Originally Posted by
ATC Watcher
The RNAV-AR one is not for everybody , there are strict pre-conditions and it appears this Bengladesh DH8 ( or its crew) was not approved. It is still VOR-DME today for some.
Absolutely. The bar is set high. But, most modern large transports are equipped by the O.E.M for RNP AR. Then, it falls on the operator whether it wants to jump through all the hoops to gain RNP AR approval.
Ironically, later generation Q400s have an RNP AR option.
The Turkish A330 that went off the runway in fog was flying the RNP AR approach.