<< >> NASA ASRS Report 1317775, December 2015

Air carrier first officer reported descending below the SPIDR2 arrival published altitude depiction on the chart.

Attributes
ACN	1317775
Time
Date	201512
Local Time Of Day	1801-2400
Place
Locale Reference	RIC.Airport
State Reference	VA
Environment
Light	Night
Aircraft 1
Make Model Name	Medium Transport
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Route In Use	STAR SPIDR2
Flight Plan	IFR
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	ATC Issue All Types Deviation - Altitude Crossing Restriction Not Met Deviation - Altitude Overshoot Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy

Narrative:

On the SPIDR2 RNAV arrival; ATC gave us multiple step down altitudes; ignoring the altitudes prescribed in the arrival. Green flight path angle (fpa) mode was used to make the descent. Outside of hemme; we were told to descend via the arrival; so we scrolled the altitude down to 8;000. We then realized that we were at 10;600 just before hemme; with an altitude restriction of 11;000-12;000. We stopped descending and climbed back up to join the arrival profile.to prevent the airplane from leveling off during our assigned descent; we switched the vertical mode from magenta to green. When told to descend via the arrival later; we forgot to switch it back.

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Original NASA ASRS Text

Title: Air carrier First Officer reported descending below the SPIDR2 Arrival published altitude depiction on the chart.

Narrative: On the SPIDR2 RNAV arrival; ATC gave us multiple step down altitudes; ignoring the altitudes prescribed in the arrival. Green Flight Path Angle (FPA) mode was used to make the descent. Outside of HEMME; we were told to descend via the arrival; so we scrolled the altitude down to 8;000. We then realized that we were at 10;600 just before HEMME; with an altitude restriction of 11;000-12;000. We stopped descending and climbed back up to join the arrival profile.To prevent the airplane from leveling off during our assigned descent; we switched the vertical mode from magenta to green. When told to descend via the arrival later; we forgot to switch it back.

Data retrieved from NASA's ASRS site 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.