Narrative:

While on a local IFR clearance, for practice instrument approachs, airspace became extremely busy. Our aircraft was receiving radar vectors from controller, level cruise at 2000 ft MSL. We were switched to new controller (departure) as we proceeded on assigned eastbound heading. Had some difficulty checking in with new controller, as radio communication was very active. Finally, controller called us, and gave new heading of southeast. After significant amount of time, our aircraft was well outside gliding distance to shoreline, and request was made to ATC for climb and/or turn toward shoreline. ATC gave new sbound heading and 'climb 3500 ft.' CFI verified altitude and heading with student after readback to ATC, and climbing turn was initiated. Reaching 3500 ft on heading, ATC advised 'assigned altitude was 3000 ft.' we immediately descended down to 3000 ft.

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Original NASA ASRS Text

Title: C172 STUDENT, WITH INSTRUCTOR, MISTAKENLY CLBED ABOVE ASSIGNED ALT DURING DEP FOR INST APCH PRACTICE.

Narrative: WHILE ON A LCL IFR CLRNC, FOR PRACTICE INST APCHS, AIRSPACE BECAME EXTREMELY BUSY. OUR ACFT WAS RECEIVING RADAR VECTORS FROM CTLR, LEVEL CRUISE AT 2000 FT MSL. WE WERE SWITCHED TO NEW CTLR (DEP) AS WE PROCEEDED ON ASSIGNED EBOUND HDG. HAD SOME DIFFICULTY CHKING IN WITH NEW CTLR, AS RADIO COM WAS VERY ACTIVE. FINALLY, CTLR CALLED US, AND GAVE NEW HDG OF SE. AFTER SIGNIFICANT AMOUNT OF TIME, OUR ACFT WAS WELL OUTSIDE GLIDING DISTANCE TO SHORELINE, AND REQUEST WAS MADE TO ATC FOR CLB AND/OR TURN TOWARD SHORELINE. ATC GAVE NEW SBOUND HDG AND 'CLB 3500 FT.' CFI VERIFIED ALT AND HDG WITH STUDENT AFTER READBACK TO ATC, AND CLBING TURN WAS INITIATED. REACHING 3500 FT ON HDG, ATC ADVISED 'ASSIGNED ALT WAS 3000 FT.' WE IMMEDIATELY DSNDED DOWN TO 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.