I'm reacquainting myself with the Longitude and having a great time with the updated capabilities (for the most part).  I've run into some issues with the VNAV and approach procedures, but for now, my main concern is static takeoff procedures.

I prefer a static takeoff with aircraft like this for most situations (unless the runway is quite long).  I'm getting a NO TAKEOFF warning (quite nasty actually) until I release the brakes.  After that, everything proceeds normally and the takeoff works well (with TO and AT operational).

Is this normal and I just have to endure the "shouting" until brake release?  Considering that static takeoffs are even recommended in the manual I found the warning a bit disconcerting.

Are you holding the aircraft with the toe brakes or the parking brake?

I'm not particularly familiar with the Longitude, but it's pretty common on most types for a static takeoff to be done with the toe brakes, while the takeoff warning only sounds if the parking brake is set.

Edited October 15, 20241 yr by martinboehme

Before takeoff, try activating the air brakes once (push lever forward an back to resting position).

Should avoid the warning.

2 hours ago, martinboehme said:

I'm not particularly familiar with the Longitude, but it's pretty common on most types for a static takeoff to be done with the toe brakes, while the takeoff warning only sounds if the parking brake is set.

That was it!  Makes sense - on the rare occasion I performed a static takeoff in my flying days, I wasn't putting the parking brake on in my 172... 🙂

43 minutes ago, ErnstB said:

Before takeoff, try activating the air brakes once (push lever forward an back to resting position)

Yep - I cleared that on the checklist before I began taxi.  That would have set off a caution if I hadn't.