Narrative:

On the above said date I was practicing approachs at vero beach in VFR conditions. I had completed 2 VOR runway 11R approachs executing published missed approach procedures. In both cases, after radar contact with ZMA, I was instructed to climb and maintain 3000 ft. This is a noted 1000 ft increase as compared to the published altitude of 2000 ft. At the completion of my third VOR 11R approach I began executing the published missed approach on a heading of 360 degrees. At an altitude of 700 ft I contacted ZMA and advised them that I was executing missed approach. At this point, I thought that ZMA cleared me to climb and maintain 3000 ft and I continued my climb on the same heading. At 2400 ft ZMA asked me to advise them of my altitude and I told them that I was at 2500 ft. They then advised me to descend and maintain 2000 ft and that there was IFR traffic at my 1 O'clock, 2 mi, wbound. At the same time, they asked me why I was at 2500 ft and I told them that I was cleared by them to climb and maintain 3000 ft. Further they asked me to read the published missed approach instructions and I responded. Immediately after I was told to descend, I commenced the descent procedure. Upon leveling at 2000 ft, I responded level at 2000 ft and that I had the traffic in sight. Soon after, I cancelled my IFR flight plan to return under VFR conditions to vero beach. This whole incident is based upon my understanding that I was cleared to climb and maintain 3000 ft. The supervisor told me (after I called ZMA as I was instructed after I cancelled IFR) after listening to the playback that the only response of the controller after my advisory that I was executing a missed approach was 'roger' and that they thought that I would climb and maintain 2000 ft. The contributing factor to this entire case was probably the fact that I was influenced by the previous 2 missed approach instructions, that is; climb and maintain 3000 ft.

Related reports:

Google
 

Original NASA ASRS Text

Title: PLT OF SMA ACFT OVERSHOT MISSED APCH ALT DUE TO PREVIOUS PRACTICE APCH ATC ALT ASSIGNMENTS.

Narrative: ON THE ABOVE SAID DATE I WAS PRACTICING APCHS AT VERO BEACH IN VFR CONDITIONS. I HAD COMPLETED 2 VOR RWY 11R APCHS EXECUTING PUBLISHED MISSED APCH PROCS. IN BOTH CASES, AFTER RADAR CONTACT WITH ZMA, I WAS INSTRUCTED TO CLB AND MAINTAIN 3000 FT. THIS IS A NOTED 1000 FT INCREASE AS COMPARED TO THE PUBLISHED ALT OF 2000 FT. AT THE COMPLETION OF MY THIRD VOR 11R APCH I BEGAN EXECUTING THE PUBLISHED MISSED APCH ON A HDG OF 360 DEGS. AT AN ALT OF 700 FT I CONTACTED ZMA AND ADVISED THEM THAT I WAS EXECUTING MISSED APCH. AT THIS POINT, I THOUGHT THAT ZMA CLRED ME TO CLB AND MAINTAIN 3000 FT AND I CONTINUED MY CLB ON THE SAME HDG. AT 2400 FT ZMA ASKED ME TO ADVISE THEM OF MY ALT AND I TOLD THEM THAT I WAS AT 2500 FT. THEY THEN ADVISED ME TO DSND AND MAINTAIN 2000 FT AND THAT THERE WAS IFR TFC AT MY 1 O'CLOCK, 2 MI, WBOUND. AT THE SAME TIME, THEY ASKED ME WHY I WAS AT 2500 FT AND I TOLD THEM THAT I WAS CLRED BY THEM TO CLB AND MAINTAIN 3000 FT. FURTHER THEY ASKED ME TO READ THE PUBLISHED MISSED APCH INSTRUCTIONS AND I RESPONDED. IMMEDIATELY AFTER I WAS TOLD TO DSND, I COMMENCED THE DSCNT PROC. UPON LEVELING AT 2000 FT, I RESPONDED LEVEL AT 2000 FT AND THAT I HAD THE TFC IN SIGHT. SOON AFTER, I CANCELLED MY IFR FLT PLAN TO RETURN UNDER VFR CONDITIONS TO VERO BEACH. THIS WHOLE INCIDENT IS BASED UPON MY UNDERSTANDING THAT I WAS CLRED TO CLB AND MAINTAIN 3000 FT. THE SUPVR TOLD ME (AFTER I CALLED ZMA AS I WAS INSTRUCTED AFTER I CANCELLED IFR) AFTER LISTENING TO THE PLAYBACK THAT THE ONLY RESPONSE OF THE CTLR AFTER MY ADVISORY THAT I WAS EXECUTING A MISSED APCH WAS 'ROGER' AND THAT THEY THOUGHT THAT I WOULD CLB AND MAINTAIN 2000 FT. THE CONTRIBUTING FACTOR TO THIS ENTIRE CASE WAS PROBABLY THE FACT THAT I WAS INFLUENCED BY THE PREVIOUS 2 MISSED APCH INSTRUCTIONS, THAT IS; CLB AND MAINTAIN 3000 FT.

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.