Just because you are talent limited doesn't mean the rest of us are.
polite and considerate, in your usual way. QDM would have been 270, btw. Everyone can calculate the heading, it is just that doing it in your head while flying IMC and doing an instrument scan would be tricky.
Neither the 7 DME arc, nor flying directly to 7 DME point 40° would have you complying with an ATC clearance "Direct 6NM center Fix".
I have over 8000 instrument approaches how ma[n]y do you have?
More than you think and more than enough to fly a 7 DME arc or an NDB procedure. Not enough to fly direct to a 6 DME center fix using the 1950s equipment of this hypothetical exercise. I'm of course handicapped by my limited in-flight mental arithmetic talents. Which is why I'm asking the question: I'm an avid student, eager to pick up nuggets of wisdom as they appear.
I agree of course that if you are above MSA within the MSA radius, a CFIT is excluded and a collision hazard is virtually non-existent as ATC would not agree with a direct 6 DME center fix if anyone else was likely to be in the neighbourhood of your flight path.
This whole discussion got out of hand when you said "nope, no rules". Which, after reading through the AIM and the online US CFR, might actually be true, because all this nonsense about panel mounted GPS systems only applies to US airspace (see below).
@ Peterh : I couldn't find the relevant references you were referring to on the US forums.
Interestingly enough: Part § 61.65 Instrument rating requirements tells us that we have to study the AIM as regards operations under IFR, but nowhere does it say that you have to abide by them after passing your IR check ride
However, the AIM publication itself says :
"This manual contains the fundamentals required in order to fly in the United States NAS. It also contains items of interest to pilots concerning health and medical facts, factors affecting flight safety, a pilot/controller glossary of terms used in the ATC System, and information on safety, accident, and hazard reporting"
but Part 91 doesn't mention mention either the word AIM or the word GPS
Then again there must be something in the statutes of the FAA that allows them to enforce 1-1-19, because the first paragraph of chapter 1 reads:
Various types of air navigation aids are in use
today, each serving a special purpose. These aids have
varied owners and operators, namely: the Federal
Aviation Administration (FAA), the military services, private organizations, individual states and
foreign governments. The FAA has the statutory
authority to establish, operate, maintain air navigation facilities and to prescribe standards for the
operation of any of these aids which are used for
instrument flight in federally controlled airspace.
We are not talking about Federally Controlled Airspace in the UK, so this is irrelevant for a Part 91 operation in the UK.