ezfrag

@bpcw0001 & @VirtualGAaviator thanks for the insight. I have downloaded that tool and had a look and also have mapped the pitch trim to the hat switch on top of my joystick instead of on my throttle quadrant where it is slightly more difficult to adjust on the fly. I will then try multiple take-offs to see if I can find a workflow whereby I can rotate enough to get a positive rate and then trim down a certain number of clicks until I get a less aggressive nose-up intention from the aircraft. Appreciate the help.

Hi all. I’m hoping to get some help as I’m struggling with the “feel” of the challenger in the air. Firstly, is there a way to calculate the correct pitch trim based upon weight and balance? I can’t find a page in the FMC that will tell me what to set as stab trim before takeoff. I’ve seen and read people saying to shove it at 5 for takeoff so I tried this and it was way too light-nosed and started oscillating as I fought the nose wanting to rise during takeoff. I reset to the runway and dropped the stab trim to 3.6 and it was way better and felt much more stable during the climb out. So how do I determine this? During landing I experienced the exact same thing with the nose feeling too light. Is it standard procedure to disconnect the AP and then reset the stab trim? I felt like I had to fight the aircraft onto the runway. Is there a pitch sync button or something that I’m missing? I found an AP pitch sync button on the yoke but it can’t be this because AP is disconnected during landing. Can someone talk me through how they work with trim in the aircraft? My experience is with Airbus A320 and A350 where the aircraft feels really stable when AP is disconnected. Also with the Airbus I’m used to making small inputs with the side stick with the aircraft holding attitude in between so you don’t have to hold the bank input or pitch input because the aircraft holds on its own. Clearly the Challenger doesn’t do this and naturally I know I need to fly it differently but it feels like the stability is all over the place as soon as I disconnect the AP. Appreciate any help as I try to learn to fly this aircraft. Cheers!