Narrative:

Missed required documents (registration/airworthiness certificate) on preflight. In pattern to land; pilot moved gear handle to extend gear. All indications normal. Upon touchdown; plane skidded on belly. I don't know what happened to cause [the] malfunction.

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Original NASA ASRS Text

Title: PA-28 pilot reported gear-up landing following normal indications prior to touchdown.

Narrative: Missed required documents (Registration/Airworthiness Certificate) on preflight. In pattern to land; pilot moved gear handle to extend gear. All indications normal. Upon touchdown; plane skidded on belly. I don't know what happened to cause [the] malfunction.

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.