HDG TRACK DEV DURING A NON ADHERENCE TO ATC CLRNC PROC INSTRUCTION.

Narrative

IT WAS AN EVENING INST TRAINING FLT; I WAS THE FLT INSTRUCTOR; INSTRUCTING FROM THE R SEAT WITH THE STUDENT WEARING A HOOD (VIEW LIMITING DEVICE). THE ACFT INVOLVED WAS A PA28-140. THIS WAS THE 1ST LESSON IN WHICH MY STUDENT FILED AND ACTIVATED AN IFR FLT PLAN. THIS PARTICULAR RTE THAT WE TOOK HAD BEEN ONE IN WHICH I OFTEN HAVE MY STUDENTS FLY AS THEIR FIRST FLT UNDER AN IFR FLT PLAN. I HAVE BECOME ACCUSTOMED TO THE ATC CLRNCS AND PROCS FOR HANDLING ACFT ON THIS PARTICULAR RTE ONLY BECAUSE OF THE FREQUENCY IN WHICH I FLY IT WITH OTHER STUDENTS. ON THIS PARTICULAR INCIDENT WE WERE CLRED FOR A FREQ CHANGE AFTER WE WERE ESTABLISHED INBOUND JUST PRIOR TO THE FAF ON THE NDB RWY 23 AT RNC. WE WERE INSTRUCTED BY ZME TO RETURN TO HIS FREQ AT THE MISSED APCH. UPON REACHING THE MISSED APCH POINT; I TOLD MY STUDENT TO START A R CLBING TURN TO A HDG OF 280 DEGS. I THEN TOLD HIM TO CONTACT MEMPHIS AND RPT MISSED APCH. ZME THEN GAVE US THE FOLLOWING CLRNC: 'CLB TO 4000 FT; EXPECT FURTHER CLRNC TO MBT NDB UPON REACHING 4000 FT.' MEANWHILE; WE WERE OUT OF 3000 FT; CLBING FOR 4000 FT STILL AT OUR HDG OF 280 DEGS. THE HDG OF 280 DEGS IS WHAT ATC NORMALLY ALLOWS FOR DIRECT MBT. AT 3600 FT ZME CALLED AND ASKED IF WE WERE PROCEEDING DIRECT TO RN NDB WHICH WOULD HAVE HAD US ON A NEBOUND HDG AS INSTRUCTED BY THE PUBLISHED MISSED APCH PROCS. I TOLD MEMPHIS; NEGATIVE AND STATED THAT WE WERE PROCEEDING TOWARD MBT NDB; AS WHAT THOUGHT HE WANTED US TO DO. THE CTLR THEN; IN A DISTURBED VOICE; TOLD US THAT WE WEREN'T CLRED TO MBT NDB AND THAT WE WERE TO FOLLOW THE MISSED APCH PROCS AS PUBLISHED. I THEN TOLD THE CTLR AND MY STUDENT THAT WE WERE TURNING TOWARD RN NDB. SHORTLY AFTER HE (MY STUDENT) STARTED HIS R TURN TOWARD THE RN NDB WE WERE CLRED TO MBT NDB AND FROM THAT POINT ON; THE FLT WAS UNEVENTFUL.