
Emergency Battery System
Rich Doyle, September 2023 In all all the IFR-rated Diamonds there is a limited-duration Emergency Battery System which, when activated, provides battery power to the

Rich Doyle, September 2023 In all all the IFR-rated Diamonds there is a limited-duration Emergency Battery System which, when activated, provides battery power to the

Rich Doyle, August 2023 Using Bose A30 LEMO 6-pin panel power headsets without batteries installed in a Diamond (of any model) can result in the

The health of the DA40 main battery is not just critical to be able to start its engine as a precursor to committing flight, but a critical line of defense against alternator failure in flight. Departing with the battery in questionable condition, including just being somewhat undercharged, is a true risk factor, particularly at night or IFR.

The DA40 has a jack point on each wing root. These are designed to work with standard jacks such as Meyers A5. There are a couple of things you need to know about these

For a number of years Lycoming shipped the M-series engines (including the above engine found in most Lycoming DA40s) with the wrong dipstick.

When the DA40 flaps are retracted for cruise or otherwise, they are under a preload that helps stability of the flaps when there is fluctuating aerodynamic load in flight. This article goes a little further than the manual into the details.

A couple of things to check about your propeller RPM, independent of which propeller you have.

The DA40 Maintenance Manual Lubrication Schedule for the nose wheel has only a
requirement to periodically re-grease the wheel bearing (as with the main gear wheel bearings) and the “eye end” (upper connection point) of the elastomer pack.