Narrative:

After rotation and on initial climb; the aircraft continued to pitch up; the elevator trim was moved to down trim and the cables became loose and tangled. I leveled off at 5;000 ft MSL which is approximately 500 ft AGL; with full forward elevator pressure and declared an emergency on 122.90 'unicom'. I announced to an aircraft holding short of runway I would be landing [on that] runway and that there were 3 souls on board. The landing was uneventful and I taxied back to the tie down spot and wrote a maintenance discrepancy in the rental log and spoke with the manager of the flight school that the aircraft need maintenance.

Google
 

Original NASA ASRS Text

Title: PA34 pilot reported the aircraft was difficult to control in pitch shortly after takeoff because the trim cables were loose and tangled.

Narrative: After rotation and on initial climb; the aircraft continued to pitch up; the elevator trim was moved to down trim and the cables became loose and tangled. I leveled off at 5;000 FT MSL which is approximately 500 FT AGL; with full forward elevator pressure and declared an emergency on 122.90 'Unicom'. I announced to an aircraft holding short of runway I would be landing [on that] runway and that there were 3 souls on board. The landing was uneventful and I taxied back to the tie down spot and wrote a maintenance discrepancy in the rental log and spoke with the manager of the flight school that the aircraft need maintenance.

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.