If no one is leaving EK, ans they ave 'heaps' of applications, how come every time I come onto PPRuNe, there is a banner ad inviting me to apply?
New aircraft
Applicants not suitable
Attrition, long term sick.
Retirement
New route structure, differing crew requirements
Attrition is good for airlines, cheaper (new Commander, New FO), morale (New Captain, New FO)