Small aircraft on IFR flight plan has transponder, radio problems in TCA.

Attributes
ACN	223644
Time
Date	199210
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : lax
State Reference	CA
Altitude	msl bound lower : 6000 msl bound upper : 6000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : lax
Operator	general aviation : instructional
Make Model Name	Small Aircraft
Flight Phase	cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : atp
Experience	flight time last 90 days : 40 flight time total : 2700 flight time type : 600
ASRS Report	223644
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

I found out later there was an interruption of electrical power going to the flight instruments/avionics. The most important point to be made here is the lack of a VFR corridor/transition route through the los angeles TCA that would not require radio contact before entering as has been in the past. I followed the last vectors out of the TCA before contact was lost.

Original NASA ASRS Text

Title: SMA ON IFR FLT PLAN HAS TRANSPONDER, RADIO PROBLEMS IN TCA.

Narrative: I FOUND OUT LATER THERE WAS AN INTERRUPTION OF ELECTRICAL PWR GOING TO THE FLT INSTS/AVIONICS. THE MOST IMPORTANT POINT TO BE MADE HERE IS THE LACK OF A VFR CORRIDOR/TRANSITION RTE THROUGH THE LOS ANGELES TCA THAT WOULD NOT REQUIRE RADIO CONTACT BEFORE ENTERING AS HAS BEEN IN THE PAST. I FOLLOWED THE LAST VECTORS OUT OF THE TCA BEFORE CONTACT WAS LOST.

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.