<< >> NASA ASRS Report 217540, August 1992

An small transport, with the pilot's family on board, had a complete electrical failure. They landed safely at an en route airport.

Attributes
ACN	217540
Time
Date	199208
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : brv airport : w94
State Reference	VA
Altitude	msl bound lower : 5500 msl bound upper : 5500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dca
Operator	general aviation : personal
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	cruise other
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 7000 flight time type : 20
ASRS Report	217540
Person 2
Affiliation	government : faa
Function	controller : departure
Qualification	controller : radar
Events
Anomaly	aircraft equipment problem : critical other anomaly other other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency none taken : anomaly accepted other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Departed from oakland, ca. Intermittent electrical problem with left alternator unable to determine problem. Left dca on 8/sat/92 PM00 hours. Low voltage light on in climb. Both left alternator right alternator lights on. Showing a malfunction on both. Diverted to williamsburg, va. Just at ATC cleared me out of washington TCA. I squawked 1200. Full electrical failure. Electric altimeter drove to 0. Gear cranked down manually. Uneventful landing at williamsburg. If IFR conditions were encountered, the aircraft would have been only marginally ctlable due to altimeter draining itself to 0.

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Original NASA ASRS Text

Title: AN SMT, WITH THE PLT'S FAMILY ON BOARD, HAD A COMPLETE ELECTRICAL FAILURE. THEY LANDED SAFELY AT AN ENRTE ARPT.

Narrative: DEPARTED FROM OAKLAND, CA. INTERMITTENT ELECTRICAL PROBLEM WITH L ALTERNATOR UNABLE TO DETERMINE PROBLEM. L DCA ON 8/SAT/92 PM00 HRS. LOW VOLTAGE LIGHT ON IN CLB. BOTH L ALTERNATOR R ALTERNATOR LIGHTS ON. SHOWING A MALFUNCTION ON BOTH. DIVERTED TO WILLIAMSBURG, VA. JUST AT ATC CLRED ME OUT OF WASHINGTON TCA. I SQUAWKED 1200. FULL ELECTRICAL FAILURE. ELECTRIC ALTIMETER DROVE TO 0. GEAR CRANKED DOWN MANUALLY. UNEVENTFUL LNDG AT WILLIAMSBURG. IF IFR CONDITIONS WERE ENCOUNTERED, THE ACFT WOULD HAVE BEEN ONLY MARGINALLY CTLABLE DUE TO ALTIMETER DRAINING ITSELF TO 0.

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.