Instructor with spi has radio fail departing arsa. Squawk 7600 to return.

Attributes
ACN	186622
Time
Date	199108
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : sna
State Reference	CA
Altitude	msl bound lower : 2000 msl bound upper : 3000
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : sna tower : sna
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	descent other landing other
Flight Plan	VFR
Person 1
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : commercial pilot : cfi pilot : instrument
Experience	flight time last 90 days : 30 flight time total : 720 flight time type : 60
ASRS Report	186622
Person 2
Affiliation	Other
Function	flight crew : single pilot instruction : trainee
Qualification	pilot : student
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : unable other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Departing sna, ca, for a primary training flight in an small aircraft. After departure the radio became intermittent. After clearing the arsa I squawked 1200 and continued the lesson. I tried all that I could to get the radio to work. Squawking 7600 I transmitted in the blind to coast approach stating my intentions and situation. After entering the arsa, I stated and switched frequency to orange county tower. I stated my intentions and situation, transmitting in the blind. I received appropriate light gun signals to land, then to taxi back. I did notice a jet going around.

Original NASA ASRS Text

Title: INSTRUCTOR WITH SPI HAS RADIO FAIL DEPARTING ARSA. SQUAWK 7600 TO RETURN.

Narrative: DEPARTING SNA, CA, FOR A PRIMARY TRAINING FLT IN AN SMA. AFTER DEP THE RADIO BECAME INTERMITTENT. AFTER CLRING THE ARSA I SQUAWKED 1200 AND CONTINUED THE LESSON. I TRIED ALL THAT I COULD TO GET THE RADIO TO WORK. SQUAWKING 7600 I XMITTED IN THE BLIND TO COAST APCH STATING MY INTENTIONS AND SITUATION. AFTER ENTERING THE ARSA, I STATED AND SWITCHED FREQ TO ORANGE COUNTY TWR. I STATED MY INTENTIONS AND SITUATION, XMITTING IN THE BLIND. I RECEIVED APPROPRIATE LIGHT GUN SIGNALS TO LAND, THEN TO TAXI BACK. I DID NOTICE A JET GOING AROUND.

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.