Avionics historians: Is there a slide in replacement IFR Approach GPS/Com for the KLX-135A

[MarkH]

I was having a conversation about avionics with someone who wants to be able to shoot non-precision GPS approaches with a plane that currently has a KLX-135A. My opinion is, if doing any wiring, install something with WAAS, but he was thinking if a IFR GPS/Com can drop in (with the annunciator being the only wiring addition) that may be a good way to save money.

I am not familiar with Bendix-King GPSes from the 90s, are there any drop in replacements for that unit that can handle RNAV approaches?

 

[camorton]

You would also need an indicator (CDI). Not likely one was installed for a VFR-only GPS.

Just my oppinion but installing a non-waas GPS is a fools errand. The choices were limited and I'd be surprised if you could still get database updates for them.

C.

 

[JoeBradSEA]

Bendix King did not make a slide-in replacement for the KLX-135A. Also, it is barely supported by them as well.

For GPS/Com combo units, your options are limited to mostly Garmin. Currently, Garmin only produces the GNC 355 and GTN 635Xi GPS/Com units. There are/were other options from Garmin such as the GNC 300/XL and GNC-420/W but they are either no longer supported by Garmin or will be in the near future. As camorton indicated, I would not recommend installing a non-WAAS GPS.