Narrative:

I was doing some flight training in the local area. The WX was marginal VFR. We climbed above the clouds to do the training. I could see the ground the entire time we were up. We were between the clouds. I was using an island in a lake for a reference to my location. When I got close to the island, it was not the one I thought it should be. I told the student to turn and descend as quickly as possible. The other way I realized I was in the wrong place was that I was listening to salt lake approach and I heard them call traffic to another aircraft. That traffic was me. What caused the problem was the low visibility. I could not see all of the lake and I assumed the island I saw was the right one. I do not know what could correct the situation. I made a mistake in navigation. The best way to prevent this from happening again, is for me to double-check my navigation.

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Original NASA ASRS Text

Title: A FLT INSTRUCTOR WITH STUDENT PLT HAS NAV ERROR IN WHICH HE MAY HAVE ENTERED THE CLASS B AIRSPACE WITHOUT CLRNC.

Narrative: I WAS DOING SOME FLT TRAINING IN THE LCL AREA. THE WX WAS MARGINAL VFR. WE CLBED ABOVE THE CLOUDS TO DO THE TRAINING. I COULD SEE THE GND THE ENTIRE TIME WE WERE UP. WE WERE BTWN THE CLOUDS. I WAS USING AN ISLAND IN A LAKE FOR A REF TO MY LOCATION. WHEN I GOT CLOSE TO THE ISLAND, IT WAS NOT THE ONE I THOUGHT IT SHOULD BE. I TOLD THE STUDENT TO TURN AND DSND AS QUICKLY AS POSSIBLE. THE OTHER WAY I REALIZED I WAS IN THE WRONG PLACE WAS THAT I WAS LISTENING TO SALT LAKE APCH AND I HEARD THEM CALL TFC TO ANOTHER ACFT. THAT TFC WAS ME. WHAT CAUSED THE PROB WAS THE LOW VISIBILITY. I COULD NOT SEE ALL OF THE LAKE AND I ASSUMED THE ISLAND I SAW WAS THE RIGHT ONE. I DO NOT KNOW WHAT COULD CORRECT THE SIT. I MADE A MISTAKE IN NAV. THE BEST WAY TO PREVENT THIS FROM HAPPENING AGAIN, IS FOR ME TO DOUBLE-CHK MY NAV.

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.