According to a correspondent in Greece, I hear the following (none of this have I confirmed myself):

• The first plane was a 747 from American Airlines (capacity 158). (This doesn’t sound quite right, 747s hold more than that. Perhaps this plane was a 737 or 767.)
• The second plane was a 767 from United Airlines. (The BBC is reporting that the UA plane is a 737B.)
• The plane that hit the Pentagon was a small passenger plane.