There are several reasons for the delayed rollout of the Y class PTVs.
- Collapse of AN led to redistribution of resources. Whilst this did delay the rollout to a degree, its effect has been overstated because it is the best reason for PR spin purposes.
- Initial reliability. When first installed (OJE I think) QF had a deal of trouble getting the system operating satisfactorily and the rollout was slowed whilst this was corrected.
- Installation delays Initially all upgrades were done just at Avalon. This has proved too slow and upgrades are now carried out at Avalon, the QF jetbase in SYD and by NZ in AKL. This has now been further delayed by an industrial dispute in AKL meaning a 744 due to have commenced upgrade by NZ last week has remained in service until the industrial problems are resolved.