Originally Posted by
Paulm1949
I was talking about one of those rnav arrivals below MSA and non radar environment. Say for instance you face a big thunderstorm whilst below MSA but between waypoints that then turned red on the wx radar that wasn’t previously an issue. Can you see the dilemma ? Caught between the 2 waypoints below MSA.
You do exactly what you would do in IMC on any instrument approach below MSA: You're committed to the approach track so
(a) you push through it and continue
(b) you push through it and go around, climb to MSA then turn, or
(c) you turn below MSA if you're damn sure about terrain.