Narrative:

After setting normal takeoff power; we experienced less-than-expected acceleration; rotating near 3;000 ft. Remaining and lifting off with less than 2;000 ft. Remaining on a very long runway.[suspect] water intrusion during loading.crew believes water intrusion into the cargo or aircraft loading areas or electronics bays caused decreased performance or performance indications.

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Original NASA ASRS Text

Title: MD-11 Flight Crew reported aircraft slow to accelerate during takeoff.

Narrative: After setting normal takeoff power; we experienced less-than-expected acceleration; rotating near 3;000 ft. remaining and lifting off with less than 2;000 ft. remaining on a very long runway.[Suspect] Water intrusion during loading.Crew believes water intrusion into the cargo or aircraft loading areas or electronics bays caused decreased performance or performance indications.

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.