Narrative:

I was on my descent to land and ATC ask[ed] me if I had the weather and I said I couldn't pick it up yet. So they read me an old weather report. I don't remember the exact weather; but I was certain the wind direction was 270 and the speed was 19 KTS; scattered 600; broken 2;500. I was on the GPS RNAV runway 35. Everything was going fine I was stabilized and I had visual of the runway at 600 feet. The rain was horrible; torrential down pour; it was difficult with the rain to judge my landing flare. I did not think my landing was any longer than usual and I had full flaps and my speed was variable with the gusts. I believe I touched down on the 1;000 foot markings. I touched down and went into reverse I was applying brakes and reverse and I felt like I was on a sheet of ice. There was a couple inches on the runway and I believe I was hydroplaning. The brakes didn't seem to work as I approached the end of the runway. I knew I was too slow to go around so I just kept the airplane straight. I was unable to make the taxi way and skidded off the runway. I shut everything down immediately and did not hear any weird noises in the engines or the landing gear. I walked around the airplane and didn't see any damage just mud on the gear.I'm not sure what I should have done differently. I have landed in worse winds and stopped fine. I have not experienced hydroplaning and in the future I need to divert and not even try to touch down. Circling to another runway was not an option either I did not have visual until 600 feet. The excessive rain really made everything on the landing very distorted and with the gusts it was hard to judge my speed in the flare. If I had a more accurate wind direction I feel I could have prepared my approach for a tail wind situation. If I had known it was going to be a tail wind and not a crosswind I never would have tried the approach to begin with. I would like to know where the center got the wind direction and how old the weather report was.

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Original NASA ASRS Text

Title: PA31 pilot reports landing on a 5;000 foot runway in heavy rain and being unable to stop before the end. He believes that he may have landed with a significant tailwind although the reported wind was a direct crosswind.

Narrative: I was on my descent to land and ATC ask[ed] me if I had the weather and I said I couldn't pick it up yet. So they read me an old weather report. I don't remember the exact weather; but I was certain the wind direction was 270 and the speed was 19 KTS; scattered 600; broken 2;500. I was on the GPS RNAV Runway 35. Everything was going fine I was stabilized and I had visual of the runway at 600 feet. The rain was horrible; torrential down pour; it was difficult with the rain to judge my landing flare. I did not think my landing was any longer than usual and I had full flaps and my speed was variable with the gusts. I believe I touched down on the 1;000 foot markings. I touched down and went into reverse I was applying brakes and reverse and I felt like I was on a sheet of ice. There was a couple inches on the runway and I believe I was hydroplaning. The brakes didn't seem to work as I approached the end of the runway. I knew I was too slow to go around so I just kept the airplane straight. I was unable to make the taxi way and skidded off the runway. I shut everything down immediately and did not hear any weird noises in the engines or the landing gear. I walked around the airplane and didn't see any damage just mud on the gear.I'm not sure what I should have done differently. I have landed in worse winds and stopped fine. I have not experienced hydroplaning and in the future I need to divert and not even try to touch down. Circling to another runway was not an option either I did not have visual until 600 feet. The excessive rain really made everything on the landing very distorted and with the gusts it was hard to judge my speed in the flare. If I had a more accurate wind direction I feel I could have prepared my approach for a tail wind situation. If I had known it was going to be a tail wind and not a crosswind I never would have tried the approach to begin with. I would like to know where the center got the wind direction and how old the weather report was.

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.