A bell helicopter textron lost all electrical power and entered class D airspace without clearance.

Attributes
ACN	432793
Time
Date	199904
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : frg.airport
State Reference	NY
Altitude	msl single value : 600
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : frg.tower
Operator	common carrier : air taxi
Make Model Name	Jet/Long Ranger
Operating Under FAR Part	Part 135
Navigation In Use	other
Flight Phase	descent : intermediate altitude
Route In Use	approach : visual
Flight Plan	VFR
Person 1
Affiliation	company : air taxi
Function	flight crew : single pilot
Qualification	pilot : cfi pilot : instrument pilot : atp pilot : multi engine
Experience	flight time last 90 days : 100 flight time total : 11500 flight time type : 400
ASRS Report	432793
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	aircraft equipment problem : critical airspace violation : entry non adherence : far other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : warning light other flight crewa
Resolutory Action	flight crew : landed in emergency condition
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

After handoff from jfk tower to below and east of class B airspace, while VFR from helipad to frg in a BHT206-bii, was unable to contact frg tower for clearance to enter class D airspace for landing at hangar. It appeared that the generator dropped off line and the battery power was too low to support my xmissions to tower for clearance to enter class D airspace. While remaining southwest of class D and trying to troubleshoot problem, the annunciator light indicating loss of power to fuel pumps came on. Being unable to transmit to declare my emergency, and being over a congested area, I determined that the safest course of action was to enter class D without clearance and land at hangar. This area is in the southwest corner of the airport, closest to my position and my flight path did not interfere with other traffic. Tower was unaware of my arrival until notified by another aircraft that had heard parts of my xmissions. After landing, I was able to reset the generator switch and the problem did not recur. I might have been able to avoid this situation if I had noticed earlier the lack of generator output and had more quickly shed electrical load.

Original NASA ASRS Text

Title: A BELL HELI TEXTRON LOST ALL ELECTRICAL PWR AND ENTERED CLASS D AIRSPACE WITHOUT CLRNC.

Narrative: AFTER HDOF FROM JFK TWR TO BELOW AND E OF CLASS B AIRSPACE, WHILE VFR FROM HELIPAD TO FRG IN A BHT206-BII, WAS UNABLE TO CONTACT FRG TWR FOR CLRNC TO ENTER CLASS D AIRSPACE FOR LNDG AT HANGAR. IT APPEARED THAT THE GENERATOR DROPPED OFF LINE AND THE BATTERY PWR WAS TOO LOW TO SUPPORT MY XMISSIONS TO TWR FOR CLRNC TO ENTER CLASS D AIRSPACE. WHILE REMAINING SW OF CLASS D AND TRYING TO TROUBLESHOOT PROB, THE ANNUNCIATOR LIGHT INDICATING LOSS OF PWR TO FUEL PUMPS CAME ON. BEING UNABLE TO XMIT TO DECLARE MY EMER, AND BEING OVER A CONGESTED AREA, I DETERMINED THAT THE SAFEST COURSE OF ACTION WAS TO ENTER CLASS D WITHOUT CLRNC AND LAND AT HANGAR. THIS AREA IS IN THE SW CORNER OF THE ARPT, CLOSEST TO MY POS AND MY FLT PATH DID NOT INTERFERE WITH OTHER TFC. TWR WAS UNAWARE OF MY ARR UNTIL NOTIFIED BY ANOTHER ACFT THAT HAD HEARD PARTS OF MY XMISSIONS. AFTER LNDG, I WAS ABLE TO RESET THE GENERATOR SWITCH AND THE PROB DID NOT RECUR. I MIGHT HAVE BEEN ABLE TO AVOID THIS SIT IF I HAD NOTICED EARLIER THE LACK OF GENERATOR OUTPUT AND HAD MORE QUICKLY SHED ELECTRICAL LOAD.

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.