A PA18 pilot lands on a closed airport due to not checking NOTAMS.

Attributes
ACN	603577
Time
Date	200312
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : l52.airport
State Reference	CA
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	PA-18/19 Super Cub
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	descent : approach
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : multi engine pilot : private
Experience	flight time last 90 days : 50 flight time total : 5000 flight time type : 500
ASRS Report	603577
Person 2
Affiliation	Other
Function	other personnel
Events
Anomaly	incursion : runway non adherence : far
Independent Detector	other other : 2
Resolutory Action	none taken : detected after the fact
Supplementary
Problem Areas	Flight Crew Human Performance Airport
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On a sunday pleasure flight, I landed at oceano, ca (L52) airport. I was informed after landing that the airport was closed. I did not check for NOTAMS. I observed on downwind an ultralight aircraft takeoff, and also observed another aircraft landing. There were no X's on the runway. I heard other aircraft announcing position on unicom indicating intentions to land at oceano. If an airport is closed, it should have an 'X' on the runway.

Original NASA ASRS Text

Title: A PA18 PLT LANDS ON A CLOSED ARPT DUE TO NOT CHKING NOTAMS.

Narrative: ON A SUNDAY PLEASURE FLT, I LANDED AT OCEANO, CA (L52) ARPT. I WAS INFORMED AFTER LNDG THAT THE ARPT WAS CLOSED. I DID NOT CHK FOR NOTAMS. I OBSERVED ON DOWNWIND AN ULTRALIGHT ACFT TKOF, AND ALSO OBSERVED ANOTHER ACFT LNDG. THERE WERE NO X'S ON THE RWY. I HEARD OTHER ACFT ANNOUNCING POS ON UNICOM INDICATING INTENTIONS TO LAND AT OCEANO. IF AN ARPT IS CLOSED, IT SHOULD HAVE AN 'X' ON THE RWY.

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.