The SAI 340 Quattro is Four-In-One standby instrument that gives you precision Airspeed, Attitude, Altitude and Slip indications, all in an easy to read EFIS presentation. The Quattro can serve as a cost effective replacement for steam-gauge standby instruments in retrofit EFIS equipped aircraft, providing for a more consistent user interface during emergency operations. It can also be an excellent safety enhancing addition to your traditional six pack panel.
* The FAA has granted SANDIA Aerospace an additional TSO on their popular SAI 340 Quattro multi-function indicator. In addition to Attitude, Altitude, Airspeed and slip, the SAI 340 is now TSO’d for (I)VSI. (I)VSI is Instantaneous Vertical Speed. Unlike a standard VSI that has a 6-8 second lag, the SAI 340 gives virtually immediate vertical speed indications. The vertical speed is shown on the SAI 340 in both a tape and digital format. In addition to the (I)VSI, the new software version also adds an adjustable Altitude Bug.