Garmin GNS 530

[Two_dogs]

Garrya100 & SKKM,

TSO 129 GPS receivers can not be used to satisfy alternate requirements, even if you have 2.
You also need 2 independent aids and two independent receivers, or 1 aid and 2 same receivers


I think if you have;

TSO 129 + NDB or VOR = alternate req
TSO 129 x 2 = alternate req
TSO 146 + nothing else = alternate req
TSO 146 + NDB or VOR = no alternate req
TSO 146 x 2 = no alternate req

NDB + 2 x ADF = no alternate req
VOR + 2 x VOR receiver = no alternate req
NDB + VOR + 1 ADF + 1 VOR receiver = no alternate req

I have often wondered about the single ground aid and two receiver alternate requirements. It does not fit my personal minimums, I require an alternate in this scenario. Gee, I can't remember the last time an NDB or VOR went U/S.

I am quite happy however, to accept an RNAV approach with 2 conforming GPS.

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