Getting home
The “re-planning” was in fact called a “re-dispatch”. You plan to a field and when you are near (or abeam) you “divert” to the real destination. It’s quite legit and works like a charm, so long as the weather at you “real” destination is OK.
Before anyone butts in, it’s also quite safe, but usually depends on not having burnt your contingency fuel and getting good levels.
On a related topic, is it not the FAA intention to introduce ETOPS for 3- and 4-engined aircraft ? I presume that in a case like this, the aircraft would need to land back at MRU ? Can anyone enlighten me please ?
oTd