A falcon 20 pilot reported that he overshot his altitude on the teterboro 4 SID.

Attributes
ACN	451796
Time
Date	199910
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : teb.vor
State Reference	NJ
Altitude	msl bound lower : 1500 msl bound upper : 1800
Environment
Flight Conditions	VMC
Light	Dawn
Aircraft 1
Controlling Facilities	tracon : n90.tracon
Operator	general aviation : corporate
Make Model Name	Falcon 20FJF/20C/20D/20E/20F
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : teterord 4
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : captain
Qualification	pilot : atp
Person 2
Affiliation	company : corporate
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine
Events
Anomaly	altitude deviation : overshoot altitude deviation : excursion from assigned altitude non adherence : published procedure non adherence : clearance non adherence : far
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : returned to assigned altitude
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

After takeoff, teterboro 4 departure from runway 24 states runway heading to 1500 ft, right turn to 280 degrees, maintain 1500 ft until 4.5 DME from teb, then climb to 3000 ft. We reached 1800 ft prior to the 4.5 DME. We descended immediately. No conflict was apparent to us.

Original NASA ASRS Text

Title: A FALCON 20 PLT RPTED THAT HE OVERSHOT HIS ALT ON THE TETERBORO 4 SID.

Narrative: AFTER TKOF, TETERBORO 4 DEP FROM RWY 24 STATES RWY HEADING TO 1500 FT, R TURN TO 280 DEGS, MAINTAIN 1500 FT UNTIL 4.5 DME FROM TEB, THEN CLB TO 3000 FT. WE REACHED 1800 FT PRIOR TO THE 4.5 DME. WE DSNDED IMMEDIATELY. NO CONFLICT WAS APPARENT TO US.

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.