When the aircraft uses a non-WAAS GPS (TSO-C129/C196), the following rules apply:
- Users of these GPS systems may file flight plans based on GPS-based IAP at either the destination or alternate airport but not at both.
- At the alternate, they may plan for the LNAV or circling MDAs, LNAV/VNAV if equipped with baro-VNAV or RNP 0.3 DA if specifically authorized.
- Always have an alternate means of navigation such as VOR.
 AIM 1-1-17 5(c)