GA pilot experiences electrical problems and intermittent radio communication problem.

Attributes
ACN	170206
Time
Date	199102
Day	Fri
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : bna
State Reference	TN
Altitude	msl bound lower : 7000 msl bound upper : 7000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other
Route In Use	enroute airway : v140
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : cfi pilot : commercial pilot : instrument
Experience	flight time last 90 days : 120 flight time total : 720 flight time type : 4
ASRS Report	170206
Person 2
Affiliation	government : faa
Function	controller : departure
Qualification	controller : radar
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : declared emergency flight crew : overcame equipment problem other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

While in cruise flight, the pilot noticed a surging on the speaker. Strobes were turned off and problem was corrected. Approximately 1-2 mins later when trying to contact departure all electrical equipment went dead. Non essential equipment was turned off and ATC was contacted momentarily. Communications were lost once more and contact was not made for approximately 5 mins. In this time 7700 was squawked for 1 min and 7600 thereafter. Communications were repaired, however, due to the fact that we could not maintain 2-WAY communications a continuous plan was cleared to VFR conditions if communications could not be accomplished. We did maintain 2-WAY communication long enough to make an emergency approach to runway 31 at nashville. The landing was uneventful, however, communications were once again lost after landing and light signals were given to parking.

Original NASA ASRS Text

Title: GA PLT EXPERIENCES ELECTRICAL PROBLEMS AND INTERMITTENT RADIO COM PROBLEM.

Narrative: WHILE IN CRUISE FLT, THE PLT NOTICED A SURGING ON THE SPEAKER. STROBES WERE TURNED OFF AND PROB WAS CORRECTED. APPROX 1-2 MINS LATER WHEN TRYING TO CONTACT DEP ALL ELECTRICAL EQUIP WENT DEAD. NON ESSENTIAL EQUIP WAS TURNED OFF AND ATC WAS CONTACTED MOMENTARILY. COMS WERE LOST ONCE MORE AND CONTACT WAS NOT MADE FOR APPROX 5 MINS. IN THIS TIME 7700 WAS SQUAWKED FOR 1 MIN AND 7600 THEREAFTER. COMS WERE REPAIRED, HOWEVER, DUE TO THE FACT THAT WE COULD NOT MAINTAIN 2-WAY COMS A CONTINUOUS PLAN WAS CLRED TO VFR CONDITIONS IF COMS COULD NOT BE ACCOMPLISHED. WE DID MAINTAIN 2-WAY COM LONG ENOUGH TO MAKE AN EMER APCH TO RWY 31 AT NASHVILLE. THE LNDG WAS UNEVENTFUL, HOWEVER, COMS WERE ONCE AGAIN LOST AFTER LNDG AND LIGHT SIGNALS WERE GIVEN TO PARKING.

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.