Centaurus's posts are always most enjoyable and a refreshing change. I note his rather interesting story about Air Nauru in the current (RAAF) Radschool Association Magazine on pg 16.
The Canberras sure didn't have an autopilot but they did have that wonderful (?) Doppler Navigation System known as Green Satin. I remember that was still being taught at Radschool at Laverton when I was there in the mid to late 1970's.