While I did like John and used the bottom of the firewall as the datum using the same logic in that the firewall will never move as long as this was a flying aircraft. However, it has become more common now days to project a point some fixed distance forward from a fixed point on the aircraft. For example, the datum might be 6' forward of the bottom of the front of the firewall.
So why add that complexity to the W&B calculation? In time, people tend to forget that what goes in front of the datum is a negative number and what goes behind the datum is a positive number. Even though it is a simple math calculation, positive vs negative errors seem to happen with great regularity. By using a point projected out in front of the aircraft, it keeps all the math positive. Or more importantly, when removing equipment, it keeps you from needing to subtract a negative number and eliminates the most common mistake made when recalculating or updating the W&B on an aircraft. It's just food for thought. -Jeff Scott Arkansas Ozarks See my latest projects at <http://jeffsplanes.com> > Sent: Monday, September 21, 2020 at 5:38 PM > From: "John Bouyea via KRnet" <krnet@list.krnet.org> > To: "'KRnet'" <krnet@list.krnet.org> > Cc: "John Bouyea" <j...@bouyea.net> > Subject: KR> KR2 Manual Excerpt > > In an effort to improve aviation safety and reduce the chance of calculation > errors, attached is an excerpt of the KR2 Wt & Bal procedures. > > If you don't have the entire manual, this isn't going to help much. > > > > John Bouyea > > N133RM KR-2S - imported, fixed & flying > > <http://www.bouyea.net/cur_proj/N133RM> www.bouyea.net/cur_proj/N133RM > > OR81/ Hillsboro, OR > > > > _______________________________________________ > Search the KRnet Archives at > https://www.mail-archive.com/krnet@list.krnet.org/. > Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options. > To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org > _______________________________________________ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org
