Re: FAA orders Boeing 737 engine checks

Date:         19 Jul 98 22:07:17 
From: (Gerard Foley)
Organization: The Greater Columbus FreeNet
References:   1
Next article
View raw article
  or MIME structure

Lee Spencer ( wrote:

: CFM spokeswoman Pat Klaus said gearbox starter shafts from mid-1996
: until April this year had not been shotpeened, a manufacturing process
: that relieves stress and prevents metal fatigue.

Actually shotpeening imposes a stress which raises the endurance (fatigue)
strength of the metal.

No problem.