AFTER CAREFULLY CHKING NOTAMS PRIOR TO FLT TO AUO; A CPR CREW ON IFR APCH WERE SURPRISED TO FIND THE RWY 18-36 CLOSED AT THE CTAF ARPT.

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HAD A TRIP TO AUBURN; AL (AUO). GOT A WX BRIEFING FROM DUATS INCLUDING FDC NOTAMS AND NOTAM D'S. ONLY NOTAM GIVEN WAS VOR DME PORTION OF APCH NOT AUTHORIZED. SINCE I WASN'T FLYING AN ACFT SO EQUIPPED; I WASN'T CONCERNED. MY COPLT ALSO RECEIVED A WX BRIEFING VIA DUATS. HE RECEIVED THE SAME INFO ON DUATS ABOUT NOTAMS. YOU CAN IMAGINE MY SURPRISE WHEN I CALLED DOWNWIND FOR RWY 36 ONLY TO BE TOLD BY UNICOM THAT RWY 36 WAS CLOSED. WE SAW THE CONSTRUCTION AREA S OF THE RWY. OTHER THAN BEING EMBARRASSED; THINGS WENT FINE AS IT WAS DAY; VMC WITH GREAT VISIBILITY. EVEN WITHOUT THE INFO FROM UNICOM WE COULD HAVE FIGURED THINGS OUT. WE CHKED PUBLISHED NOTAMS AND FOUND NOTHING. EVEN WHEN WE DEPARTED; WE RECEIVED A WX BRIEF FROM LCL FSS AND RECEIVED NO NOTAMS ON THIS. THE ARPT; OF COURSE; HAD POSTED THE RWY CLOSURE AND THE LACK OF ALL APCHS. IN LIGHT OF THE ASPEN CRASH; AND THE QUESTION SURROUNDING NOTAM DISSEMINATION; I FIND THIS DISTURBING! WHAT IF WE HAD BEEN IMC -- WOULD APCH HAVE CLRED US FOR AN APCH TO A CLOSED RWY? EVEN MORE DISTURBING IS THE SAME THING (LACK OF NOTAM DISSEMINATION) IS TRUE WITH REGARD TO BOWMAN FIELD IN LOUISVILLE. I AM GOING THROUGH FOR DERBY AND CHKED -- NO PUBLISHED NOTAMS; NO FDC NOTAMS; AND ONLY NOTAM 'D' IS 1 RWY CLOSURE. I FOUND OUT ACCIDENTALLY FROM A FRIEND WHO IS A LCL (BOWMAN) PLT. NEEDLESS TO SAY; WITH NO AUTH APCHS; I WILL BE GOING TO JUY FOR THE DERBY. HEADS UP -- JUST BECAUSE YOU'RE NOT TOLD DOESN'T MEAN THERE ARE NO CLOSURES.