Retired airline pilot and HP fan. Have restored and programmed many HP calculators through the years (1979 ->) including RPN, RPL, Prime, Forth, Fortran, Basic, Pascal, AlgolW (yuck).

Created Aviation based programs, code for various machines and presented at Conferences (HHC and HPPC) since 2009.

Currently, since I retired completing a PhD in paleoclimate sciences based on my MSc from 1984.