Narrative:

I embarked on a VFR flight from fcm to bde at approximately H45 am, sat, oct. FSS advised of possible morning ground fog -- no restrictions. Ground fog at bde precluded landing. Ground visibility to northwest indicated to southwest indicated clear conditions. I diverted to warroad, approximately 30 mi northwest of bde. Sufficient ground fog existed at warroad requiring approximately a 20-25 min delay. I decided to circle the airport area. A clearing existed approximately 2 mi northwest of the airport and conditions were improving for a VFR landing. I reduced power and deployed full flaps circling until safe conditions existed. I landed #2 behind a single engine small aircraft that was also circling after an approximately 30 min delay. I believe the contributing factor was operating in a so-called circling or holding mode waiting for the ground fog to dissipate. This procedure was not a familiar or common sequence, and I simply failed to drop the gear on final approach.

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Original NASA ASRS Text

Title: AN SMA PLT LANDED GEAR UP.

Narrative: I EMBARKED ON A VFR FLT FROM FCM TO BDE AT APPROX H45 AM, SAT, OCT. FSS ADVISED OF POSSIBLE MORNING GND FOG -- NO RESTRICTIONS. GND FOG AT BDE PRECLUDED LNDG. GND VISIBILITY TO NW INDICATED TO SW INDICATED CLR CONDITIONS. I DIVERTED TO WARROAD, APPROX 30 MI NW OF BDE. SUFFICIENT GND FOG EXISTED AT WARROAD REQUIRING APPROX A 20-25 MIN DELAY. I DECIDED TO CIRCLE THE ARPT AREA. A CLRING EXISTED APPROX 2 MI NW OF THE ARPT AND CONDITIONS WERE IMPROVING FOR A VFR LNDG. I REDUCED PWR AND DEPLOYED FULL FLAPS CIRCLING UNTIL SAFE CONDITIONS EXISTED. I LANDED #2 BEHIND A SINGLE ENG SMA THAT WAS ALSO CIRCLING AFTER AN APPROX 30 MIN DELAY. I BELIEVE THE CONTRIBUTING FACTOR WAS OPERATING IN A SO-CALLED CIRCLING OR HOLDING MODE WAITING FOR THE GND FOG TO DISSIPATE. THIS PROC WAS NOT A FAMILIAR OR COMMON SEQUENCE, AND I SIMPLY FAILED TO DROP THE GEAR ON FINAL APCH.

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.