Narrative:

We landed at pwk around XA30 am. The altimeter setting was 29.42. We took off at XA42 and the new altimeter setting was 29.94. We did not reset our altimeters (29.42 showing) and leveled off at 5000 ft as instructed by departure control. But, we indeed leveled off at 5520 ft MSL. Even though it is the crew's responsibility to set the correct altimeter pressure, and nobody else should be blamed for this mistake, ATC could help prevent such an occurrence. I would suggest that ground control gives an initial taxi clearance terminated by an altimeter setting, especially when the taf reports a rapidly rising slp.

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Original NASA ASRS Text

Title: C650 TOOK OFF WITH INCORRECT ALTIMETER SETTING, OVERSHOT ALT BY 520 FT.

Narrative: WE LANDED AT PWK AROUND XA30 AM. THE ALTIMETER SETTING WAS 29.42. WE TOOK OFF AT XA42 AND THE NEW ALTIMETER SETTING WAS 29.94. WE DID NOT RESET OUR ALTIMETERS (29.42 SHOWING) AND LEVELED OFF AT 5000 FT AS INSTRUCTED BY DEP CTL. BUT, WE INDEED LEVELED OFF AT 5520 FT MSL. EVEN THOUGH IT IS THE CREW'S RESPONSIBILITY TO SET THE CORRECT ALTIMETER PRESSURE, AND NOBODY ELSE SHOULD BE BLAMED FOR THIS MISTAKE, ATC COULD HELP PREVENT SUCH AN OCCURRENCE. I WOULD SUGGEST THAT GND CTL GIVES AN INITIAL TAXI CLRNC TERMINATED BY AN ALTIMETER SETTING, ESPECIALLY WHEN THE TAF RPTS A RAPIDLY RISING SLP.

Data retrieved from NASA's ASRS site as of July 2007 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.