Narrative:

Was cleared teb 5 departure. Reached 500 ft and began turn to pnj; even though procedure required climb to 1500 ft MSL before turning. Tower alerted me to fly the departure as published. I fly frequently in the pittsburgh area where airports are 1100-1200 ft MSL. I was used to already being 1000 ft up on takeoff; and misread the altimeter; thinking I was 1500 ft when I was only 500 ft. My student was in the right seat for this IFR leg and he pointed out the tower and that we were to climb to 1500 ft before turning; as I had briefed outloud before departure. Contributing to this error was a 'takeoff with no delay' -- I usually would run through the departure sequence one more time before rolling; but we were at a busy airport and had to take the available takeoff slot. I had flown this departure correctly 2 days earlier; but for whatever reason misinterpreted the altimeter. I am glad conditions were IMC as there is a tower not far from the departure end of runway 01.

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Original NASA ASRS Text

Title: C205 STUDENT AND INSTRUCTOR PLT ON TEB SID FROM TEB START TURN AT 500 FT AGL VICE 1500 FT AS PUBLISHED.

Narrative: WAS CLEARED TEB 5 DEP. REACHED 500 FT AND BEGAN TURN TO PNJ; EVEN THOUGH PROC REQUIRED CLB TO 1500 FT MSL BEFORE TURNING. TOWER ALERTED ME TO FLY THE DEP AS PUBLISHED. I FLY FREQUENTLY IN THE PITTSBURGH AREA WHERE ARPTS ARE 1100-1200 FT MSL. I WAS USED TO ALREADY BEING 1000 FT UP ON TAKEOFF; AND MISREAD THE ALTIMETER; THINKING I WAS 1500 FT WHEN I WAS ONLY 500 FT. MY STUDENT WAS IN THE R SEAT FOR THIS IFR LEG AND HE POINTED OUT THE TOWER AND THAT WE WERE TO CLB TO 1500 FT BEFORE TURNING; AS I HAD BRIEFED OUTLOUD BEFORE DEP. CONTRIBUTING TO THIS ERROR WAS A 'TAKEOFF WITH NO DELAY' -- I USUALLY WOULD RUN THROUGH THE DEP SEQUENCE ONE MORE TIME BEFORE ROLLING; BUT WE WERE AT A BUSY ARPT AND HAD TO TAKE THE AVAILABLE TAKEOFF SLOT. I HAD FLOWN THIS DEP CORRECTLY 2 DAYS EARLIER; BUT FOR WHATEVER REASON MISINTERPRETED THE ALTIMETER. I AM GLAD CONDITIONS WERE IMC AS THERE IS A TOWER NOT FAR FROM THE DEP END OF RWY 01.

Data retrieved from NASA's ASRS site as of May 2009 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.