Tso Gps 145/146

[downwind]

Quick question,

In the AIP it states that for a IFR destination that for a CHTR/RPt the dest is served by a radio navaid, for which a instrument app has been prescribed and the a/c is fitted with 2 sep and indep radio nav systems, quick q can the 2 sep and indep radio navs be 2 X GPS IFR tso 129/145/146 receivers in the a/c???? which serves an airport that doesn't have a ground based navs ie NDB/VOR/ILS. is it ok to use this combo for a non aid airport???

[omnidirectional wind]

only two tso c-145a or 146a receivers would satisfy the alternate requirements. ts0 c -129 receivers cannot satisfy any alternate requirements.

you must also have a valid prediction of approach FDE at the destination and alternate (if an alternate was required due to lighting or weather).

see aip gen 1.5 para 8.5.5.4 in the table, the row that has RNAV(GNSS) Non-precision approach in the left hand column, notes 3,4 in the middle column (page 16).