Planned dead reckoning segment allowed under IFR?

Did you have to put in lat/long's for the waypoints like we did in the Falcon 20's? 9 waypoints and one flight plan, the current one. We took it to Europe and back once in the late 80's. We had to tell ours where they were on startup.

My Dad flew 727's around the Pacific using twin dopplers and a loran. Later on, he started flying ones with INS's.

Yep, lat/long, 9 waypoints. High tech.
 
Just get an aircraft with celestial navigation window, a sextant and a Flight Navigator Certificate and you are set.

For the navigator certificate you need,
At least 200 hours of satisfactory flight navigation including celestial and radio navigation and dead reckoning, 500 hours of cross-country flight time, of which at least 100 hours were at night and be a graduate of a flight navigator course. Good luck finding one of those.
A retired airline pilot friend of mine actually did all that and got a Navigator rating on his pilot certificate a year ago.

FWIW, I think the Navy used to train pilots how to navigate off airway using rho-theta generated fixes using only a VOR/DME or TACAN receiver.
 
FWIW, I think the Navy used to train pilots how to navigate off airway using rho-theta generated fixes using only a VOR/DME or TACAN receiver.
They, and the Air Force, did point-to-point on their RMIs. Wasn't exactly useful for IFR flying, but much of their flying is not.
 
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