Yes 9easy and the others are absolutely correct. Endeavor parents are S4 on mainline and ludicrously below buddy pass riders! Is there anything in the works to change this? You can access the entire standby code matrix in travelnet by picking a flight with many on the standby list, then clicking "airport standby list", then clicking on a code for one of the people on that list and it displays the whole thing. The date on that matrix is 2006 but seems like it has changed since then and definitely should soon!