Just to add another requirement for automatic spoiler deployment and the deployment of the ground spoilers (4 & 9) - the truck tilt actuators need to be pressurised, as well as both trucks un-tilted and thrust levers at idle. The nose wheel does not need to be on the ground for either automatic spoiler deployment or use of reversers. If you use manual speed brake on landing you may get extra nose up pitch compared to when automatic deployment is used. This is because when deployed automatically there is a time delay of 1.25 seconds before panels 2,3,10, & 11 are raised in order to avoid this nose up pitch.