hey guys,thanks for that info.what i saw was in fact quite different to the plates i'm familiar with usually found around doors and seems etc that i know as being strenghtening plates.
this was actually just a small bare metal plate about 2-3inces long by 1.5inces high which appeared not to be riveted or anything,just attached to the skin with a date and number engraved on.in this instance the aircraft was an old ex-delta 727-200 n8873z that has been in storage for the desert for a while and had just arrived at my home base airport for breaking up.saw it as i was doing my pre-flight so thought i'd go have a look and noticed the patch. acft is obviously in flying order,having come all the way from the usa with the patch?
anybody familiar with this technique?
