Narrative:

Was preparing to land [I] noted that there was a low voltage situation developing. Cleared to land; and while on base leg noted that I could not lower my gear. I turned final and was deciding whether to abort and land on the nearby river when I noted that my radio communication with the tower was failing. I could hear them; however it did not appear that they were receiving me. With another attempt at lowering the gear (unsuccessful); I exited the pattern at low altitude and headed for the river (as an amphibian that seemed to be my best option to minimize personal risk; aircraft damage and interruption of flight operations).before I could reach the river; my engine started to cut out (due to below minimums on voltage) and [I] noticed a large rock quarry pond immediately under my left wing. I diverted into a left downwind to land on the quarry pond and while turning base lost all engine power. I maintained my airspeed to clear trees and power lines and made a successful (though glassy water so a bounce or two) dead-stick landing at the flooded quarry.immediately on touchdown I called my FBO and requested they immediately call the tower and notify them of my successful touchdown with no injuries or damage. (I tried to look up the number on airnav for the tower however was unsuccessful). Airport police were dispatched to assess the situation and I confirmed the lack of injuries or damage.after calling my a&P to come assist in repairs I attempted to ascertain the loss of system voltage.we checked aircraft systems and determined a possible left gear motor problem. The plan was to fly to the [home base] area and land on another body of water and make repairs there. I notified the tower; took off with that intention; however noted warning messages on my mfd (multi-function flight display) of low voltage so immediately returned and landed again on the quarry pond. After further assessment and correction of a loose cable; it was determined that it was safe to attempt a wheel landing [at the airport] which I completed safely; with no incident. Further discovery into the causal chain of events will be conducted to ensure safe continued operation of my aircraft.

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Original NASA ASRS Text

Title: SeaRey pilot reported landing in a quarry after experiencing inflight engine failure.

Narrative: Was preparing to land [I] noted that there was a low voltage situation developing. Cleared to land; and while on base leg noted that I could not lower my gear. I turned final and was deciding whether to abort and land on the nearby river when I noted that my radio communication with the Tower was failing. I could hear them; however it did not appear that they were receiving me. With another attempt at lowering the gear (unsuccessful); I exited the pattern at low altitude and headed for the river (as an amphibian that seemed to be my best option to minimize personal risk; aircraft damage and interruption of flight operations).Before I could reach the river; my engine started to cut out (due to below minimums on voltage) and [I] noticed a large rock quarry pond immediately under my left wing. I diverted into a left downwind to land on the quarry pond and while turning base lost all engine power. I maintained my airspeed to clear trees and power lines and made a successful (though glassy water so a bounce or two) dead-stick landing at the flooded quarry.Immediately on touchdown I called my FBO and requested they immediately call the Tower and notify them of my successful touchdown with NO injuries or damage. (I tried to look up the number on AirNav for the tower however was unsuccessful). Airport police were dispatched to assess the situation and I confirmed the lack of injuries or damage.After calling my A&P to come assist in repairs I attempted to ascertain the loss of system voltage.We checked aircraft systems and determined a possible left gear motor problem. The plan was to fly to the [home base] area and land on another body of water and make repairs there. I notified the Tower; took off with that intention; however noted warning messages on my MFD (Multi-function Flight Display) of low voltage so immediately returned and landed again on the quarry pond. After further assessment and correction of a loose cable; it was determined that it was safe to attempt a wheel landing [at the airport] which I completed safely; with no incident. Further discovery into the causal chain of events will be conducted to ensure safe continued operation of my aircraft.

Data retrieved from NASA's ASRS site 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.