Channel Express had 2 748s crash in one day at Portsmouth, and I believe also a Viscount in Switzerland. One of the 748s went through the fence and skidded onto the rush hour Eastern Road, a busy dual carriageway, without hurting anybody. I drove around it. It was 1967. Nobody was seriously hurt in any of the accidents. Portsmouth was a small grass airlfield with a tight east-west landing distance, and when the grass was wet, it was difficult even in a Cherokee. The airfield is a housing estate/Mercedes BMW Audi/Kia Chrysler trading base now!