--- pj_datums.c~        2005-11-04 15:28:31.000000000 +0000
+++ pj_datums.c 2005-11-04 15:53:30.000000000 +0000
@@ -87,4 +87,5 @@
 "ire65",  "towgs84=482.530,-130.596,564.557,-1.042,-0.214,-0.631,8.15",  "mod_airy",  "Ireland 1965",
 
+"airy",   "towgs84=446.448,-125.157,542.060,0.1502,0.2470,0.8421,-20.4894",  "airy",  "Airy 1830",