achimha wrote:
For me a failed magneto is a serious emergency requiring immediately landing.
Why would that be? I had a failed magneto once around 60 Miles from my home field in FL55 and we decided to fly back home, because we could stay in glide range of at least one airport all the time. Of course, in the C172 the O-300 is far from frying at almost any cruise power setting.
The large bore engines don’t really manage on one magneto. Apart from a very rough running engines, EGTs go through the roof, the exhaust stack melts and the turbocharger dies. Turbo engines are usually EGT limited (“TIT”) and on one magneto you are way above that limit.
Okay, in that setup you are certainly right. Aviation decision making is always influenced a lot by the surrounding parameters :-)
Did the distributor gear also have a loose “finger” ?
The large bore engines don’t really manage on one magneto. Apart from a very rough running engines, EGTs go through the roof, the exhaust stack melts and the turbocharger dies. Turbo engines are usually EGT limited (“TIT”) and on one magneto you are way above that limit.
That may be true for a turbo engine running at high power.
It’s not true operationally i.e. in the sense of continuing a normal flight and landing. My engine for example runs just fine on one mag.
Obviously one would not hang around up there for too long because you never know what else is about to fail…
