Hello,
Since i do not know where to post my findings, i will elect to adress it here. After all, this is the the dedicated RB guide topic which is surely the best place to discuss new hypothesis about filming locations!
Of course, the forum is a huge place, so some of my hypothesis should have been already discussed and disclosed for long elsewhere? in that case, let me know.
At first, i will evoke the (very short)airstrip you could see at the beginning end at the end of
"The Black Orchid" (1.16).
I spent somme hours to see where it would better fit. Surely an old and abandoned airfield somewhere in Oahu. I was amazed to notice how many old USAF, Marines or US Navy old aistripes and airfields could be accounted at Oahu !
And i was leading on that good source:
http://www.airfields-freeman.com/HI/Air ... Oahu_N.htm
Scroll the page to the end and you will see pictures of
Haleiwa old bitumen-coated airstrip. Il match pretty close the episode (his orientation; length, the proximity of the beachside and access tracks for cars... From Google Earth, You can spot the old emplacement of the wooden ACT for the approach SSW. You could barely see it from the episode prologue.
The fact that the filming team uses numerous spots in the vicinity tends to strengthened that hypothesis.
BTW, Haleiwa is an historical place. It is one of the few airstripes from where an handfull of US fighters did take off to retaliate against Kido Butai airplanes during the infamous Pearl Harbor attack.
Edit: this link to the GE satellite view pointing to this alleged position
https://ibb.co/fCsckrv