Originally Posted by
Pace
On some Cessna twins fuel pump on high could actually cause engine failures which was notable in a few crashes in the GoldenEagle.
There has been a Cessna service bulletin to fix this issue available for the last 20 years. Anybody who has not done the mod is IMO very foolish.
The tip tank twin Cessnas have a stupidly complex fuel system, The 340 I sometimes fly has 5 separate tanks with 3 fuel selectors 5 electrical boost pumps and 9 fuel drains. Plus there are all sorts of operational gotchas. A high level of system knowledge is an absolute must if you are flying these aircraft.