I was just having a look through some old acft accident reports, as you do every so often (oh go on, admit it - you know you do!) and came across this one, which I actually remember happening.

Basically, the much loved and much missed Australian airline, Ansett, began services to Japan (and later Taiwan and HKG) in 1994, using two leased ex-SQ 743s. It was given the rights by the Australian authorities with relatively little notice and with KIX due to open (ops to Osaka being intended to coincide with that), AN had only five months to prepare for 747 operations.

In October 1994, one of the newly acquired 747s suffered an oil leak shortly after takeoff from KIX and returned; although the captain was very experienced (ex-CX), the FO and FE were new to the 747; the FO had flown 727s and the FE had served on the 767 fleet, as an FE. Now, AN was the only airline to have FEs on their 767s and as the report points out, the 767 didn't really need an FE and as a result of this, 767 FEs were not really as "integrated" into the flight deck operation as those on other aircraft; as a result of this, the FE's conversion to an aircraft which actually needed an FE was difficult and he failed some checks.

The reports points to poor CRM, but what is most interesting is the confusion in AN's preparedness for 747 operations. It really is a fascinating read:

http://www.atsb.gov.au/publications/...994/aair/pdf/aair199403038_001.pdf