Small aircraft training aircraft during final IFR approach lost all electrical before landing.

Attributes
ACN	286142
Time
Date	199410
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : osu
State Reference	OH
Altitude	msl bound lower : 3000 msl bound upper : 3000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : osu tower : pit
Operator	general aviation : instructional
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	descent : approach landing other other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : instrument pilot : cfi pilot : commercial
Experience	flight time last 90 days : 150 flight time total : 700 flight time type : 15
ASRS Report	286142
Person 2
Affiliation	Other
Function	instruction : trainee
Qualification	pilot : private
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

We lost our alternator, tried shutting down all unnecessary electrical, but on final, all electrical equipment failed. I noticed radios were getting weak, checked voltage, noticed it was low, advised tower of situation, got on the ground as soon as possible. Belt looked fine on preflight - - lasted 2.5 hours of flight time.

Original NASA ASRS Text

Title: SMA TRAINING ACFT DURING FINAL IFR APCH LOST ALL ELECTRICAL BEFORE LNDG.

Narrative: WE LOST OUR ALTERNATOR, TRIED SHUTTING DOWN ALL UNNECESSARY ELECTRICAL, BUT ON FINAL, ALL ELECTRICAL EQUIP FAILED. I NOTICED RADIOS WERE GETTING WEAK, CHKED VOLTAGE, NOTICED IT WAS LOW, ADVISED TWR OF SIT, GOT ON THE GND AS SOON AS POSSIBLE. BELT LOOKED FINE ON PREFLT - - LASTED 2.5 HRS OF FLT TIME.

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.