Gulfstream III flight crew has an altitude excursion during the teb 5 departure.

Attributes
ACN	718907
Time
Date	200612
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : teb.airport
State Reference	NJ
Altitude	msl bound lower : 1500 msl bound upper : 2000
Environment
Flight Conditions	IMC
Weather Elements	Rain Turbulence Windshear
Light	Night
Aircraft 1
Controlling Facilities	tracon : n90.tracon
Operator	general aviation : personal
Make Model Name	Gulfstream II
Operating Under FAR Part	Part 91
Navigation In Use	other Other
Flight Phase	climbout : initial
Route In Use	departure sid : n/s
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp pilot : commercial pilot : instrument pilot : multi engine
Experience	flight time last 90 days : 100 flight time total : 7700 flight time type : 2000
ASRS Report	718907
Person 2
Affiliation	other
Function	flight crew : first officer
Events
Anomaly	altitude deviation : crossing restriction not met altitude deviation : overshoot conflict : ground less severe inflight encounter : turbulence non adherence : clearance non adherence : published procedure
Independent Detector	other controllera other flight crewa other flight crewb
Resolutory Action	flight crew : returned to assigned altitude
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Airspace Structure Flight Crew Human Performance Aircraft Environmental Factor
Primary Problem	Environmental Factor

Narrative:

Departed teb runway 24 just after frontal passage. Winds reported as 220/28 no gust. Climbing out of 400 ft experienced windshear and moderate turbulence. Conditions required maintaining maximum power to 1700 ft. We leveled off at 2000 ft as we were contacting new york departure. The SID required a level off at 1500 ft until reaching the teb 4.5 DME and then a climb to 2000 ft. We left 1500 ft approximately 2 miles prior to the 4.5 DME fix. Upon contact with new york departure we were asked as to why we did not follow the departure procedure. Our reply was windshear encountered and level off at 1500 ft was not yet safe.

Original NASA ASRS Text

Title: GULFSTREAM III FLT CREW HAS AN ALT EXCURSION DURING THE TEB 5 DEP.

Narrative: DEPARTED TEB RWY 24 JUST AFTER FRONTAL PASSAGE. WINDS REPORTED AS 220/28 NO GUST. CLBING OUT OF 400 FT EXPERIENCED WINDSHEAR AND MODERATE TURBULENCE. CONDITIONS REQUIRED MAINTAINING MAX POWER TO 1700 FT. WE LEVELED OFF AT 2000 FT AS WE WERE CONTACTING NEW YORK DEP. THE SID REQUIRED A LEVEL OFF AT 1500 FT UNTIL REACHING THE TEB 4.5 DME AND THEN A CLB TO 2000 FT. WE LEFT 1500 FT APPROX 2 MILES PRIOR TO THE 4.5 DME FIX. UPON CONTACT WITH NEW YORK DEP WE WERE ASKED AS TO WHY WE DID NOT FOLLOW THE DEPARTURE PROCEDURE. OUR REPLY WAS WINDSHEAR ENCOUNTERED AND LEVEL OFF AT 1500 FT WAS NOT YET SAFE.

Data retrieved from NASA's ASRS site as of January 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.