Yet it is exactly this which does not reasonate.
a rational prohibition of using an ATM reduced thrust in substantially adverse conditions
......
It is not rational to preclude a use of DRT which is otherwise a legal rating
From a risk-exposure viewpoint we don't want the pilots avoiding the full boost by an operational choice (a) and then ...
... then there really should not be any (b) if (a) is being respected.
Hey, cap, we need to go full forward on this slippery piece, no flex allowed.
Oh my dear padwan. We'll call it a DRT and reduce as usual. Here, let me activate the CDU prompt for you <click>.
Okay, here's a thought.
The exposure
is less with DRT because it costs more money to purchase and is not an installed option available to completely everyone yet (AST pretty much is). Thus a large percentage of people wishing to make a reduced-take off on CONTA still won't be able to roll that dice. The concept of not pushing all the luck all the times by everyone is retained in good standing.