A premier captain reported arming the autopilot at 400 ft on the teb RUUDY2 departure but it failed ...

Attributes
ACN	952535
Time
Date	201106
Local Time Of Day	0601-1200
Place
Locale Reference	TEB.Airport
State Reference	NJ
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Make Model Name	Premier 1
Operating Under FAR Part	Part 91
Flight Phase	Initial Climb
Route In Use	Vectors SID RUUDY 2
Flight Plan	IFR
Component
Aircraft Component	Autoflight System
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Instructor
Experience	Flight Crew Last 90 Days 73 Flight Crew Total 12806 Flight Crew Type 2530
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Altitude Overshoot Deviation - Procedural Published Material / Policy

Narrative:

Taking off from teb I armed the autopilot at 400 ft. It appears the auto did not engage and when I saw that we would be going through 1;500 ft I pulled the power back and leveled the plane as soon as possible. We were 150 ft high so I returned to 1;500 ft. As I was at 1;500 ft the controller said to climb to 8;000 ft. Rest of the flight was normal. We did an operational check of the autopilot at our next stop. This is the second autopilot switch installed on the aircraft. It checked ok. We did change our procedure to have the pilot not flying arm the auto pilot when the pilot flying calls for it and both pilots call out 'autopilot on.'

Original NASA ASRS Text

Title: A Premier Captain reported arming the autopilot at 400 FT on the TEB RUUDY2 Departure but it failed to engage and overshot the 1;500 FT constraint slightly.

Narrative: Taking off from TEB I armed the autopilot at 400 FT. It appears the auto did not engage and when I saw that we would be going through 1;500 FT I pulled the power back and leveled the plane ASAP. We were 150 FT high so I returned to 1;500 FT. As I was at 1;500 FT the Controller said to climb to 8;000 FT. Rest of the flight was normal. We did an operational check of the autopilot at our next stop. This is the second autopilot switch installed on the aircraft. It checked OK. We did change our procedure to have the pilot not flying arm the auto pilot when the pilot flying calls for it and both pilots call out 'autopilot on.'

Data retrieved from NASA's ASRS site as of April 2012 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.

A premier captain reported arming the autopilot at 400 ft on the teb RUUDY2 departure but it failed to engage and overshot the 1;500 ft constraint slightly.