An small aircraft spi had a radio failure right after takeoff.

Attributes
ACN	245183
Time
Date	199306
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : pao
State Reference	CA
Altitude	msl bound lower : 800 msl bound upper : 800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : pao
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	climbout : initial
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : student
ASRS Report	245183
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

I requested a straight out departure to san carlos air traffic area from palo alto ATC with no problem with the radio, received frequency change approval from palo alto ATC. After turning to san carlos ATC, I had 2-WAY radio failure and decided to turn back to palo alto air traffic area and squawk 7600 and request light signal to land. Problem may have been caused by the heat and windshield shades may help when parked at the ramp.

Original NASA ASRS Text

Title: AN SMA SPI HAD A RADIO FAILURE RIGHT AFTER TKOF.

Narrative: I REQUESTED A STRAIGHT OUT DEP TO SAN CARLOS ATA FROM PALO ALTO ATC WITH NO PROB WITH THE RADIO, RECEIVED FREQ CHANGE APPROVAL FROM PALO ALTO ATC. AFTER TURNING TO SAN CARLOS ATC, I HAD 2-WAY RADIO FAILURE AND DECIDED TO TURN BACK TO PALO ALTO ATA AND SQUAWK 7600 AND REQUEST LIGHT SIGNAL TO LAND. PROB MAY HAVE BEEN CAUSED BY THE HEAT AND WINDSHIELD SHADES MAY HELP WHEN PARKED AT THE RAMP.

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.