Magnaflux

["Dunst, Mordecai" <mdunst@smtplink.coh.org>]

     Q)  Conventional wisdom dictates that a magnafluxed piece of 
     ferrous metal is OK to use.  Suppose that piece of metal has been
     used for MANY hours...under hard loads.  i.e. a buddy of mine has
     an older airplane.  About 8,000 hrs on the engine.  He has the 
     standard annual and has the crank magnafluxed-"OK".  He says the
     FAA says its ok to re-use.  Is it?  
     
     When does a piece of metal become unsafe to re-use even if it meets 
     specs?.  How can you tell in a cost effective way.? 
     
     It seems that magnafluxing is an operator dependant task i.e. someone
     can spend a little time or a lot of time on the procedure.....
     
     Mordy