S76 Handbook ZFW Loading Considerations The 2025 S76 Handbook used in the CASA exam has a standard APS and Moment given on Page 48. When used, this starting point and normal loading makes having a CG that moves out of the FWD limit at any stage of flight pretty much impossible The main reason is that adding fuel moves the CG rearwards and loading the main baggage compartment C6 also moves the CG rearwards This means for standard loading questions, while you should still check ZFW CG along the way, the load calculation focuses on the helicopter at MTOW as this is when the CG will be most rearwards and at the position load adjusments will most likely need to be made However you can be presented with a situation where a different APS and Moment are given in a question and the rules about AFT CG at MTOW being the issue may not apply Whenever you have a load that starts with a non-standard APS and Moment different from the Page 48 data, it is essential you always do that additional check during your calculation of the CG position at ZFW If you find the ZFW CG position is outside the FWD limit then any addition of fuel or baggage into C6 MAY help drag the CG rearwards in limits, however the FWD limit line slopes rearwards as well, so in some cases adding fuel in particular can cause a CG that was IN the FWD limit at ZFW, to move OUT the FWD limit at MTOW. With this in mind you then do the entire loading problem at ZFW instead of at MTOW using exactly the same process of plotting the initial CG at ZFW, and if it is OUT the FWD limit, then just like all other examples here add/shift/remove the maximum allowable to bring the CG inside the front limit, plot that position, draw the line between both plots and just like you normally do find the CG where it is just inside the FWD limit and do the usual interpolation to find the answer If you have needed to adjust the load to bring the CG inside the FWD limit at ZFW and the Fuel On Board at Takeoff has also been given, then the next step is to load the fuel and check the FWD limit has not been exceeded with the fuel load. While the trend is for the CG to move rearwards as fuel is loaded, it is possible at the FWD limit that the additional gross weight results in a new CG FWD limit that may actually be exceeded with the fuel loaded. It seems weird, but that's just the way the line slopes, so check both ZFW and TOW CG positions when near the FWD limit. The workings for this RQG are for the unique situtation where the FWD CG limit at ZFW is the only problem considered, and because you should already have no problem doing a standard load sheet we start here with an non standard APS and Moment, so the focus of the problem is on the load shifting/adding/removing part to run along that very tricky FWD limit line Please Click Here to return to the login page.