ZBW center controller and flight crew reported the aircraft descended below a published crossing res...

Attributes
ACN	1466551
Time
Date	201707
Local Time Of Day	1201-1800
Place
Locale Reference	ZBW.ARTCC
State Reference	NH
Aircraft 1
Make Model Name	Embraer Phenom 300
Operating Under FAR Part	Part 91
Flight Phase	Descent
Route In Use	STAR ZELKA
Flight Plan	IFR
Person 1
Function	Enroute
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 2.6
Person 2
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Glider Flight Crew Commercial Flight Crew Flight Instructor
Experience	Flight Crew Last 90 Days 130 Flight Crew Total 4400 Flight Crew Type 300
Events
Anomaly	Aircraft Equipment Problem Less Severe Airspace Violation All Types Deviation - Altitude Crossing Restriction Not Met Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy

Narrative:

Aircraft X checked on descending to and almost level at 24000 feet RNAV arrival. I told the pilot to descend via the arrival and the pilot read it back correctly. The aircraft leveled at 24000 feet. I then saw the aircraft descend below 24000 feet prior to the fix which has a published altitude of 24000 feet. I stopped their descent; but not before they violated the underlying sector's airspace. I told the pilot the published altitude at the fix and asked why they descended early. They said the computer did it. Once they were in my airspace I gave them a descent clearance.

Original NASA ASRS Text

Title: ZBW Center Controller and flight crew reported the aircraft descended below a published crossing restriction.

Narrative: Aircraft X checked on descending to and almost level at 24000 feet RNAV arrival. I told the pilot to descend via the arrival and the pilot read it back correctly. The aircraft leveled at 24000 feet. I then saw the aircraft descend below 24000 feet prior to the fix which has a published altitude of 24000 feet. I stopped their descent; but not before they violated the underlying sector's airspace. I told the pilot the published altitude at the fix and asked why they descended early. They said the computer did it. Once they were in my airspace I gave them a descent clearance.

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.

ZBW center controller and flight crew reported the aircraft descended below a published crossing restriction.