At risk of sounding really ignorant... I have been trying to find out what the gadget on top of the glareshield in the TBM900 is and how to use it properly. I looked through all of the available manuals and other documents for the aircraft but cannot find anything on this implement. If someone has a link to what this is and how it works I would greatly appreciate it.
Note... I have subsequently learned that this device is an "angle of attack" indicator or "Alpha Indicator". How it works and how to "read" the various indications within it is still a mystery to me. If anyone has that information... Thanks.