What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
On August 06, 2012, privacy data omitted, holder of a foreign certificate, acted as pilot in command (PIC) of a north American Saberliner SBR1, foreign registration number xa-spm. Aircraft xa-spm was enroute to providence, RI (kpvd). Boston ARTCC (2BW), sector 32 was controlling two aircraft in the vicinity of calverton VOR (ccc). Aircraft BAW115, a Boeing 747-400 was vectored out of the hold at ccc at 16,000 feet MSL. Aircraft xa-spm was cleared to descend and maintain 17,000 feet MSL. Aircraft xa-spm descended below 17,000 feet MSL causing a traffic alert to be issued from boston ARTCC.
As the FAA filed it
ON AUGUST 06, 2012, ^PRIVACY DATA OMITTED^, HOLDER OF A FOREIGN CERTIFICATE, ACTED AS PILOT IN COMMAND (PIC) OF A NORTH AMERICAN SABERLINER SBR1, FOREIGN REGISTRATION NUMBER XA-SPM. AIRCRAFT XA-SPM WAS ENROUTE TO PROVIDENCE, RI (KPVD). BOSTON ARTCC (2BW), SECTOR 32 WAS CONTROLLING TWO AIRCRAFT IN THE VICINITY OF CALVERTON VOR (CCC). AIRCRAFT BAW115, A BOEING 747-400 WAS VECTORED OUT OF THE HOLD AT CCC AT 16,000 FEET MSL. AIRCRAFT XA-SPM WAS CLEARED TO DESCEND AND MAINTAIN 17,000 FEET MSL. AIRCRAFT XA-SPM DESCENDED BELOW 17,000 FEET MSL CAUSING A TRAFFIC ALERT TO BE ISSUED FROM BOSTON ARTCC.