Narrative:

Took off into icing conditions and turbulence from runway 1 at teb. I made the initial turn manually to 040; called flaps up; and then called for the 'autopilot on.' the teterboro 8 SID was programed and LNAV engaged. As we approached 1;800 ft MSL ATC cleared us to 10;000 ft. My copilot dialed in the altitude and bumped the autopilot off in the turbulence. I grabbed the yoke and he reengaged the autopilot and selected heading. I called for flight level change and LNAV. This all occurred in a very small amount of time. Even though we acted quickly; we had passed the 2.3 NM turn on the SID. I selected heading and started the turn. 15 degrees into the turn ATC issued a heading of 270. We missed the turn by 2 NM. There were no conflicts or further action required or requested.

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Original NASA ASRS Text

Title: G-V Captain reports a late turn on the TEB 8 departure from Runway 1 when the First Officer inadvertently bumps the autopilot off while setting a new MCP altitude; due to turbulence.

Narrative: Took off into icing conditions and turbulence from Runway 1 at TEB. I made the initial turn manually to 040; called flaps up; and then called for the 'autopilot on.' The Teterboro 8 SID was programed and LNAV engaged. As we approached 1;800 FT MSL ATC cleared us to 10;000 FT. My copilot dialed in the altitude and bumped the autopilot off in the turbulence. I grabbed the yoke and he reengaged the autopilot and selected heading. I called for flight level change and LNAV. This all occurred in a very small amount of time. Even though we acted quickly; we had passed the 2.3 NM turn on the SID. I selected heading and started the turn. 15 degrees into the turn ATC issued a heading of 270. We missed the turn by 2 NM. There were no conflicts or further action required or requested.

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.