Originally Posted by
B2N2
Keep in mind that what the pilots did was completely against procedures published in the POH.
You can’t engineer ‘stupid’ out of a system.
I worked for a flightschool where we ended up having 4 of these.
MX kept a set of batteries on a trickle charger and we averaged about 1 jumpstart per month as inevitably Master Switches are left on during preflight or postflight inspections.
Never a problem if you follow the instructions
But what if the battery health is low due to excessive discharge? After charging there maybe just enough amp hours available to start the engines up etc but a short period of discharge could cause the voltage to sag.. starting engines use very very few amp hours so this scenario is possible. Just seems like a strange setup with the DA42 which could be avoided for not a lot of work and cost..