Narrative:

Flight from dfw to mco at 410. Rerted from original flight plan to fly after tlh, J43, pie, lal, orl. Descending into the lal VORTAC ara, cleared to fly to lal, then proceed outbnd on the lal 060 degree right and to anticipate radar vectors to runway 18R at orl. We understood miami center to clear us to the local 060 degree/13 NM at 10000'. At about 10500', was asked to confirm our altitude. We stated we were 10500' descending with 1.9 NM to go to assigned 10000'. They advised we were cleared to 13000'? At that point we advised that we had read back 10000' with no challenge or correction but would return to 13000'. They advised to stay at 10000' and contact orlando approach on 134.05. All events after that were normal uneventful. We made the landing at mco. This was our eighth trip into mco this month. On every flight, we have been rerted down from tlh to lakeland as my reports states. In each case, below 18000' we are given more than enough clrncs, crossing restrictions, altitude and airspeed changes. A two man glass cockpit gets very busy below 18000' west/O the additional hassles of airspeed, altitude restrictions and clrncs. This particular day, we were given 3 different runway and heading changes within 10 mi of the airport while turning onto the localizer 18R. Recommend: not so many route, speed, altitude changes in such a relatively short period, ie, descending into airport boundaries, traffic area when workload is highest. Supplemental information from acn 162638. Have yet to fly the filed and cleared original routing. There are two lal radio fixes in our data base and have twice had to enter latitude/long coords this month to get the proper lal. Happen to have been trying to copy ATIS when clearance to descend to 13000' was given. PNF read back altitude but PF set the altitude in the altitude window. Center did not happen to catch the incorrect readback. Had programmed lal 060 degree/10 NM. Changed that to lal 060 degree/13 NM. Then added lal 060 degree/20 NM to give a reference point to the autoplt to track to. Recommendations: give initial routing and clearance the way they plan to use the arrival. Then the program can be put into the computer in a time of light workload rather than a very busy time. Changeover, ATIS, rerouting, before landing and descent checks, etc.

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Original NASA ASRS Text

Title: MISREAD ASSIGNED ALT. READBACK NOT COPIED BY CTLR.

Narrative: FLT FROM DFW TO MCO AT 410. RERTED FROM ORIGINAL FLT PLAN TO FLY AFTER TLH, J43, PIE, LAL, ORL. DSNDING INTO THE LAL VORTAC ARA, CLRED TO FLY TO LAL, THEN PROCEED OUTBND ON THE LAL 060 DEG R AND TO ANTICIPATE RADAR VECTORS TO RWY 18R AT ORL. WE UNDERSTOOD MIAMI CTR TO CLR US TO THE LCL 060 DEG/13 NM AT 10000'. AT ABOUT 10500', WAS ASKED TO CONFIRM OUR ALT. WE STATED WE WERE 10500' DSNDING WITH 1.9 NM TO GO TO ASSIGNED 10000'. THEY ADVISED WE WERE CLRED TO 13000'? AT THAT POINT WE ADVISED THAT WE HAD READ BACK 10000' WITH NO CHALLENGE OR CORRECTION BUT WOULD RETURN TO 13000'. THEY ADVISED TO STAY AT 10000' AND CONTACT ORLANDO APCH ON 134.05. ALL EVENTS AFTER THAT WERE NORMAL UNEVENTFUL. WE MADE THE LNDG AT MCO. THIS WAS OUR EIGHTH TRIP INTO MCO THIS MONTH. ON EVERY FLT, WE HAVE BEEN RERTED DOWN FROM TLH TO LAKELAND AS MY RPTS STATES. IN EACH CASE, BELOW 18000' WE ARE GIVEN MORE THAN ENOUGH CLRNCS, XING RESTRICTIONS, ALT AND AIRSPD CHANGES. A TWO MAN GLASS COCKPIT GETS VERY BUSY BELOW 18000' W/O THE ADDITIONAL HASSLES OF AIRSPD, ALT RESTRICTIONS AND CLRNCS. THIS PARTICULAR DAY, WE WERE GIVEN 3 DIFFERENT RWY AND HDG CHANGES WITHIN 10 MI OF THE ARPT WHILE TURNING ONTO THE LOC 18R. RECOMMEND: NOT SO MANY RTE, SPD, ALT CHANGES IN SUCH A RELATIVELY SHORT PERIOD, IE, DSNDING INTO ARPT BOUNDARIES, TFC AREA WHEN WORKLOAD IS HIGHEST. SUPPLEMENTAL INFO FROM ACN 162638. HAVE YET TO FLY THE FILED AND CLRED ORIGINAL RTING. THERE ARE TWO LAL RADIO FIXES IN OUR DATA BASE AND HAVE TWICE HAD TO ENTER LAT/LONG COORDS THIS MONTH TO GET THE PROPER LAL. HAPPEN TO HAVE BEEN TRYING TO COPY ATIS WHEN CLRNC TO DSND TO 13000' WAS GIVEN. PNF READ BACK ALT BUT PF SET THE ALT IN THE ALT WINDOW. CTR DID NOT HAPPEN TO CATCH THE INCORRECT READBACK. HAD PROGRAMMED LAL 060 DEG/10 NM. CHANGED THAT TO LAL 060 DEG/13 NM. THEN ADDED LAL 060 DEG/20 NM TO GIVE A REFERENCE POINT TO THE AUTOPLT TO TRACK TO. RECOMMENDATIONS: GIVE INITIAL RTING AND CLRNC THE WAY THEY PLAN TO USE THE ARR. THEN THE PROGRAM CAN BE PUT INTO THE COMPUTER IN A TIME OF LIGHT WORKLOAD RATHER THAN A VERY BUSY TIME. CHANGEOVER, ATIS, REROUTING, BEFORE LNDG AND DSNT CHKS, ETC.

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.