Narrative:

I was on an IFR flight plan from 66Y or diamondhead, ms, to alexandria international when approach control instructed me to descend to assigned altitude of 5000 ft MSL. The WX was raining, cloudy and had moderate turbulence. I started my descent and was instructed to expect the VOR approach to runway 32. I got too preoccupied and distracted by a burst of hard rain and watching the radar and setting the instruments for the VOR approach and studying the approach plate. I had the autoplt on when I checked my altitude I realized I was below my assigned altitude. I pulled up and about the same time the controller asked me my altitude. I told approach I was at 4500 ft climbing back to my assigned altitude of 5000 ft. There is no excuse for the error other than I got too preoccupied with the radar and approach plate. I personally want to apologize for the mistake. I understand how dangerous the error was.

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Original NASA ASRS Text

Title: RPTR ERROR ADMITTED IN ALTDEV ALT OVERSHOT IN DSCNT.

Narrative: I WAS ON AN IFR FLT PLAN FROM 66Y OR DIAMONDHEAD, MS, TO ALEXANDRIA INTL WHEN APCH CTL INSTRUCTED ME TO DSND TO ASSIGNED ALT OF 5000 FT MSL. THE WX WAS RAINING, CLOUDY AND HAD MODERATE TURB. I STARTED MY DSCNT AND WAS INSTRUCTED TO EXPECT THE VOR APCH TO RWY 32. I GOT TOO PREOCCUPIED AND DISTRACTED BY A BURST OF HARD RAIN AND WATCHING THE RADAR AND SETTING THE INSTS FOR THE VOR APCH AND STUDYING THE APCH PLATE. I HAD THE AUTOPLT ON WHEN I CHKED MY ALT I REALIZED I WAS BELOW MY ASSIGNED ALT. I PULLED UP AND ABOUT THE SAME TIME THE CTLR ASKED ME MY ALT. I TOLD APCH I WAS AT 4500 FT CLBING BACK TO MY ASSIGNED ALT OF 5000 FT. THERE IS NO EXCUSE FOR THE ERROR OTHER THAN I GOT TOO PREOCCUPIED WITH THE RADAR AND APCH PLATE. I PERSONALLY WANT TO APOLOGIZE FOR THE MISTAKE. I UNDERSTAND HOW DANGEROUS THE ERROR WAS.

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.