If you reside in a historic district, to conduct work to the exterior of your historic property, you are required to obtain a Certificate of Appropriateness (COA). A COA is a special permit obtained in addition to the regular building permitting process.
The recommended arrival time at the airport is 75 minutes prior to departure when traveling within the United States. You must be checked in at least 30 minutes before your scheduled departure time.
How far ahead of time do I need to be at Heathrow for a British Airways flight to the U.S.? I was figuring two hours, but someone on the London board says three hours. (This is for a flight leaving Heathrow at 13:25 on Christmas day. I have a mini-cab booked to pick me up at my hotel in Bayswater at 9:30.