Remember that the D40 doesn't have manual white balance.
My setting: On a sunny day, use aperture-priority mode. Set to ISO 200, aperture to f/8, and let the camera pick the shutter speed. Make sure it's around 1/500 or higher.
As for the other stuff, the info in the shooting info display:
Remember, to change the settings press the zoom in button (+) and use the arrow pad.
QUAL: I personally like to shoot RAW, pick whatever you use.
White balance: Set to whatever the lighting is, usually daylight (the sun logo)
Shooting mode: Continuous [ ]]]
Focus mode: AF
area mode; Dynamic area [+[ ]+]
Metering: I use matrix personally(the top one)
Flash compensation: I normally don't use flash for aviation
Exposure comp: if the camera over or underexposes, use this. I usually set to -0.3 as my default.
Flash mode: I don't use flash for aviation
- Set this to A or M/A normally, manual focus(M) is usually a last resort for aviation
(if your lens has this)-On. However if it's on a tripod turn it off.