Photo © Carlos Aleman - SJU Aviation Photography
Apparently, this is a 767-400ER in SJU. Normally only 737-800s (from CVG) 757s (from ATL and JFK) and domestic 767-300s (from ATL) land there. Could it have been an equipment substitution for a 767-300 on the ATL-SJU route? If so, how often do these substitutions occur?