<< >> NASA ASRS Report 205081, March 1992

GA pilot lost all aircraft electrical power radio communications at the missed approach point during a practice ILS instrument approach in a small sel aircraft.

Attributes
ACN	205081
Time
Date	199203
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : cys
State Reference	WY
Altitude	msl bound lower : 6318 msl bound upper : 8500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : cys
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	landing : missed approach
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 15 flight time total : 410 flight time type : 390
ASRS Report	205081
Person 2
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 130 flight time total : 15500 flight time type : 3000
ASRS Report	205080
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

During an ILS practice approach noticed the ammeter near 0 and considered possibility of a faulty gauge. When initiating missed approach and during reception of missed approach instruction, experienced total electrical failure. Knowing that other aircraft were cleared to land on both runways 30 and 26, we elected to climb to 8500 ft and departed the air traffic area to the south to fly in an uncongested area to troubleshoot the electrical system. We were able to reset the over voltage relay and restore power to electrical system. We contacted cys approach and reported position and cancelled IFR.

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Original NASA ASRS Text

Title: GA PLT LOST ALL ACFT ELECTRICAL PWR RADIO COMS AT THE MISSED APCH POINT DURING A PRACTICE ILS INST APCH IN A SMALL SEL ACFT.

Narrative: DURING AN ILS PRACTICE APCH NOTICED THE AMMETER NEAR 0 AND CONSIDERED POSSIBILITY OF A FAULTY GAUGE. WHEN INITIATING MISSED APCH AND DURING RECEPTION OF MISSED APCH INSTRUCTION, EXPERIENCED TOTAL ELECTRICAL FAILURE. KNOWING THAT OTHER ACFT WERE CLRED TO LAND ON BOTH RWYS 30 AND 26, WE ELECTED TO CLB TO 8500 FT AND DEPARTED THE ATA TO THE S TO FLY IN AN UNCONGESTED AREA TO TROUBLESHOOT THE ELECTRICAL SYS. WE WERE ABLE TO RESET THE OVER VOLTAGE RELAY AND RESTORE PWR TO ELECTRICAL SYS. WE CONTACTED CYS APCH AND RPTED POS AND CANCELLED IFR.

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.