell phone and they said that they had not heard from ZNY and they thanked me for letting them know about the incident.

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Original NASA ASRS Text

Title: A BE36 PVT PLT LOSES HIS ELECTRICAL PWR AND PROCEEDS TO HPN, HIS DEST ARPT. PLT HAD ATTEMPTED A LEVEL OF COORD WITH N90 PRIOR TO LOSING COM RADIO.

Narrative: ON A FLT FROM 39N TO HPN AT 2000 FT AND 10 NM SE OF SBJ VOR, I CONTACTED NEW YORK APCH ON 128.55 AND ASKED FOR A CLASS B CLRNC TO HPN AT 2000 FT. MY RTE OF FLT AS I REQUESTED WOULD BE DIRECT THE VERAZANO BRIDGE AND CONTINUE N UP THE HUDSON AT 2000 FT TO HPN. THE CTLR REPLIED WITH A XPONDER CODE AND CLASS B CLRNC AS I REQUESTED. AT THIS TIME MY ALTERNATOR BUS LOAD WARNING LIGHT CAME ON AND STAYED ON. THE CTLR THEN CAME ON AND GAVE ME A HDOF TO NEW YORK ON 127.30. I CHKED IN WITH THE NEXT CTLR AND HE VERIFIED MY CLRNC. I PROCEEDED TO SHUT DOWN ALL MY ELECTRICAL EQUIP EXCEPT THE ONE RADIO AND XPONDER. THE WARNING LIGHT REMAINED. ON THE PANEL LIGHTS STARTED TO DIM AND I SLOWED DOWN IN ORDER TO EXTEND THE LNDG GEAR WHILE I STILL HAD SOME PWR. AT THIS TIME I REALIZED THAT I MIGHT LOSE THE RADIO AND XPONDER ALSO. I THEN CALLED THE CTLR TO INFORM HIM OF MY ELECTRICAL PWR LOSS AND ASKED HIM TO CONTACT WHITE PLAINS TWR TO LET THEM KNOW THAT I NEEDED TO LAND. I HAD ALSO ASKED THE NEW YORK CTLR TO LET THE TWR KNOW THAT I WOULD BE COMING IN WITHOUT LIGHTS OR RADIOS. BEFORE I COULD RECEIVE A RESPONSE FROM HIM I LOST ALL ELECTRICAL PWR. I MAINTAINED A CAREFUL OUTLOOK FOR OTHER PLANES AND IMMEDIATELY PROCEEDED TO DSND DOWN TO 1000 FT TO GO UNDER THE CLASS B AIRSPACE. I CONTINUED AT 1000 FT UP THE HUDSON AND INTO THE PATTERN AT HPN. NOT SEEING ANY OTHER PLANES IN THE PATTERN, I LANDED UNEVENTFULLY AND TAXIED TO MY TIEDOWN. THE FBO WAS CLOSED, SO I CALLED OPS FROM MY CELL PHONE AND THEY SAID THAT THEY HAD NOT HEARD FROM ZNY AND THEY THANKED ME FOR LETTING THEM KNOW ABOUT THE INCIDENT.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.