The Herald of Everett, Washington
Customer service  |  Subscribe   |   Log in or sign up   |   Advertising information   |   Contact us
HeraldNet on Facebook HeraldNet on Twitter HeraldNet RSS feeds HeraldNet Pinterest HeraldNet Google Plus The Daily Herald on Linked In HeraldNet Youtube
HeraldNet Newsletters  Newsletters: Sign up  Green editions icon Green editions
Published: Thursday, November 14, 2013, 12:01 a.m.

Parts manuals don't say it all

  • Cory Graff

Parts manuals are good for figuring out what a component of an airplane does, but there is no chapter in the manual that lists what each hole is used for! We were perplexed by the 5/32nd holes seen on each side of the P-51 Mustang's .50-caliber machine guns. Just what did they do? It turns out that are used to boresight the fighter's guns. Each pair of holes helps correctly orient a boresight fixture, which spans the front of the gun and holds a steel rod inserted into the gun's barrel. This tool helps armorers shift the gun's aim up, down, left or right to make all of the fighter's bullets converge at a single point in space out in front of the aircraft.

Story tags » Military aviation

Subscribe to Weekend to-do list
See sample | Privacy policy

Most recent Flight Paths posts

Share your comments: Log in using your HeraldNet account or your Facebook, Twitter or Disqus profile. Comments that violate the rules are subject to removal. Please see our terms of use. Please note that you must verify your email address for your comments to appear.

You are logged in using your HeraldNet ID. Click here to update your profile. | Log out.

Our new comment system is not supported in IE 7. Please upgrade your browser here.

digital subscription promo

Subscribe now

Unlimited digital access starting at 99 cents, or included with any print subscription.

» More Aerospace
HeraldNet Classifieds

HeraldNet highlights

‘Grandma in the Window’
‘Grandma in the Window’: The kids on Bus 7 in Arlington welcome her home
Home from Hollywood
Home from Hollywood: Composer Ron Jones sets up shop in Stanwood
The meat of the issue
The meat of the issue: Viewpoints: Quantifying the risk that bacon will kill you
Start them early
Start them early: Hike it Baby connects parents and kids for outdoor fun