A C182 CLBS TO ALT DEPARTING FROM RKS; WY; WHEN HE OVERSHOT ASSIGNED ALT JUST AS ZLC; UT; CTLR GIVES HIM ANOTHER ASSIGNED ALT.

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ASRS DESCRIPTION OF A 400 FT ALT CLRNC DEV BY MY ACFT AT ABOUT (AD00 MDT) ON AUG/XX/97; DEPARTING ROCK SPRINGS; WY ARPT CLBING ON V6 THROUGH 10400 FT. I HAD FILED AN IFR FLT PLAN FROM RKS TO PVU (ROCK SPRINGS; WY; TO PROVO; UT) WITH REQUESTED ROUTING AS RKS (ARPT) DIRECT FBR (VOR) DIRECT SLC (VOR) DIRECT PVU AT 10000 FT. I PROGRAMMED THAT ROUTING INTO MY IFR CERTIFIED LORAN C AND REQUESTED CLRNC AT THE DEP END OF RWY 27. AS BEST I RECALL; I WAS CLRED TO PVU AS FILED VIA V6; CLB MAINTAIN 10000 FT; AND CONTACT CTR WHEN AIRBORNE. AFTER DEP; I CONTACTED CTR WHO NOTED RADAR CONTACT. AS I REVIEWED MY CLRNC; I NOTED THAT MY RTE WAS TO BE V6 INSTEAD OF DIRECT. THE LORAN RTE SEGMENT ENDPOINTS I HAD PROGRAMMED WERE DEFINED BY THE ROCK SPRINGS ARPT AND THE FBR VOR; NOT THE OCS VOR AND FBR VOR THAT DEFINE V6. I HAD A STABILIZED CLB BY NOW OF AROUND 500 FPM AND WAS PASSING THROUGH ABOUT 8500 FT MSL. SO I SET ABOUT CHANGING THE LORAN PROGRAMMING. ABOUT THE TIME I FINISHED; CTR CALLED ME AND CLRED ME TO 12000 FT FOR TERRAIN. I GLANCED AT MY ALTIMETER PASSING 10400 FT AND REPLIED 'CESSNA XX OUT OF ONE ZERO THOUSAND FIVE HUNDRED FOR ONE TWO THOUSAND.' I IMMEDIATELY REALIZED I HAD OVERSHOT MY CLB AND WAS ABOUT TO PUSH IT BACK DOWN WHEN THE CTLR ASKED ME WHAT I WAS DOING UP AT 10500 FT AND IF I HAD JUST OVERSHOT MY CLB. I REPLIED 'AFFIRMATIVE' AND CONTINUED MY CLB UP TO 12000 FT. NOTHING MORE WAS SAID ABOUT THE MATTER. THE PROB OCCURRED BECAUSE: 1) I RECEIVED A ROUTING CLRNC THAT WAS 'AS FILED;' BUT WITH A PROVISO THAT IT WAS VIA V6. 2) I DIDN'T IMMEDIATELY RECOGNIZE THAT THE CLRNC WAS NOT AS I HAD PROGRAMMED THE LORAN. 3) I WAS TRYING TO CHANGE MY LORAN PROGRAMMING DURING A PORTION OF THE FLT THAT I SHOULD HAVE BEEN PAYING MORE ATTN TO MY BASIC INSTS. 4) AFTERNOON UPDRAFTS CONSIDERABLY INCREASED MY RATE OF CLB BEYOND THE 500 FPM I HAD NOTED WHEN I FIRST TURNED MY ATTN TO THE LORAN. TO PREVENT THIS PROB FROM REOCCURRING; I INTEND TO STUDY MY CLRNC MORE CLOSELY AND ENSURE THAT MY NAV EQUIP IS FULLY AND CORRECTLY PROGRAMMED BEFORE DEP. IF I NEED TO DO REPROGRAMMING INFLT; I WILL ATTEMPT TO DELAY IT TO A LESS ATTN-DEMANDING PORTION OF THE FLT. IF THAT'S NOT POSSIBLE; I WILL REMEMBER THAT FLYING THE AIRPLANE IS STILL THE MOST IMPORTANT ITEM; WITH NAV AND COM COMING ON AN 'AS-TIME-PERMITS' BASIS.