Narrative:

In IMC, instructing a student, I requested a change in altitude from 6000 ft to 4000 ft. During the descent, we started to pick up ice. I requested a change in altitude back to 6000 ft. ATC was unable to understand my request. I continued to state our problem and finally changed to another frequency. During my exchange with ATC, the student had stopped the descent and started a climb back to 6000 ft without ATC approval. The cause of the problem was me being distraction and not noticing the student starting his climb. However, I also believe ATC should have changed our frequency before we reached that point in our course so as to allow better communications with our position.

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Original NASA ASRS Text

Title: A CFI'S RPT ON A TRAINING FLT AND AN ALTDEV STEMMING FROM POOR LEVELS OF COM AND WX RELATED FACTORS E OF EVV, IN.

Narrative: IN IMC, INSTRUCTING A STUDENT, I REQUESTED A CHANGE IN ALT FROM 6000 FT TO 4000 FT. DURING THE DSCNT, WE STARTED TO PICK UP ICE. I REQUESTED A CHANGE IN ALT BACK TO 6000 FT. ATC WAS UNABLE TO UNDERSTAND MY REQUEST. I CONTINUED TO STATE OUR PROB AND FINALLY CHANGED TO ANOTHER FREQ. DURING MY EXCHANGE WITH ATC, THE STUDENT HAD STOPPED THE DSCNT AND STARTED A CLB BACK TO 6000 FT WITHOUT ATC APPROVAL. THE CAUSE OF THE PROB WAS ME BEING DISTR AND NOT NOTICING THE STUDENT STARTING HIS CLB. HOWEVER, I ALSO BELIEVE ATC SHOULD HAVE CHANGED OUR FREQ BEFORE WE REACHED THAT POINT IN OUR COURSE SO AS TO ALLOW BETTER COMS WITH OUR POS.

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.