Narrative:

I was departing mitchell; sd (mhe); in the dark. Before taxi; I clicked the radio microphone 7 times on the unicom frequency of 122.8 and the runway lights and taxiway lights came up to bright as expected. After taxiing to runway 35 and doing a run-up; we started a takeoff roll on runway 35 at which time I clicked the microphone 3 times to dim the runway lights. At that point the runway lights on runway 17/35 went out; but runway 12/30 went dim. We were able to click the microphone 7 times again and get them back on. However; I don't think they should be going out completely when I try to dim them. I did have a much similar situation last fall/early winter. I'm not sure of the exact date; but on short final for runway 17; I went to dim the lights and they went out completely on runway 17/35; but runway 12/30 stayed lit. The next day I did call the manager listed in the south dakota airport directory and report it. He told me he would look into it.

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Original NASA ASRS Text

Title: PILOT REPORTS THAT RWY 17/35 LIGHTS AT MHE DO NOT HAVE A MEDIUM SETTING WHEN BEING CONTROLLED WITH MIKE CLICKS; ONLY ON OR OFF.

Narrative: I WAS DEPARTING MITCHELL; SD (MHE); IN THE DARK. BEFORE TAXI; I CLICKED THE RADIO MIKE 7 TIMES ON THE UNICOM FREQ OF 122.8 AND THE RWY LIGHTS AND TXWY LIGHTS CAME UP TO BRIGHT AS EXPECTED. AFTER TAXIING TO RWY 35 AND DOING A RUN-UP; WE STARTED A TKOF ROLL ON RWY 35 AT WHICH TIME I CLICKED THE MIKE 3 TIMES TO DIM THE RWY LIGHTS. AT THAT POINT THE RWY LIGHTS ON RWY 17/35 WENT OUT; BUT RWY 12/30 WENT DIM. WE WERE ABLE TO CLICK THE MIKE 7 TIMES AGAIN AND GET THEM BACK ON. HOWEVER; I DON'T THINK THEY SHOULD BE GOING OUT COMPLETELY WHEN I TRY TO DIM THEM. I DID HAVE A MUCH SIMILAR SITUATION LAST FALL/EARLY WINTER. I'M NOT SURE OF THE EXACT DATE; BUT ON SHORT FINAL FOR RWY 17; I WENT TO DIM THE LIGHTS AND THEY WENT OUT COMPLETELY ON RWY 17/35; BUT RWY 12/30 STAYED LIT. THE NEXT DAY I DID CALL THE MGR LISTED IN THE SOUTH DAKOTA ARPT DIRECTORY AND RPT IT. HE TOLD ME HE WOULD LOOK INTO IT.

Data retrieved from NASA's ASRS site as of January 2009 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.