When using double-twist method of safety wiring, .032 inch minimum diameter wire should be used on parts that have a hole diameter larger than .045 inch. Safety wire of .020 inch diameter (double strand) may be used on parts having a nominal hole diameter between .045 and .062 inch with a spacing between parts of less than 2 inches. When using the single-wire method, the largest size wire that the hole will accommodate should be used.
Quiz, what are some common aircraft items which use (frangible) copper or brass safety wire?
Entrants to quiz may not routinely sign any of the letters P, or A, or I after their names.
Bonus points for an official reference!
I've used safety wire for what seems like a ton of things away from aviation, mostly around the house. Useful stuff. Couple of rolls in the garage, last a long time.
oh snap I did not even see that, what an instructor I would be!I guess they could look at the post right above your post for a possible reference.
I am thinking at some point, someone somewhere has made a fire extinguisher or emergency valve 'fast' with ss wire, resulting in a calamity. Just human nature.
Our undying admiration!what did i win?
That's the real reason for the crash axe.I saw more than a few guarded switches in cockpits safety wired with steel rather than copper during my airline career. Normally when a young mechanic does one without knowing better. To my knowledge we never had one that was done wrong and needed to be used by the crew in an emergency.
To knock some sense into the young mechanic?That's the real reason for the crash axe.
To knock some sense into the young mechanic?
An Axe might be overkill.To knock some sense into the young mechanic?
An Axe might be overkill.
Also known as "witness wire". Salvo switches, canopy jettsion levers, emergency gear cranks and "War Emergency" gate on some mixture controls get it. There are others, but thats all I can think of right this minute.
only if the hull is de-pressurized........Ahhh...understand, most of what I work on, the direct vision opens with a bang if you are in a hurry to exit....