A ce-500 on the teb 8 departure failed to capture 6;000 ft because of an autopilot malfunction and a...

Attributes
ACN	1027305
Time
Date	201207
Local Time Of Day	0601-1200
Place
Locale Reference	TEB.Airport
State Reference	NJ
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Citation I (C500)
Operating Under FAR Part	Part 91
Flight Phase	Climb
Route In Use	Vectors SID TEB8
Flight Plan	IFR
Component
Aircraft Component	Altitude Hold/Capture
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Instructor Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 120 Flight Crew Total 2500 Flight Crew Type 250
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Altitude Overshoot Deviation - Procedural Clearance

Narrative:

My crew of 2 departed teterboro runway 1 with the teterboro 8 departure. Departure control cleared my aircraft to 6;000 ft; heading 280. The next clearance was 'upon reaching 6;000; cleared direct brezy'. I increased the ascent rate on the autopilot control in order to reach 6;000 ft more quickly so that I could proceed on course toward my destination. The autopilot did not level the airplane at 6;000 ft. The airplane climbed to 6;300 ft MSL before I initiated a correction. In the process of correcting; the airplane climbed to 6;500 for an instant before quickly returning to 6;000 ft. As the aircraft returned to 6;000 ft; ATC asked what altitude we were climbing to and stated that they saw a mode C altitude read out of 6;500. At no time during this event was the safe outcome of the flight in question. No traffic was observed by the flight crew or reported by ATC in our vicinity during the altitude deviation. Contributing factors of the event include: flight crew failure to recognize the autopilot not capturing 6;000 ft; co-pilot not making altitude call outs per the company training manual; and the crew failing to comply with the company's sterile cockpit rule.

Original NASA ASRS Text

Title: A CE-500 on the TEB 8 Departure failed to capture 6;000 FT because of an autopilot malfunction and additionally the First Officer failed to call approaching the assigned altitude.

Narrative: My crew of 2 departed Teterboro Runway 1 with the Teterboro 8 departure. Departure Control cleared my aircraft to 6;000 FT; heading 280. The next clearance was 'upon reaching 6;000; cleared direct BREZY'. I increased the ascent rate on the autopilot control in order to reach 6;000 FT more quickly so that I could proceed on course toward my destination. The autopilot did not level the airplane at 6;000 FT. The airplane climbed to 6;300 FT MSL before I initiated a correction. In the process of correcting; the airplane climbed to 6;500 for an instant before quickly returning to 6;000 FT. As the aircraft returned to 6;000 FT; ATC asked what altitude we were climbing to and stated that they saw a Mode C altitude read out of 6;500. At no time during this event was the safe outcome of the flight in question. No traffic was observed by the flight crew or reported by ATC in our vicinity during the altitude deviation. Contributing factors of the event include: flight crew failure to recognize the autopilot not capturing 6;000 FT; co-pilot not making altitude call outs per the company training manual; and the crew failing to comply with the company's sterile cockpit rule.

Data retrieved from NASA's ASRS site as of July 2013 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 ce-500 on the teb 8 departure failed to capture 6;000 ft because of an autopilot malfunction and additionally the first officer failed to call approaching the assigned altitude.