Narrative:

I was departing teb to the first waypoint; wentz; on the ruudy 3 [4] departure. At wentz I leveled out at the assigned altitude of 1;500 ft and activated the autopilot. However it did not turn on and I proceeded with the normal procedure of pressing the autopilot disconnect; and then attempted to activate the autopilot without success. I then repeated the above; again without success. I then proceeded to fly the aircraft manually but found I had drifted up to about 1;700 ft and proceeded to return to 1;500 ft. At this point I was about midway between wentz and the 2 mile distant tasca waypoint. When I reached tasca I climbed to 2;000 ft as required. About 5 minutes later I was able to activate the autopilot and proceeded without incident. Upon reflection; upon failure to activate the autopilot; I should have devoted my full attention to maintaining altitude and course instead of working on the autopilot.

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Original NASA ASRS Text

Title: C525 Captain approaching WENTZ at 1;500 FT (RUUDY 4 from TEB) attempts to engage the autopilot without success. During this time the altitude drifts up to 1;700 FT prior to WENTZ and is corrected back to 1;500 FT; but TASCA is crossed at 1;500 FT instead of the 2;000 FT published.

Narrative: I was departing TEB to the first waypoint; WENTZ; on the RUUDY 3 [4] departure. At WENTZ I leveled out at the assigned altitude of 1;500 FT and activated the autopilot. However it did not turn on and I proceeded with the normal procedure of pressing the autopilot disconnect; and then attempted to activate the autopilot without success. I then repeated the above; again without success. I then proceeded to fly the aircraft manually but found I had drifted up to about 1;700 FT and proceeded to return to 1;500 FT. At this point I was about midway between WENTZ and the 2 mile distant TASCA waypoint. When I reached TASCA I climbed to 2;000 FT as required. About 5 minutes later I was able to activate the autopilot and proceeded without incident. Upon reflection; upon failure to activate the autopilot; I should have devoted my full attention to maintaining altitude and course instead of working on the autopilot.

Data retrieved from NASA's ASRS site as of July 2013 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.