411A,
on the early models of the HS.125...also a fine aircraft/engine combo
You speak in jest, of course!
Only aeroplane I have flown that weathercocks out of wind.
Remember the CAGS??
We discovered some really weird characteristics of that Viper, including a ability to surge and only recover to a low power "false idle", with no response to thrust lever movement. One ( not VH-, but ex-VH-) went into the drink near Nice with that problem.
The undercarriage downlock system could only have been designed by Heath Robinson!! Hence the big block of faired hardwood down the guts, and the extended flap hinges with little wear pads, and DCA AU got to prove it worked, Avalon 1965 or '66, from memory.
But the rear main bearing lubrication was total loss, and we did learn to keep very careful track of the minimum oil consumption.
Tootle pip!!