• 51-16838 US Army #1191. L-20 No: 191. Command A-2. Delivered 20-Oct-1952.
Note: 12-May-1954 "N116838" operated by Inter American Geodetic Service (IAGS), crashed after take-off from Medellin, Colombia, for Fort Clayton, Panama. Three occupants killed.
Unusual six digit serial probably relates to US Army L-20A 51-16838 c/n 387 and used for diplomatic reasons. Fort Clayton was HQ for the US Army South Command.