Narrative:

I was on a training flight with a student from toa to ccd. I noticed my student was about to encroach on class C airspace. I should have turned the plane but I thought I could get clearance in time. By mistake I called van nuys tower for clearance. They gave me clearance through their airspace and I had thought they work clearance through the class C. I might have caught all of this but my student became very defensive and demanded an explanation. As I was talking to my student tower came back and informed me I was inside class C and that I should descend to 2500 ft from 4500 ft. At this point my student is demanding to know what's wrong. After stopping him from talking to me I am finally able to call tower and get through to explain what I had done wrong. I should have had more control over my flight. I am sorry.

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Original NASA ASRS Text

Title: INSTRUCTOR IN A CESSNA 172 ALLOWED HIS STUDENT, DURING XCOUNTRY FLT, TO ENTER CLASS C AIRSPACE WITHOUT PERMISSION SINCE HE HAD CONTACTED THE WRONG FACILITY FOR CLRNC.

Narrative: I WAS ON A TRAINING FLT WITH A STUDENT FROM TOA TO CCD. I NOTICED MY STUDENT WAS ABOUT TO ENCROACH ON CLASS C AIRSPACE. I SHOULD HAVE TURNED THE PLANE BUT I THOUGHT I COULD GET CLRNC IN TIME. BY MISTAKE I CALLED VAN NUYS TWR FOR CLRNC. THEY GAVE ME CLRNC THROUGH THEIR AIRSPACE AND I HAD THOUGHT THEY WORK CLRNC THROUGH THE CLASS C. I MIGHT HAVE CAUGHT ALL OF THIS BUT MY STUDENT BECAME VERY DEFENSIVE AND DEMANDED AN EXPLANATION. AS I WAS TALKING TO MY STUDENT TWR CAME BACK AND INFORMED ME I WAS INSIDE CLASS C AND THAT I SHOULD DSND TO 2500 FT FROM 4500 FT. AT THIS POINT MY STUDENT IS DEMANDING TO KNOW WHAT'S WRONG. AFTER STOPPING HIM FROM TALKING TO ME I AM FINALLY ABLE TO CALL TWR AND GET THROUGH TO EXPLAIN WHAT I HAD DONE WRONG. I SHOULD HAVE HAD MORE CTL OVER MY FLT. I AM SORRY.

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.