Recent content by Alex3745

Yeah learnt it, and know the formula don’t often actually use it though. In Piper was always more focused on the arm since on the plotter you move the CG around with the arms and the graph was also a lbs/arm graph. Similar to the figure 6-8 graph by Cessna, but shaped differently so it works...

Not a student but new to the Cessna WB graphs. On Piper we just used the arm and made dots to connect lines to see where it fell. More like the figure 6-8 graph in the Cessna POH, not loaded airplane moment (which I guess wouldn’t be using arms lol) So your saying the arm for the aircraft needs...

So run a WB calculation using the POH worksheet but use the WB for your actual tail number. See where it falls on the graph, it’s going to end up nose heavy no matter what you do if you use the aft of reference datum figure on the amended WB sheet from the A/P Mines 1- 1700lbs empty , 41 moment...

There’s not much to understand you literally just follow step 1-10 on figure 6-3 (page 6-10) But you don’t use that with graph figure 6-8 It’s to be used with graph figure 6-7. It’s even stated in step 10 which graph to use. But the aircrafts empty weight moment arm is not in aft of CG...

It’s not really a magic number it’s in the POH on figure 6-1. It’s the area forward of the reference datum. When’s the last time you saw an updated W/B done by an A/P for a G1000 172s come in empty at 1642lbs 62.6” arm like the POH’s stock 172. I would guess never. The sample loading problem...

6-7 is the center of gravity moment envelope so the CG is there but it’s not displayed in terms of aft of Datum. It’s displayed in aft the nose aka the nose being the datum. They technically display they exact same thing if you covert between graphs but you need to take into account the 25.9”...

There are 2 different WB charts to use in the Cessna POH. One uses the aircrafts CG moment envelope, and the other uses CG location inches aft of datum. So depending which one is being used you might need to correct for FS0.0. Take the same loading problem on page 6-10 in the G1000 172s POH...

I know this thread is old but it has some incorrect information about calculating CG in a Cessna. I’ll try and describe it as best I can where this calculation went wrong. The problem you were having is you are using the incorrect CG graph. The one you want to be using is Figure 6-7 (center of...