IREX Question

[QF2]

No, TSO-C129 is fine for NVFR, an alternate is not required.

Refer to the table in GEN 1.5 para 2.1. It shows that for NVFR, 1 system is required, and the specified system types are ADF, VOR or GPS. The condition is to refer to Note 3.

Note3: In this table GPS refers to GNSS equipment certified TSO-C129, C129a, C145a, C146a or equivalent as determined by CASA.

Also check ENR 1.1 para 73.3.3 which basically says that NVFR requires an alternate within one hour unless the destination is served by one radio naviagation aid (NDB/VOR) and the aircraft is fitted with the appropriate radio navigation system capable or using the aid, or the aircraft is fitted with an approved GNSS receiver, and the pilot and aircraft meet the requirements of GEN 1.5 Section 8.

So then checking GEN 1.5 para 8.5.4.2 it basically says that the GNSS receiver must be certified to meet TSO-C129, C129a, C145, C145a, C146, C146a or equivalent approved by CASA. This is followed by a table that shows this also.

Read the references in full if you don't trust my summary, you'll need to know these bits if you're doing IREX anyway.

Hopefully this clears things up once and for all!