Narrative:

When departing on the teb 8 departure out of teb; the non flying pilot (trip captain) selected navigation/VNAV/vvs on the flight guidance panel (as per my brief). I initially brought the power back at around 500 ft AGL; then engaged the autopilot at approximately 1;000 ft MSL (the non flying pilot was contacting departure; so I engaged the autopilot myself as the flying pilot). Soon after; it clearly appeared to me that the autopilot was not going to capture the altitude; there was short discussion from the non flying pilot that it would capture; it was in valt; as he saw that I was about to disengage the autopilot to take action to correct. I had already switched from VNAV to vs (do decrease the rate of climb manually) on the flight guidance panel; however; in that moment; the VNAV had already gone to valt; therefore; it did not take. Then; at approximately 200 ft prior to the required 2;000 ft level off altitude; he said 'ok; it's not going to' (level off). We both had our hand on the yoke; I disengaged the autopilot and we nosed over; but overshot our altitude by approximately 350 ft. What I believe caused the problem was not bringing additional power back soon enough in addition attempting to change the flight guidance panel from VNAV/vvs to vs at a very critical time (right when it changed to valt; unknowingly). Taking action sooner; when I originally began too; would have prevented the overshoot. Note: weather above is approximate; the rain had cleared out and visibility increased prior to our departure.

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Original NASA ASRS Text

Title: A CL30 which departed on the TEB 8 Runway 1 SID did not capture the 2;000 FT set in the MCP and so overshot by about 350 FT at which time ATC issued a higher altitude.

Narrative: When departing on the TEB 8 Departure out of TEB; the non flying pilot (trip Captain) selected NAV/VNAV/VVS on the flight guidance panel (as per my brief). I initially brought the power back at around 500 FT AGL; then engaged the autopilot at approximately 1;000 FT MSL (the non flying pilot was contacting Departure; so I engaged the autopilot myself as the flying pilot). Soon after; it clearly appeared to me that the autopilot was not going to capture the altitude; there was short discussion from the non flying pilot that it would capture; it was in VALT; as he saw that I was about to disengage the autopilot to take action to correct. I had already switched from VNAV to VS (do decrease the rate of climb manually) on the flight guidance panel; however; in that moment; the VNAV had already gone to VALT; therefore; it did not take. Then; at approximately 200 FT prior to the required 2;000 FT level off altitude; he said 'OK; it's not going to' (level off). We both had our hand on the yoke; I disengaged the autopilot and we nosed over; but overshot our altitude by approximately 350 FT. What I believe caused the problem was not bringing additional power back soon enough in addition attempting to change the flight guidance panel from VNAV/VVS to VS at a very critical time (right when it changed to VALT; unknowingly). Taking action sooner; when I originally began too; would have prevented the overshoot. Note: Weather above is approximate; the rain had cleared out and visibility increased prior to our departure.

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.