Narrative:

Miscomputed passenger weight and aircraft takeoff weight. Was 100 pounds over maximum takeoff weight. Aircraft could not climb after normal rotation and liftoff. Maximum rate of climb 300 FPM; maximum altitude gained 300 ft. Notified tower we needed to return for landing due to unable to climb. Flew pattern at 300 ft MSL (250 ft AGL). Normal landing.

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Original NASA ASRS Text

Title: C172 UNABLE TO CLB ABOVE 300 FT AFTER TKOF FROM HWD. RPTR CITES PAX WT MISCALCULATED.

Narrative: MISCOMPUTED PAX WT AND ACFT TKOF WT. WAS 100 LBS OVER MAX TKOF WT. ACFT COULD NOT CLB AFTER NORMAL ROTATION AND LIFTOFF. MAX RATE OF CLB 300 FPM; MAX ALT GAINED 300 FT. NOTIFIED TWR WE NEEDED TO RETURN FOR LNDG DUE TO UNABLE TO CLB. FLEW PATTERN AT 300 FT MSL (250 FT AGL). NORMAL LNDG.

Data retrieved from NASA's ASRS site as of January 2009 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.