David Paule
Well Known Member
Every once in a while something in Wall Street Journal directly pertains to our airplanes. As you might know, Boeing is working through a new issue with the 737 MAX. This time it's a simple electrical issue. Here's the gist of it:
"The Federal Aviation Administration on Thursday said it is investigating why Boeing missed that a minor production change involving drilled holes wound up as the root of potential electrical problems.....
"...Previously, factory workers first drilled initial so-called pilot holes, primed and then drilled a second set of holes. The second set of holes stripped away the primer, allowing metal to touch metal and thus providing a protective “grounding path” for electrical current. By only drilling a single set of holes, the primer got in the way of that safeguard. The aim was to make the manufacturing process more efficient, some of the people said.
"...The 737 MAX’s electrical issue first surfaced in early February when a newly produced jet wouldn’t start for Boeing pilots after it rolled out of the factory, according to people familiar with the matter."
Dave
"The Federal Aviation Administration on Thursday said it is investigating why Boeing missed that a minor production change involving drilled holes wound up as the root of potential electrical problems.....
"...Previously, factory workers first drilled initial so-called pilot holes, primed and then drilled a second set of holes. The second set of holes stripped away the primer, allowing metal to touch metal and thus providing a protective “grounding path” for electrical current. By only drilling a single set of holes, the primer got in the way of that safeguard. The aim was to make the manufacturing process more efficient, some of the people said.
"...The 737 MAX’s electrical issue first surfaced in early February when a newly produced jet wouldn’t start for Boeing pilots after it rolled out of the factory, according to people familiar with the matter."
Dave