C150 pilot landed at an airport notamed closed.

Attributes
ACN	521048
Time
Date	200108
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : rqb.airport
State Reference	MI
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Cessna 150
Operating Under FAR Part	Part 91
Flight Phase	landing : roll climbout : initial
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : private pilot : instrument
Experience	flight time last 90 days : 50 flight time total : 125 flight time type : 118
ASRS Report	521048
Events
Anomaly	ground encounters other non adherence : published procedure non adherence : far other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	Airport Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Situations
Airport	markings : rqb.airport procedure or policy : rqb.airport signage : rqb.airport

Narrative:

During my preflight preparation, I evidently missed the NOTAM stating that rqb was closed. On letdown to airport, ASOS reported normal VFR conditions. There was no response on unicom frequency to traffic or advisory calls. Runway 27 was not marked as closed (no 'X' on runway). Crossing the threshold, I realized the runway numbers were missing. As I was already in the flare, I allowed the airplane to touch down for approximately 200 ft as the runway was clear. Upon return to the aircraft base, a rechk of the NOTAMS confirmed the suspicion the airport was closed when I landed. Check NOTAMS better. Turn off or modify ASOS message when airport is closed.

Original NASA ASRS Text

Title: C150 PLT LANDED AT AN ARPT NOTAMED CLOSED.

Narrative: DURING MY PREFLT PREPARATION, I EVIDENTLY MISSED THE NOTAM STATING THAT RQB WAS CLOSED. ON LETDOWN TO ARPT, ASOS RPTED NORMAL VFR CONDITIONS. THERE WAS NO RESPONSE ON UNICOM FREQ TO TFC OR ADVISORY CALLS. RWY 27 WAS NOT MARKED AS CLOSED (NO 'X' ON RWY). XING THE THRESHOLD, I REALIZED THE RWY NUMBERS WERE MISSING. AS I WAS ALREADY IN THE FLARE, I ALLOWED THE AIRPLANE TO TOUCH DOWN FOR APPROX 200 FT AS THE RWY WAS CLR. UPON RETURN TO THE ACFT BASE, A RECHK OF THE NOTAMS CONFIRMED THE SUSPICION THE ARPT WAS CLOSED WHEN I LANDED. CHK NOTAMS BETTER. TURN OFF OR MODIFY ASOS MESSAGE WHEN ARPT IS CLOSED.

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.