Narrative:

Departed home field to pick up friends at 5r3, lago vista, tx. I had printed the airport chart and checked for airport NOTAMS on the commercial chart service I subscribe to. On final approach to runway 18, I noticed a yellow 'X' on the runway. I executed a go around and low pass to survey the field. I also checked the NOTAMS again on my onboard database. Once again, there were none. The grass area of the airport that I usually land on appeared suitable. Most of my flying with the C180 is on unimproved surfaces. I landed on the unimproved section, loaded my passenger and departed without any incident. Upon landing at my final destination, I checked the FAA NOTAMS and found one for the 'airport' being closed. With the information I had at the time, I assumed just the hard surface runway was closed -- not the entire airport. At no time did I operate from the runway being resurfaced. After becoming aware of the complete status of the airport, on return, I landed at another facility and shuttled my passenger to their car at 5r3 by car. I informed commercial chart service of the omittance in their database. Commercial chart service said they would make the NOTAM correction -- effective aug/mon/02.

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Original NASA ASRS Text

Title: C180 ATP RATED PLT LANDED OFF RWY IN GRASS AFTER NOTICING THE HARD SURFACE RWY X'ED CLOSED. HE LATER LEARNED THAT THE ENTIRE ARPT WAS NOTAMED CLOSED.

Narrative: DEPARTED HOME FIELD TO PICK UP FRIENDS AT 5R3, LAGO VISTA, TX. I HAD PRINTED THE ARPT CHART AND CHKED FOR ARPT NOTAMS ON THE COMMERCIAL CHART SVC I SUBSCRIBE TO. ON FINAL APCH TO RWY 18, I NOTICED A YELLOW 'X' ON THE RWY. I EXECUTED A GAR AND LOW PASS TO SURVEY THE FIELD. I ALSO CHKED THE NOTAMS AGAIN ON MY ONBOARD DATABASE. ONCE AGAIN, THERE WERE NONE. THE GRASS AREA OF THE ARPT THAT I USUALLY LAND ON APPEARED SUITABLE. MOST OF MY FLYING WITH THE C180 IS ON UNIMPROVED SURFACES. I LANDED ON THE UNIMPROVED SECTION, LOADED MY PAX AND DEPARTED WITHOUT ANY INCIDENT. UPON LNDG AT MY FINAL DEST, I CHKED THE FAA NOTAMS AND FOUND ONE FOR THE 'ARPT' BEING CLOSED. WITH THE INFO I HAD AT THE TIME, I ASSUMED JUST THE HARD SURFACE RWY WAS CLOSED -- NOT THE ENTIRE ARPT. AT NO TIME DID I OPERATE FROM THE RWY BEING RESURFACED. AFTER BECOMING AWARE OF THE COMPLETE STATUS OF THE ARPT, ON RETURN, I LANDED AT ANOTHER FACILITY AND SHUTTLED MY PAX TO THEIR CAR AT 5R3 BY CAR. I INFORMED COMMERCIAL CHART SVC OF THE OMITTANCE IN THEIR DATABASE. COMMERCIAL CHART SVC SAID THEY WOULD MAKE THE NOTAM CORRECTION -- EFFECTIVE AUG/MON/02.

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.