Page 23 - Volume 15 Number 10

“Dynamic balancing ... is the entire prop-and-engine combination that is being balanced.”
industry standard has been 0.2 ips for as long as I can remember. The trick is to distribute the weights to reduce the vibrations. Whenever possible, I strived for 0.1 ips. Done properly, it can be very effective.
Sometimes I would get a prop that was just overhauled and statically balanced at the prop shop that was horribly out of balance when installed. Experience taught me to strip off all the weights used in static balancing and start from scratch. This proved more efficient in the long run.
Dynamic prop balancing is not part of any recurring inspection. It is not needed on a regular basis. But
whenever a prop came off for any reason, it was my practice to perform dynamic balancing when it went back on.
There is no downside to dynamic prop balancing. It is well worth the money. As they say, an ounce of prevention is worth a pound of cure. KA
*Based on an article of the same name from the May/Jun 2010 issue.
Dean Benedict is a certified A&P, AI with over 45 years of maintaining King Airs. He’s the founder and former owner of HonestAir Inc., a maintenance shop that specialized in Beech aircraft with an emphasis on King Airs. Currently, with BeechMedic LLC, Dean consults with King Air owners, operators and maintenance shops on all things pertaining to King Air maintenance. This includes troubleshooting, pre-buys
and maintenance management. He can be reached at dr.dean@ beechmedic.com or (702) 524-4378.
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OCTOBER 2021
KING AIR MAGAZINE • 21