Sound nearly as bad as the F27 to F50..............looks similar outside but totally different inside.
Ansett never had CCQ for those 2 types although they were both F27's
( the F 50 was a F27-50 )
Only when the F50 was temporarily grounded in 1988 did some guys get refreshed back to the F27 for 2 months, they never flew both at once!!