Okay, I "mis-remembered".
Here is Lindsay Wilson's 2010 summary:
<First: cosi's Dad, three digits starting with 1XX, date??
Second: Lindsay's uncle, 0053xx, date ??
Third: Ikara, 0008xx_, January 1983
Fourth: ozbeachbabe, 0008xx_, September 1986
Fifth: Lindsay, 0056xx_, February 1989>
But, again, can that be right?
Ikara: Your number is 8xx_, with a joining date of 1983?
Yet Ozbeachbabe is 8xx_ from 1996, mine is 9xx_ from 1986 and my partner is 4xx_ from 1986.
Any additional data points for that period to help us here?
Curiouser and curiouser, with apologies to Alice's (non-flying) adventures.