CL605 first officer reports leaving 1;500 ft for 2;000 ft prior to crossing wentz on the ruudy 4 whe...

Attributes
ACN	1071577
Time
Date	201303
Local Time Of Day	1201-1800
Place
Locale Reference	TEB.Airport
State Reference	NJ
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Challenger 605
Operating Under FAR Part	Part 91
Flight Phase	Climb
Route In Use	SID RUUDY
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy

Narrative:

After departing runway 24; we were assigned the ruudy departure. We climbed to 1;500 ft and leveled off. I engaged the autopilot. As they switched us over to departure; the magenta VNAV altitude above the ivsi changed from 1;500 to 2;000 ft. Believing we had crossed the wentz intersection; I dialed 2;000 ft in the altitude selector and selected vs; beginning a shallow climb for 2;000 ft. The pilot not flying stated 'we are not past wentz we need to stay at 1;500.' I rolled the vs wheel down to descend and disconnected the autopilot; descending back towards 1;500. We had climbed to 1;620 ft before descending. Operations continued as normal with no ATC interaction. Confirm VNAV altitudes above ivsi with way point passage in FMS.

Original NASA ASRS Text

Title: CL605 First Officer reports leaving 1;500 FT for 2;000 FT prior to crossing WENTZ on the RUUDY 4 when the magenta VNAV altitude above the IVSI changed from 1;500 to 2;000. The pilot-not-flying Captain pointed out that WENTZ had had not yet been crossed.

Narrative: After departing Runway 24; we were assigned the RUUDY departure. We climbed to 1;500 FT and leveled off. I engaged the autopilot. As they switched us over to Departure; the magenta VNAV altitude above the IVSI changed from 1;500 to 2;000 FT. Believing we had crossed the WENTZ Intersection; I dialed 2;000 FT in the altitude selector and selected VS; beginning a shallow climb for 2;000 FT. The pilot not flying stated 'we are not past WENTZ we need to stay at 1;500.' I rolled the VS wheel down to descend and disconnected the autopilot; descending back towards 1;500. We had climbed to 1;620 FT before descending. Operations continued as normal with no ATC interaction. Confirm VNAV altitudes above IVSI with way point passage in FMS.

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.

CL605 first officer reports leaving 1;500 ft for 2;000 ft prior to crossing wentz on the ruudy 4 when the magenta VNAV altitude above the ivsi changed from 1;500 to 2;000. The pilot-not-flying captain pointed out that wentz had had not yet been crossed.