DV
I understand what you are saying,I was just saying that it is a shared responsibility,safety check wise the last person who enters the cockpit has the responsibility to check the pin and in this case that would not have been the tradesman !
I have seen quite a few people on here who have never missed checks/made mistakes...to err is to be human - yes it is a basic check but with a Hawk front seat one has to be aware that viewed from above it is a subtle defect,one has to move ones head down and fwd to see the handle/pin relationship clearly,which I am sure we all do now.
rgds LR