Narrative:

I had been cleared direct navasota weesat 2 arrival into west houston and had been given a crossing altitude of 4000 ft, 5 mi southeast of navasota. Upon reaching navasota, the controller then clears me direct marten intersection which was not on my arrival plate. In the confusion trying to find the intersection, with the autoplt set for the descent, I went through the cleared altitude and caught the mistake and climbed immediately back to 4000 ft. After being cleared to a waypoint and being put on an arrival, I had placed my lo chart on the floor to reduce clutter. When on an arrival I've not been asked to fly to an intersection that was not on the arrival.

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Original NASA ASRS Text

Title: A PLT OF AN SMT DSNDING INTO IAH, TX, AIRSPACE DROPS HIS MAP ON THE FLOOR AND DEVIATES FROM CLRED ALT WHILE HE LOOKS FOR IT.

Narrative: I HAD BEEN CLRED DIRECT NAVASOTA WEESAT 2 ARR INTO W HOUSTON AND HAD BEEN GIVEN A XING ALT OF 4000 FT, 5 MI SE OF NAVASOTA. UPON REACHING NAVASOTA, THE CTLR THEN CLRS ME DIRECT MARTEN INTXN WHICH WAS NOT ON MY ARR PLATE. IN THE CONFUSION TRYING TO FIND THE INTXN, WITH THE AUTOPLT SET FOR THE DSCNT, I WENT THROUGH THE CLRED ALT AND CAUGHT THE MISTAKE AND CLBED IMMEDIATELY BACK TO 4000 FT. AFTER BEING CLRED TO A WAYPOINT AND BEING PUT ON AN ARR, I HAD PLACED MY LO CHART ON THE FLOOR TO REDUCE CLUTTER. WHEN ON AN ARR I'VE NOT BEEN ASKED TO FLY TO AN INTXN THAT WAS NOT ON THE ARR.

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.