Latest on this is that the Whirlwind was at the January 1944 Fighter Conference at Elgin – a definite location, based on PT’s logs and a book I found about a Lockheed test pilot who got to fly it. So the timeline goes Anacostia NAS July 42, then Norfolk NAS January 43 (approx., based on Twiss saying it had been in open storage for a year) to January 44, then down to Eglin AFB for the conference.. then disappears, except for a request to Westland for a tailwheel and some expertise in 1944, from the USAAC / USAAF. I have found nothing yet to suggest Pensacola, as has been put forward before.. but I haven’t seen all the evidence Jerry Brewer and NiallC have.

Can anyone add to this?